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Instructor Notes: Aerospace Sheet Metal Design Copyright DASSAULT SYSTEMES 1 Copyright DASSAULT SYSTEMES Aerospace Sheet Metal Design CATIA V5 Training Foils Version 5 Release 19 January 2009 EDU_CAT_EN_ASL_FI_V5R19

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Page 1: Aerospace Sheet Metal Design - Freeyvonet.florent.free.fr/SERVEUR/COURS CATIA/CATIA... · Aerospace Sheet Metal Design CATIA V5 Training ... -Create and modify the design of a Hydro-formed

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Aerospace Sheet Metal Design

Copyright DASSAULT SYSTEMES 1

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Aerospace Sheet Metal Design

CATIA V5 TrainingFoils

Version 5 Release 19January 2009

EDU_CAT_EN_ASL_FI_V5R19

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Aerospace Sheet Metal Design

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About this courseObjectives of the courseUpon completion of this course you will be able to:- Manage Sheetmetal parameters- Create and modify the design of a Hydro-formed Sheetmetal Part- Generate and draw a flattened part- Create a Knowledge Expert Check using characteristic curves

Targeted audienceAerospace Designers

PrerequisitesStudents attending this course should have knowledge of Part Design, Assembly Design, and Wireframe & Surface Design

8 hrs

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Aerospace Sheet Metal Design

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Table of Contents (1/5)

Introduction to Aerospace Sheet Metal Design 8ASL Workbench Presentation 9

Master Exercise Presentation 13Master Exercise Step 1: Setting an Environment 14ASL Parameters 15

Loading Data 16Modifying Default Thickness and Bend Radius 18Modifying Default Bend Allowance 19Choosing Joggle Compensations 20Runout Formulas 21Master Exercise Step 2: Setting Default Part Parameters 23

Creating the Web 24Creating the Web 25Creating a Surfacic Web 27Modifying the Web 29Master Exercise Step 3: Creating the Web 30

Creating a Surfacic Flange 31Creating a Surfacic Flange 32

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Table of Contents (2/5)

Intersecting Surfacic Flanges on a Web 39Modifying a Surfacic Flange 40Master Exercise Step 4: Creating Surfacic Flanges 41

Creating a Corner Relief 42Creating a Corner Relief 43Modifying a Corner Relief 45Create Corner or Chamfer on Sharp Edges 46Master Exercise Step 5: Creating a Corner Relief 47

Creating a Joggle 48Creating a Joggle by Depth 49Creating a Joggle with an Input Surface 52Joggle Run out Formulas 54Modifying a Joggle 55Master Exercise Step 6: Creating a Joggle 56

Creating Flanges other than Surfacic Flanges 57Creating a Flange 58Create a Hem 59Create a Tear Drop 60

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Table of Contents (3/5)

Create a User Flange 61Modifying Flanges other than Surfacic Flanges 62

Creating a Cutout 63Creating a Cutout 64Modifying a Cutout 69Master Exercise Step 7: Creating a Cutout 70

Creating Stamps 71Creating a Flanged Hole 72Creating a Bead 73Creating a Circular Stamp 74Creating a Surface Stamp 75Creating a Flanged Cutout 76Creating a Stiffening Rib 77Creating a Curve Stamp 78Creating a User Stamps 79Modifying a Stamp 81Master Exercise Step 8: Creating a Flanged Hole and Bead 82

Creating a Hole 83

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Table of Contents (4/5)

Creating a Hole 84

Creating a Circular Cutout 88Creating a Circular Cutout 89Modifying a Circular Cutout 90Point or Curve Mapping 91Duplicate ASL Feature by applying a Pattern 92Master Exercise Step 9: Creating Circular Cutouts 93

Modifying a Feature 94Modifying a Feature 95Master Exercise Step 10: Modifying Features 98

Generating Folded and Flattened parts 99Folding / Unfolding the Part 100Using Multi-View 101Flat Solid linked to ASL Designed Part 102Master Exercise Step 11: Flattening the Part 103

Drawing Generation 104Drawing Generation 105Master Exercise Step 12: Drawing Generation 106

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Table of Contents (5/5)

Administration 107About Standards 108Setting Standard Parameters 109Setting Parameters for a Designer 110Customizing Standards Files to define Design Tables 111How to use Knowledge Expert 112

Additional Exercises 114Additional Exercise: Aerostructure 115Additional Exercise: Bracket 116Additional Exercise: Fighter Web Structure 117Additional Exercise: Rib 118Additional Exercise: Fairing Linking 119

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Introduction to Aerospace Sheet Metal Design

In this lesson you will learn about main features of Aerospace Sheet Metal Design workbench

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ASL Workbench Presentation (1/4)

Accessing the Workbench

Modifying CATIA environmentTools > Option > General� General� User Interface Style: CATIA P3

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ASL Workbench Presentation (2/4)

ASL features

Product tree

User Interface : General Presentation

ASL tools

Sketcher

Standard tools

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User Interface : ASL Tools

ASL Workbench Presentation (3/4)

Sheet Metal Default Parameters

Creating a Web

Creating a Surfacic Flange

Creating a Joggle

Unfolding / Folding the Part

Creating a Cut Out

Creating Stamps

Creating a Corner Relief

Creating a Hole

Creating a Flange

Point and Curve Mapping

Creating Corner and Chamfer

Creating a Pattern

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User Interface : ASL Tools

ASL Workbench Presentation (4/4)

Creating Stamps

Creating a Flange

Creating Pattern

Creating Corner and Chamfer

User FlangeFlange

Tear Drop

Hem

User StampFlanged

Hole

Curve StampStiffening Rib

Surface Stamp

Bead

Circular StampFlanged Cutout

Chamfer

Corner

User Pattern

Circular Pattern

RectangularPattern

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Master Exercise: Fighter AirframeExercise Presentation

50 min

In this step you will see :Design Intent: Fighter AirframeDesign Process: Fighter Airframe

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Master Exercise: Fighter Airframe Step 1: Setting an Environment

5 min

In this step we will set the CATIA environment

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ASL ParametersIn this lesson you will learn the setting parameters of an Aerospace Sheet Metal part

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Loading Data (1/2)

You can link parameters table files such as Extruded Hole Std or Bead Std for example as well as Joggle Compensation Methods to the Sheet Standard . xls file, just by indicating their name in the corresponding column.

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Loading Data (2/2)

Prior to utilizing such design table you should declare correct path where parameters tables are storedTools > Options > General > DocumentOther Folders / Configure ,orDL Name Allowed and Configure

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Modifying Default Thickness and Bend Radius

Click the Sheet Metal Parameters icon

Before starting to generate the part it is necessary to set default parameters such as Thickness and Bend Radius

Set Thickness and Bend Radius entering directly the values

Another way to set parameters is to open a Sheet Standards Files and accessing to the design table by the corresponding button

Select the Parameters Tab

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Modifying Default Bend Allowance

Select Bend Allowance tab

A formula is associated to the K factor and could be deactivated (Right Button Formula Deactivate)

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Choosing Joggle Compensations

Select Joggle Compensation method

Select Run out calculation method and coefficient

Select one run out formula out of 3 types

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Runout Formulas (1/2)

Default Formula :

Runout = Coeff * Depth

No Formula : erases

formulas on ALL part joggles

Design Table Formula :

choose a path to an .xls or .txt file

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Runout Formulas (2/2)

There is a particular syntax to use in order to create the design table.

As you can see on the picture, it can be described as follows :

The A Column (Formula Names) contains String Parameters

The B and C Columns contain Real Parameters (no unit)

The D Column contains Length Parameters (unit)

The E Column (Formula Bodies) uses previous Real & Length parameters (a1, a2, a3) for its own

formulas (as you can see, not all existing parameters must be used in the formula)

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Master Exercise: Fighter Airframe Step 2: Setting default part parameters

5 min

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Creating the WebIn this lesson you will learn creating the web.

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Creating the Web (1/2)

A. Click the Web icon

B. Select a plane or a close sketch which support the web

C. Select curves, planes or surfaces to define the limits of the web.

The limiting elements must intersect.

The web is the fix feature when we unfold the part

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Creating the Web (2/2)

D. As soon as selected elements make a closed area, a preview of web is suggested

The contour must be selected in the logic sequence.

If necessary Select Web Material Direction.

Reverse by clicking on the red arrow which is perpendicular to the web support.

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Creating a Surfacic Web (1/2)

A. Click the Web icon

B. Select a surface that can be developed, even a curved one, which supports the web

C. Select a reference wire and an invariant point as references for the unfolding of the web.

The reference wire must be located on one of the limits and the invariant point on the reference wire.

Select curves, planes or surfaces to define the limits of the web.The limiting elements must intersect.

As soon as selected elements make a closed area, a preview of web is suggestedThe contour must be selected in the logic sequence.

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Creating a Surfacic Web (2/2)

D. If necessary Select Web Material Direction.

Reverse by clicking on the red arrow which is perpendicular to the web support

Use this corner as Invariant Point

Extrude.4 Folded View

Project.1 Folded View

Extrude.3 Folded View

Extrude.2 Folded View

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Modifying the Web

1. Double-click the Web feature in the tree

2. Change Support Geometry or Boundary Elements

3. Select a Boundary Element it becomes then a Reference Element and you can then:

Add AfterAdd BeforeReplaceRemoveInsert

You can also Remove All elements Multiple Sel. option is available when Add After or Add Before are activated

Modify the web by accessing the Web Definition dialog box

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Master Exercise: Fighter Airframe Step 3: Creating the Web

2 min

In this step we create the airframe web

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Creating a Surfacic FlangeIn this lesson you will learn to create a Surfacic Flange.

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Creating a Surfacic Flange (1/7)

A. Click the Surfacic Flange icon

B. Click the Base Feature tab

C. Select the web or a flange as Base Feature

Selecting the Base Feature

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AA. Exact : the support is the surface geometry selected

B. Approximation : the selected surface is approximated into a ruled surface and the maximum deviation can be computed according to an approximation length

C. Angle : the surface of the flange is defined by a curve an angle and a support length

Selecting the Support : Support Type

Creating a Surfacic Flange (2/7)

Select the support type

Click the Support tab

Support type :

BC

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Creating a Surfacic Flange (3/7)

Select Directions (Reverse by clicking on

the corresponding red arrows) :

A. Flange Direction

B. Flange Material direction

C. Flange Base Feature Direction

Flange Support

Flange Base Feature

Selecting the Support : Flange Directions

AB

C

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Creating a Surfacic Flange (4/7)

Select the type flange length

A. Length From OML : length between the curve defining the top of the flange and the Outer Mold Line (OML)

B. Element FD (Folded) : Boundary element is a surface or a plane which intersects the flange surface or a wire projected on the flange surface

C. Element FP (Flattened) : Boundary element is a surface or a plane which intersects the flattened flange surface or a wire projected on the flattened flange surface

Define the Edge Of Part (EOP)

A

B C

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Creating a Surfacic Flange (5/7)

SIDE TYPES

Standard: they are automatically defined at the web limit and the perpendicular plans are kept (the user doesn’t have to define them)

None: no side computed (only the EOP is able to define them)

Element FD: they can be defined by a geometrical element FD (Curve or surface)

Element FP: they can be defined by a geometrical element FP (Curve or surface)

CORNER TYPES (angle defined between the EOP and the sides)

Corner: between the side and the EOP (defined with a radius value)

None: No corner computed (only the EOP is able to define the contour of the flange)

Two texts indicate Flange Sides(Side & corner 1

Side & Corner 2)

Defining Sides and Corners :

Select each Corner type

Click the Sides and Corners tabSelect each Side type

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Creating a Surfacic Flange (6/7)

Manufacturing process

Hydro pressed or Break Formed

(information only for the current CATIA release)

General K_Factor can be locally altered for a specific Surfacic Flange

Process tab: Manufacturing Process and specific K_ Factor

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Creating a Surfacic Flange (7/7)

Apply or not Joggle Compensation method selected in Sheetmetal Parameters definition

Choose Flange Sides Compensation method

Compensation tab: Joggle and Flange Sides Compensations

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Intersecting Surfacic Flanges on a Web

It is possible to intersect two surfacic flanges on a web. This means that you can choose as a support a web with an existing surfacic flange that will go through the new surfacic flange.The intersecting flanges are automatically detected, and the geometry of the first flange is relimited to enable the creation of the second flange; the unfolded view is computed accordingly. You can then remove the sharp vertex in the corner by creating a corner relief or a cutout at the intersection of the surfacic flanges.

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Aerospace Sheet Metal Design

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Modifying a Surfacic Flange

A. Double Click the Flange in the part or in the tree and the Flange Definition dialog box is displayed

B. Modify desired parameters and click OK to validate

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Aerospace Sheet Metal Design

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Master Exercise: Fighter Airframe Step 4: Creating Surfacic Flanges

10 min

In this step we create 6 flanges using different definition types

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Aerospace Sheet Metal Design

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Creating a Corner ReliefIn this lesson you will learn to create a Corner Relief

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Aerospace Sheet Metal Design

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C

D

Creating a Corner Relief (1/2)

B. Click the Corner Relief icon

C. Select both involved flanges

A. Click the Fold/Unfold icon to flatten the part

D. Select the sketch of the corner relief profile or access to standard contour catalog or enter the Sketcher workbench to create the profile

Setting corner relief parametersPart must be flattened

Support Redefinition option is used when user wants flanges sides to be impacted (lengthened) by corner relief profile

A B

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Aerospace Sheet Metal Design

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Creating a Corner Relief (2/2)

E. The red arrow determines the material side to be removed. Change direction if necessary

F. Update the part if necessary

G. Fold back the part

Setting corner relief parameters

F G

Flanges selected

Web

Corner relief profile

E

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Aerospace Sheet Metal Design

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Modifying a Corner Relief

A. Double Click the Corner Relief in the tree when the part is flattened and the Corner Relief Definition dialog box is displayed

B. Modify desired parameters and click OK to validate

B

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Aerospace Sheet Metal Design

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Create Corner or Chamfer on Sharp Edges

Select Corner or Chamfer icon

Key Radius value

Select Edges to be worked or Select all

In case of chamfer definition you will first have to choose the type Length1/Length2 or Length1/Angle

1 2

3

2

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Aerospace Sheet Metal Design

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Master Exercise: Fighter Airframe Step 5: Creating a Corner Relief

10 min

In this step we will create a corner relief

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Aerospace Sheet Metal Design

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Creating a JoggleIn this lesson you will learn about creating a Joggle

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Aerospace Sheet Metal Design

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Creating a Joggle by Depth (1/3)

Click the Joggle icon

A. Select the flange as joggle support

B. Select the joggle plane

The vector normal to the joggle plane determines the side on which the joggle is to be created (run out)

Result

C. Select the role of the plane

Using a flange

Web

Joggle direction

Joggle plane

Flange

The vector normal to the flange support determines the depth direction

AB C

D

D. Select Depth Type

The selected plane either start the joggle or end it.

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Aerospace Sheet Metal Design

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Creating a Joggle by Depth (2/3)

D. Depth : offset at the support surface

E. Run out : length between the original surface of the flange and the new surface.If desired you can deactivate formula

F. Clearance : offset between the Joggle Plane and the end radius

G. Start Radius : radius linked with the original surface

H. End Radius : radius linked with the new surface

Setting joggle parameters

D

E

F

GH

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Aerospace Sheet Metal Design

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Creating a Joggle by Depth (3/3)

A. Click the Joggle icon

B. Select the Web as joggle support

C. Select the joggle plane and the role of the plane

Result

D. Select Offset Type as Depth

Using a web

A

WebC

B

C

D

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Aerospace Sheet Metal Design

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Creating a Joggle with an Input Surface (1/2)

A. Click the Joggle icon

B. Select the flange as joggle support

C. Select the joggle plane and the role of the plane

D. Select Surface Type

Using an offset surface

Joggle plane

FlangeJoggle direction

Offset Surface

A

B

C

D

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Aerospace Sheet Metal Design

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Creating a Joggle with an Input Surface (2/2)

The parameters work the same way as with a depth except for the offset surface which obviously replaces the depth parameter. We get this result at the end :

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Aerospace Sheet Metal Design

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Joggle Run out Formulas

Default: Coeff *Depth None : no formulaDesign Table : chosen Formula of the table

Design Table : Resulting run out

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Aerospace Sheet Metal Design

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Modifying a Joggle

A. Double Click the Joggle in the tree and the Joggle Definition dialog box is displayed

B. Modify desired parameters and click OK to validate

B

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Aerospace Sheet Metal Design

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Master Exercise: Fighter Airframe Step 6: Creating a Joggle

2 min

In this step you will create a joggle on a surfacic flange

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Aerospace Sheet Metal Design

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Creating Flanges other than Surfacic Flanges

In this lesson you will learn to create Flanges using various options

Click the pull down arrow and select the desired icon

Creating a Flange

User Flange

Tear Drop

Hem

Flange

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Aerospace Sheet Metal Design

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Creating a Flange

Click Flange iconSelect Spine

Choose Basic or Relimited option, If Relimited you will then select two relimiting elements

Key Flange parameters: Radius, Length, AngleSelect OK

12

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45

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Aerospace Sheet Metal Design

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Create a Hem

Click Hem icon

Select Spine

Select Basic or Relimited option, If Relimited you will then select two relimiting elements

Key Flange parameters: Radius, LengthSelect OK

1

2

3

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Aerospace Sheet Metal Design

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Create a Tear Drop

Click Tear Drop icon

Select Spine

Choose Basic or Relimited option, if youselect Relimited option then you need to select two relimiting elements

Key Flange parameters: Radius, LengthSelect OK

1

2

3

45

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Aerospace Sheet Metal Design

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Create a User Flange

Click User Flange iconSelect Spine

Choose Basic or Relimited option, if youselect Relimited option then you need to select two relimiting elements

Select Profile

Select OK

12

3

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5

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Aerospace Sheet Metal Design

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Modifying Flanges other than Surfacic Flanges

1. Double Click the Flange in the specification tree or on the geometry itself and the appropriate Flange Definition dialog box is displayed

2. Modify desired parameters and/or specification elements and then click OK to validate Step 1

Step 2

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Aerospace Sheet Metal Design

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Creating a CutoutIn this lesson you will learn to create a Cutout

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Aerospace Sheet Metal Design

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Creating a Cutout (1/5)

Click the Cutout icon to display the Cutout Definition dialog box

Create a sketch on the web surface or on a flange surface

Define a closed contour

Exit the sketcher

Creating a profile as Cutout profile

1

2

3

4

2

3

4

1

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Aerospace Sheet Metal Design

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Creating a Cutout (2/5)

Three End Limit Types are available :

Dimension : depth is define by a specific value

Up to next : the limit is the first face the application detects while extruding the profile

Up to last : the application will limit the cutout onto the last possible face encountered by the extrusion

Select the profile previously created with the sketcher

Determine the cutout side : click on the Reverse Direction button or on the red arrow

Select the material part to keep : click on the Reverse Side button or on the orange arrow

Select Sheetmetal standard or Sheetmetal pocket option. Sheet metal standard for sheet passing through cutout. Sheet metal pocket for depth smaller than sheet thickness

Lying on skin allows selection of a 3D curve as profile definition

Using a profile : Setting cutout Parameters

6

7

8

9

10

5

8

6

109

8

7

5

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Select the Power Copy Family Object or User Feature Family Object

Creating a Cutout (3/5)

Select the Open Catalogue icon

Click the Cutout icon to display the Cutout Definition dialog box

Inserting a profile instance from a cataloguePrior to inserting profile instance from catalogue, you should set up catalogue access through Tools / Options / Mechanical Design / Aerospace Sheet Metal

1

2

3

1

3

2

3

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Aerospace Sheet Metal Design

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Creating a Cutout (4/5)

Select the web plane as Ref_Plane input, a point as Ref_Point and a line as Ref_Axis for orientation purpose

Select Parameters

Click OK and Close all windows related to contour instantiation

Double click on Slot_contour

Select Design table icon and/or modify Angle value

Select 8th row

Inserting a profile instance from a catalogue (cont’d)

78

9

5

6

7

8

9

4

4

5

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Aerospace Sheet Metal Design

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Creating a Cutout (5/5)

Check that orange arrow is pointed inside the profile and click OK

Inserting a profile instance from a catalogue (cont’d)

10

10

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Aerospace Sheet Metal Design

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Modifying a Cutout

A. Double Click the Cutout on the part or in the tree and the Cutout Definition dialog box is displayed.

B. Modify desired parameters and click OK to validate.

B

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Aerospace Sheet Metal Design

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Master Exercise: Fighter Airframe Step 7: Creating a Cutout

5 min

In this step we create a cut out on the web

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Aerospace Sheet Metal Design

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Creating StampsIn this lesson you will learn to create and modify Stamps

Click the pull down arrow and select the desired icon

Creating Stamps

User Stamp

Curve Stamp

Stiffening Rib

Flanged Cutout

Surface Stamp

Circular Stamp

Bead

Flanged Hole

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Aerospace Sheet Metal Design

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Creating a Flanged Hole

Click the Flanged Hole icon

Select a point previously created

Select the surface where you want to place the hole

Change parameters, such as radius, angle, flat pattern by entering values or using Standards Files

Select Design table icon to select parameters (example to follow)

Change the hole direction by clicking on the orange arrow and select OK

2

1

5

4

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Creating a Bead

Click the Bead icon

Select the wire the bead will rely on

Web Surface

Modify Bead direction by clicking the orange arrow if needed and click OK

1

5

3

2

Change parameters by entering values or using Standard Files

Select Design table icon to select parameters

4

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Creating a Circular Stamp

Click the Circular stamp iconSelect a point previously created

Select the surface where you want to place the hole

Change parameters by entering values or using Standards Files

Select Design table icon to select parameters

Change the stamp direction by clicking on the orange arrow if needed and select OK

1

5

4

3

2

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Creating a Surface Stamp

Click the Surface stamp icon

Select a closed contour previously created

Change parameters by entering values or using Standards Files

Select Design table icon to select parameters

Change the stamp direction by clicking on the orange arrow if needed and select OK

1

2

3

4

Example with Opening Edge

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Creating a Flanged Cutout

Click the Flanged Cutout icon

Select a closed contour previously created

Change parameters by entering values or using Standards Files

Select Design table icon to select parameters Change the stamp direction

by clicking on the orange arrow if needed and select OK

1

4

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2

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Aerospace Sheet Metal Design

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Creating a Stiffening Rib

Click the Stiffening Rib icon Select the external face of a straight bend

Change parameters by entering values or using Standards Files

Select Design table icon to select parameters

1 2

3

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Creating a Curve Stamp

Click the Curve stamp icon

Select a wire previously created

Change parameters by entering values or using Standards Files

Select Design table icon to select parameters

Change the stamp direction by clicking on the orange arrow if needed and select OK

Example of Half Pierce 5

3

2

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Creating a User Stamps (1/2)

Import the Punch from a catalog into a specific Body

Create a User StampBefore actually creating the user stamp, you should first define or import the punch and eventually the die that will later be used for actual stamping

1

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Creating a User Stamps (2/2)

Select User Stamp icon

Select outer face of bend you want to punch

Select appropriate icon:

With Die or With opening

Select Punch Body and Position on context option

2

4

5

3

Punch Body

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Modifying a Stamp

A. Double Click the stamp to be modified

B. Modify desired parameters and click Preview if you wish

C. Click OK to validate

C B

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Master Exercise: Fighter Airframe Step 8: Creating a Flanged Hole and Bead

2 min

In this step we create a flanged hole on the web

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Creating a HoleIn this lesson you will learn to create a Hole

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Creating a Hole (1/4)

B. Select a point on the web

A. Click Hole tool

E. Specify the values as needed

G. Position the hole on the web

D. Choose a bottom limit for the hole

H. Choose a bottom type for the hole

F. Specify the direction of the hole

BA

C. Select the web

C

Blind Up To Next Up To Last

Up To Plane Up To Surface

Flat bottom V bottom

D

E

F

G

H

D

H

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Creating a Hole (2/4)I. Select the type of hole

Counter boredSimple

Tapered

Cou

nter

sunk

Counter drilled

J. Select the Bottom Type of a threaded hole

J

I

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Creating a Hole (3/4)

Hole Diameter, Pitch, Right or Left-Threaded, Add or Remove Standards

K. Specify other Thread Parameters

You can choose a Left or Right-Threaded hole by selecting one of these two options.

By default, the Pitch is automatically calculated in accordance with the Thread Diameter and the Standard. You can modify it to get a non standard thread.

To add or remove one or several standards, you can use these two buttons.

By default, the Hole Diameter is automatically calculated in accordance with the Thread Diameter and the Standard. You can modify it to get a non-standard thread .

K

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Creating a Hole (4/4)

L. Specify Deformation

You can create a cylindrical hole in folded and unfolded view by clicking on No Deformation option in the Deformation tab.

L

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Creating a Circular CutoutIn this lesson you will learn to create a Circular Cutout

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Creating a Circular Cutout

A. Create a point on the web

B. Select Circular Cutout icon

D. Select web as support

F. Select type of hole

C. Select the point previously created

G. Enter Diameter value and click OK

E. Select additional points if necessary

A

B

E

C

G

F

D

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Modifying a Circular Cutout

A. Double Click the Circular Cutout on the part or in the tree and the Circular Cutout Definition dialog box is displayed

B. Modify desired parameters and click OK to validate

C. Click Preview if you wish

B C

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Point or Curve Mapping

Select Point or Curve mapping icon

Select the Context ASL Feature (the one from which transformation is deduced)

Select Elements to be mapped

Mapping can be done from 3D to 2D and conversely

1

2

3

3

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Rectangular, Circular or User defined Pattern

Duplicate ASL Feature by applying a Pattern

Select appropriate Pattern icon

Select Feature to be duplicated

Fill in all fields necessary for Pattern definition and select OK

1

2

3

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Master Exercise: Fighter Airframe Step 9: Creating Circular Cutouts

2 min

In this step we create circular cutouts on the web

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Modifying a FeatureIn this lesson you will learn to modify a feature

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Modifying a Feature (1/3)

A. Double Click the Feature to be modified on the part or in the tree and the Feature Definition dialog box is displayed (ex. : the first flange definition)

B. Modify desired parameters and click OK to validate ( here we suppress the first corner of the flange).

Update if necessary

Accessing feature definition window

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Modifying a Feature (2/3)

Two ways:

A. Double-click on the sketch in the tree

B. Edit the feature definition window and click the Sketcher button

2. Modify the closed contour

3. Exit the sketcher and update if necessary

Modifying Sketcher Support

A

B

1. Edit the sketch linked to the feature to be modified (ex. : the first Cutout definition)

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A. Change to WFS workbench

Modifying a Feature (3/3)

B. Modify a support surface. Here we modify the offset of a flange support surface

C. Change to ASL workbench and update

A

BC

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Master Exercise: Fighter Airframe Step 10: Modifying Features

5 min

In this step we modify a flange surface support

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Generating Folded and Flattened partsIn this lesson you will learn to Fold / Unfold a part.

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Folding / Unfolding the Part

1. Select the Unfold icon to flatten the part according to the web

2. Select the Unfold icon again and the part is folded back

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Using Multi-View

1. Click the Multi-View icon to unfold the part in a second window

2. Select Window > Tile -Horizontally menu item to display both windows

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Flat Solid linked to ASL Designed Part

1. Copy the Part Body out of the ASL designed part

2. Paste As Result With Link Flat mode into another part or in another Body of the same part

You obtain a Solid (linked to initial ASL part) where you can add on Excess and Tabs

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Master Exercise: Fighter Airframe Step 11: Flattening the Part

2 min

In this step you will flatten the part and use Multi-view

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Drawing GenerationIn this lesson you will learn to generate a drawing of an ASL part.

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Change to Drafting Workbench and select an empty sheet

Drawing Generation

1

Select the Unfolded View icon

2

Select the web on the part

3Select a place on the sheet where to locate the flattened view

4

NB : the characteristic curves are generated in the drawing

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Master Exercise: Fighter Airframe Step 12: Drawing Generation

2 min

In this step we draw the flatten view of the part

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AdministrationIn this lesson you will learn Administration Tasks.

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About Standards

Standards are embedded in the sheet metal partStandards are administrator-definedA standard file is available by defaultEditing the standard fileThe standard file can be edited using an interactive editor. This editor provides an easy-to-use graphic interface to let you customize the parameters included in the standard file.

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Setting Standard Parameters

Invisible curves Visible curves

Administrators can for instance :

Customize the graphic properties of characteristic curves in both 3D (Aerospace Sheet metal Design workbench) and 2D views (Generative Drafting workbench).

Manage the visibility of all characteristic curves (BTL, IML, OML and 2nd OML) in folded and unfolded 2D views through standards.

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Setting Parameters for a Designer

The designer can also Manage the visibility of all characteristic curves (BTL, IML, OML and 2nd OML) in folded and unfolded 2D views through standards. in Tools/Options/Mechanical Design/Aerospace Sheet Metal Design with the display tab)

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Customizing Standards Files to define Design Tables

In the Sheet metal Parameters Window, you can choose the sheet standard files and then select the values you want in the given design table.

In the example below, you can see that the thickness and default bend radius are driven by design tables, hence they are grayed out (i.e. you can’t modify the values)

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How to use Knowledge Expert

In order to perform a clearance check, you can use the characteristic curves like IML and OML in Check formulas, in the Knowledge Expert Workbench

Thus you can see if the security clearance is verified or not

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To Sum Up

In this course you have learned how to:Manage sheet metal parametersCreate and modify the design of an Hydro formed Sheet Metal Part by defining its internal features:

WebSurfacic FlangesJogglesDifferent kinds of flangesCorner RelievesCutoutsDifferent kinds of StampsHolesPoints and Curves MappingCorners and ChamfersPatterns

Generate a flattened partDraw a flattened part Fulfill some administration tasksCreate a Knowledge Expert Check using characteristic curves

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Additional ExercisesYou will perform the following additional exercises to reinforce the knowledge gained in this course:

Additional Exercise: AerostructureAdditional Exercise: BracketAdditional Exercise: Fighter Web StructureAdditional Exercise: RibAdditional Exercise: Fairing Linking

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Additional ExerciseAerostructure

30 min

Design of a Sheet metal Aerostructure to demonstrate ASL functionalities

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Additional ExerciseBracket

15 min

Design of a Sheet metal Bracket to demonstrate ASL functionalities.

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Additional ExerciseFighter Web Structure

20 min

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Additional ExerciseRib

20 min

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Additional ExerciseFairing Linking

20 min