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MSC Software Confidential

2011 Product Portfolio

MSC.Software Taiwan

陳俊昌



新世代的CAE觀念與技術

MSC的策略經由整合性的CAE作業系統

提昇企業的設計生產力

1980 2000 20201960

改進精確度, 品質, 效率與生產力

Simulation

Productivity

+ L

imite

d In

tegra

tion

+

Pro

duct/C

om

ple

xity

Point Tools

Pro

du

cti

vit

y

Path

Forward

Mu

lti-Dis

cip

line

En

terp

rise

Inte

gra

ted

MD

Na

stra

n

Sim

En

terp

rise



MSC.Software StrategyDeliver certainty by expanding the horizon of engineering

simulation with the broadest range of real world behaviorsMISSION Mission

Deliver certainty by

expanding the horizon of

engineering simulation with

the broadest range of real

world behaviors

Broadest Range of Real World Behavior

Thermal-Structural Coupling

OpenFSI

Magnetostatic-

Structural

Fluid-Structure

MBS + CFD + Fatigue + EE + Controls

Multiphysics Multidiscipline MMO & MDO

MBS – Nonlinear

Nonlinear Bushing

ValveSpring

+ Controls

MBS + Nonlinear Explicit



Agenda2011 Product Portfolio

• User Interface

• Patran

• SimXpert

• Solvers

• Adams /Adams View

• Marc / Mentat

• MD/MSC Nastran




• User Interface

• Patran

• SimXpert

• Solvers


• Marc / Mentat

• MD/MSC Nastran



Patran Releases in 2011

Patran 2011

1. Nastran Nonlinear and Composites

3. Single Solution for Durability2. Improved Productivity

5. CAD Support4. Improved Thermal



Patran 2010.2

• Coordinated with Nastran 2010 release

• DRA Merge – Solves Many MD Issues

• Rigid Body Support on Post Processing

• Support of Bolt option in SOL 400

• Support of NL STEP in SOL 400

• Support of Pardiso and MUMPS solvers in Marc

• Support of MDN Axi-symmetric Shells

• Support of MDN Solid-Shell

• Critical defect corrections in MSC Fatigue

• Critical defect corrections in Patran

7



DRA Merge • New Contact Results Visualization

• Multi – Step Analysis Results

• Rigid body motion

• Contact Status

• Increment 0 Glued Contact Status



Rigid Body Results Animation

• Existing Marc / SOL600 Capability: Rigid

Body Motion Preview

• Now Available for SOL 400

• Rigid Body Results Visualization

» Rigid body animation

» Rigid body confirmation



Animation of Rigid Surface –

Nastran DBALL

10



11

Automate PDB_C_CACHE_SIZE

Environment Variable that Defines Memory

Level where Patran Starts Swapping

• Helps overcome problems importing large

models

• Previous default was 784 MB

• acceptable for 32 bit model size limits

• too small for 64 bit capabilities

• “setenv PDB_C-CACHE_SIZE autoNN”

will use NN% of ram

• For Patran 2010.1.2 and 2010.2 this is

set to auto75 by default – thus use a

maximum of 75% of physical ram on

machine

• new default is auto75



Marc Preference Enhancement

• Support for MUMPS and PARDISO

Solvers

• Support for 2D Adaptive

Remeshing

• Local Adaptive Remeshing

• Global Adaptive Remeshing



Contact Body Order Control –

Alphanumeric Ordering

• Previously Contact Body ID Order

(Controlled Chronologically) Dictated

Default Master-Slave Relationship

• Now Order Shown in Contact Table Does

» Alpha-Numeric Order

» User Control Via Body Name



Patran 2011 Release Highlights

• Productivity Enhancements

• Analysis Manager Enhancements

• Windows 7 Interactive Job Support

• SuperModel Capabilities Into Core

• CAD Updates

• CATIA V5 R20 and Pro/E Wildfire 5

• Solver Support

• 3rd Party Results

• Abaqus Version 6.10 and ANSYS 12

• Sinda Preference Enhancements

• MSC Fatigue Upgrades

• Durability Icon Ribbon

• DTLIB Based –Spot, Seam Weld and



New MSC Fatigue 2011 Durability

Icon Ribbon9



Integration of nCode DTLib

Library

• Spot-Weld

• FKM Mean Stress Corrections

• Seam-Weld

• Volvo Method (force)

• Weld Root & Weld Throat Failure Predictions

• Seam-Weld

• Interpolation between “stiff” and “flexible” S/N Curves

• Benefits

• Improved accuracy

• State of the art fatigue technology

• Enhanced duty-cycle analysis




• User Interface

• Patran

• SimXpert

• Solvers


• Marc / Mentat

• MD/MSC Nastran



Discover the Benefits of SimXpert

Motion

Crash / Explicit

Systems

Structures

• Integrated Multidisciplinary Engineering

• Specialized workspaces for Structures, Motion, Systems & Controls, Explicit, Thermal simulation

• Increased efficiency with highly integrated pre/post processing functions

• One environment for end-to-end simulation

• Native CAD Interoperability

• No data translation, greater flexibility and control

• Catia V5 / ProEngineer / Unigraphics NX

• Design tree / parametric access

• Simulation process automation with templates

• Increased productivity , time savings

• Python record / replay

• Best practices publish and retrieve

Meshes Assemble Model

CombineLoadcase

Input

Deck Solver Output

Extract( Post pr ocessor)

Cross-

Section

Curve

Report

Creation

Report

SetupModel

CreateSupports

ApplyConstraints

ApplyLoads

ExportNastran

GRIDPairs

GenerateReport

SetupModel

CreateSupports

ApplyConstraints

ApplyLoads

ExportNastran

GRIDPairs

GenerateReport

Collect ModelPre

Process SolvePost

Process Report

Productivity

Gain

Productivity

Gain



Focus for SimXpert 2011

Focus on Usability & Quality

• Relentless focus on quality improvements

• Supported by 30+ customers through the beta program

• New Model Browser

• Performance Improvements

• Updated documentation with real world examples

CAD/Meshing Improvements

• New CAD Defeaturing

• Expanded CAD format support

• Version upgrades to supported existing CAD formats

• New Distene Mesher

Comprehensive Multidiscipline Support

• High fidelity, true multi-disciplinary simulation in a single application with integrated solvers

• Modeling & Simulation Solution for - Structures, Multibody, Thermal, Systems & Controls

• Support for latest solver capabilities including SOL 400



CAD „Defeaturing‟ Tools

• Description

– CAD Defeaturing• Identify/Delete

• Holes

• Fillets/Blends

• Chamfers

• Protrusions

• Logos

• Faults

• Notches

• Move/Offset

• Holes

• Surfaces

– Parasolid based

• Benefits

– Defeaturing functionalities with currently available virtual topology tools greatly enhances the CAD cleanup capabilities



SimXpert 2011 – CAD

“DeFeaturing” Tools



CAD Support Update

• Description

– Parasolid support added for

• Solidworks

• Autodesk Inventor

• UG NX

– CAD Version Upgrade

• CATIA V5 R20

• UG NX 7.0

• Pro/E Wildfire 5.0

• Benefits

– Import of geometry from your favorite CAD solution along with CAD defeauturing reduced time to prepare mesh ready geometry



New Distene Mesher

• Description

– New Distene Mesher enhances TET meshing robustness

– Built-in logic iteratively converge the solution thereby providing better quality TET mesh

• Benefits

– With defeaturing tool and robust DisteneMesher, meshing quality and usability have been improved considerably



ChamfersFillets

Small Holes

Fillets, Chamfers,

Small holes, etc., are removed with

“DeFeaturing” Tools

New Distene Mesher Example – TET MeshRobust

Assembly Meshing

Cut-out View

Mesh Quality

without

DeFeaturing

Mesh

Quality

after

DeFeaturing



New Model Browser

• Description– Model navigation

– Visibility status control

– Include file handling

– Show/Hide

– Synchronous highlighting between model browser and graphics port

– Sub-assembly management

– Entity count

• Benefits– Faster loading of entities in the model

browser

– Synchronous highlighting saves time allowing quick manipulation



Systems and Controls

Workspace Enhancements

• Description

– Improved access to commonly used runtime settings, improved online help

– Simplified transfer of linear state space matrix data from Motion model

– Spreadhseet tab to set, navigate, and filter all model data centrally

– HTML-browser enabled model/data export

– Library Component Manager (to create/maintain custom components/libraries)

• Benefits

– Introduced in SimXpert 2010, the Systems and Controls Workspace provides full capability of Easy5 within SimXpert.

– Additionally, leverage the power of process capture and re-use inherent with SimXperttemplates



Multi-Discipline Simulation: Landing

Gear

Actuation dynamics

Part geometries

FEA

S&C

CAD

Structuresparameters

Geometryparameters

Systems parameters

Deformation & stresses

Motion & forces

Pressures & temperatures

Mechanismsparameters

MBS

Joint locations

Part vibrations

Mass, Inertia& volumes

Plant load

Part loads



SimXpert - Customization/Templates

• SimXpert is the premiere CAE Customization Environment

• Template Builder Workspace (unique in industry)

• Out-of-box user-defined UI for custom processes

• Re-use of CAE operations (Actions)

• Templates that combine Actions with data and process flow

• Python scripting

• Access to rich/broad extension modules

• Bi-directionality with Excel

• PDF/Word/PowerPoint Report creation

• Easy syntax

• Rich Scripting access to all Workspaces

• SimXpert customization takes 20-30% the effort of Patran or ADAMS

• Multiple customers in production or scheduled for deployment this year with very sophisticated templates

CAD Model Input

Process Template

Process

Execution

Inputs

Process output(Meshed Model)



Comprehensive support for MD

Nastran SOL 400• Description

– Most comprehensive support for MD Nastran SOL 400

• Modeling of pre-stressed bolts, especially in a contact analysis

• Extended contact capabilities to support thermal contact in SOL400 Steady-State Heat Transfer

Transient Heat Transfer

• Coupled Thermal-Mechanical Analysis capabilities

• User-defined services to customize software by incorporating user-subroutines

• Benefits

– Innovate with latest functionalities in Natsran, Adams and Easy5 Solvers



Updated Documentation

• 73 total in-depth examples with input files

• 43 chapters have streaming “How To” videos

• Longer videos have bookmarks

• Activate video content within PDF

• 14 chapters have SimXpert tutorial slides

• Every chapter contains:

• One page summary

• Associated downloadable input file

• New Appendix: “Getting Started in SimXpert”

• Documentation available on SimCompanion

• Individual chapters being posted

• Option to download or view online

• http://simcompanion.mscsoftware.com/infocenter/index?page=content&id=DOC9471&cat=MSC_MD_NASTRAN_DOCUMENTATION_2010&actp=LIST

http://www.scribd.com/doc/33463596/MD-Nastran-Demonstration-Problems-2010

http://www.scribd.com/doc/33463596/MD-Nastran-Demonstration-Problems-2010

http://simcompanion.mscsoftware.com/infocenter/index?page=content&id=DOC9471&cat=MSC_MD_NASTRAN_DOCUMENTATION_2010&actp=LIST





Snapshot of Sample Demonstration

ProblemsCHAPTER 56 Hydroplaning

CHAPTER 57 Heating and Convection on a Plate

CHAPTER 58 Coupled Advection for Heat Exchanger

CHAPTER 59 Snap-through Of A Shallow, Cylindrical Roof Under A Point Load

CHAPTER 60 Deformable Baffle in a Duct using OpenFSI

CHAPTER 61 Convective Heat Transfer with nearby thermal contact

CHAPTER 62 Girkmann‟s problem using axisymmetric shell elements

CHAPTER 63 Beam Reinforced Shell Structures using Offsets

CHAPTER 64 Stent Analysis

CHAPTER 65 Convection Correlations on PCB

CHAPTER 66 Satellite in Orbit

CHAPTER 67 Thermal Contact on Surface, Edge and Solid Face

CHAPTER 68 Hemi-sphere and Plate Radiation

CHAPTER 69 Simulation of Fuel Tank Filling

CHAPTER 70 User Subroutines

CHAPTER 71 Impact of a Rigid On Composite Laminate using GENOA PFA Material

CHAPTER 72 Automated Bolt Modeling

http://www.scribd.com/doc/15665656/Hydroplaning-Simulation

http://www.scribd.com/doc/33264295/Heating-and-Convection-on-a-Plate

http://www.scribd.com/doc/33264315/Coupled-Advection-for-Heat-Exchanger

http://www.scribd.com/doc/32669117/Shallow-Cylindrical-Shell-Snap-through

http://www.scribd.com/doc/33255918/Deformable-Baffle-in-a-Duct-using-OpenFSI

http://www.scribd.com/doc/32721499/Steady-State-Heat-Transfer-due-to-Natural-Convection-between-Two-Noncontacting-Bodies

http://www.scribd.com/doc/32670040/Girkmann-Problem-using-Axisymmetric-Shell-Elements

http://www.scribd.com/doc/33420542/Beam-Reinforced-Shell-Structure-using-Offsets

http://www.scribd.com/doc/32670440/Stent-Analysis-with-Growing-Rigid-Body

http://www.scribd.com/doc/33264342/Convection-Correlations-for-PCB

http://www.scribd.com/doc/32863955/Satellite-in-Orbit

http://www.scribd.com/doc/32859215/Thermal-Contact-on-Surface-Edge-and-Solid-Face

http://www.scribd.com/doc/32855865/Collection-and-Primitives-Radiation

http://www.scribd.com/doc/33263971/Simulation-of-Fuel-Tank-Filling

http://www.scribd.com/doc/32801312/User-Defined-Subroutines

http://www.scribd.com/doc/32673232/Impact-of-a-Rigid-on-Composite-Laminate-using-GENOA-PFA-Material

http://www.scribd.com/doc/32915870/Automated-Bolt-Modeling



Summary

• Integrated multi-disciplinary engineering

– Specialized workspaces (Structures, Motion,

Systems, Explicit, etc …)

– End-to-end simulation

– Increased efficiency with highly integrated pre/post

processing functions

– Native CAD associativity

– Best practices capture with templates

• Innovate Faster and Simulate More with SimXpert 2011

– New CAD defeaturing tools

– Expanded CAD support

– New Distene Mesher

– New Model Browser

– Performance Improvements

– Multidiscipline Simulation Support

– Updated Documentation

MD Workspaces

Motion Structures

Systems Crash/Explicit




• User Interface

• Patran

• SimXpert

• Solvers


• Marc / Mentat

• MD/MSC Nastran



Adams 2011 Release Highlights

• CAD Interoperability

• Direct import and export of CAD formats

• SimManager Integration

• Archive and manage Adams models and simulation results in SimManager

• Run-Time Clearance

• Solve Time Clearance Analysis and a library of run time solver functions

• MFORCE Visualization

• Correct post-processing of MFORCE physical load vectors from MD Nastran or MNFLOAD

• C++ Solver Improvements

• Automotive Enhancements



CAD InteroperabilityEase of Use

• Description

• Direct import and export ofCAD geometry for:

• CATIA V4 and V5*

• Pro/E

• SolidWorks (import only)

• UG NX

• Inventor

• ACIS, VDA, etc.

• Benefits

• Eliminates the need to pass CAD geometry through neutral formats

• Reads CAD assemblies Into Adams and Creates Adams Parts

• Define an accurate geometric representation of the system



Run Time ClearanceRun Time Body States

• Description

• Adams/Solver & Adams/View

Functionality

• 3D States During Runtime

• Rich Set of Solver Functions

• Define Solver Expressions

• Kinematic States

• Solver Force Definitions

• Ease of Use and Flexibility

• For customers that want to do design

iterations based on distance

• Benefit

• Find Interference Quickly and Fix It

DCLEAR(id) Clearance distance

ACCCLEAR(id [,r]) Relative clearance acceleration

VCLEAR(id [,r]) Relative clearance velocity

IDCLEAR(id [,r]) Position of the I body clearance point

IVCLEAR(id [,k] [,r]) Velocity of the I body clearance point

IACCCLEAR(id [,k] [,r]) Acceleration of the I body clearance point

ICLEAR(id) Adams id of the I body used in the clearance calc

...



Adams C++ SolverPerformance and Robustness

New C++ Solver technology

• New Solver; NOT a copy of F77 solver

• Standard for Adams/View and horizontals

• Standard for SimXpert Motion workspace

• Standard for All Adams Applications in the next release*

Available only in C++ Solver

• New solvers: HHT, HASTIFF, UMFPACK

Solver Speed• Shared Memory Parallel

Parallel Performance• FLEX and native contact

• Exact Linear

• GCON

• Runtime Clearance

Benefits

• Faster delivery of new features

• New features drive speed and robustness

*F77 is the default solver for Adams/Car in 2011



FTire Interface EnhancementAccuracy and Performance

• Description

• Improved FTire – Adams/Tire interface for moving road simulations

• Road and wheel states are now calculated relative to the ground part

• Correct solutions for tire models with internal masses like FTire

• Benefit

• This enhancement results in improved accuracy in Tire Dynamics, especially for higher frequencies



FTire Modeling ImprovementEase of Use

• Description

• FTire input parameters exposed in the Adams Data Set

• Enable Design of Experiments (DOE) using FTire parameters

• Ftire will support soft soil and tire data fitting tool in future releases

DOE parameter definition in the tire property file

Adams/Tire uses a doe_arrayreferenced by design variables

“We have been quite successful using Adams/Carand FTire models to integrate with our testingrigs to generate accurate hybrid simulations.”

-- MTS, Test Equipment Manufacturer

...

$------------------------------------------------------------------DOE_PARAM

[DOE_PARAM]

p1 = 5.0

...

$-----------------------------------------------------------------------DATA

[FTIRE_DATA]

$...............................static and modal data for 1st infl. Pressure

first_deflection = p1*2 $ mm

...

Object Name : .MDI_Demo_Vehicle.TR_Front_Tires.til_wheel.doe_array

Object Type : Numbers ADAMS_Array

Parent Type : ac_tire

Adams ID : 902

Numbers : 5.0 (.MDI_Demo_Vehicle.TR_Front_Tires.til_wheel.doe_p01)

...

39



3rd Party Module Updates

FTire 2010-4http://www.cosin.eu

OpenCRG 1.02http://www.opencrg.org

MATLAB/Simulink R2010bhttp://www.mathworks.com

http://www.cosin.eu/

http://www.opencrg.org/

http://www.opencrg.org/



Road OffsetsEase of Use

. . .

WIDTH = 500.000

BANK = 0.00

$-------------------------------------------

-----OFFSET

[OFFSET]

X = 0.0

Y = 0.0

Z = 0.0

PSI = 0.0

THETA = 0.0

PHI = 0.0

$------------------------------------------

DATA_POINTS

[DATA_POINTS]

{ X Y Z WIDTH BANK MU_LEFT

MU_RIGHT }

12.50000E+04 . . .

. . . ..

• Description

– Allows to change the position and

orientation of the road

– Allows users to clearly define the road

geometry locations for both pre-

processing and analysis results.

• Benefit

– This has proven to be most useful in

positioning the vehicle model at a

certain point on the road profile.



3d Spline Road ImprovementsEase of Use and Performance

• Improved Road normal calculation

• Faster

• Uphill driving

• Banked roads

• More efficient contact point

calculation and road overlap

algorithm (open-closed)



Tilt Table AnalysisEase of Use

• Dynamic and Quasi-Static Mode

• Force Sensor triggered end

condition



Animation ObjectsSuperior Visualization

• Description

• Utility to add “landscaping” and moving “obstacles” to your animations:

• Trees, Buildings

• Moving traffic



Summary

• Leverage key enhancements today

• CAD Interoperability

• Run-time Clearance

• MFORCE Visualization

• SimManager Integration

• Speed and robustness improvements for C++ Solver

• Automotive enhancements focused on improved quality and ease of use

• Road offsets

• 3D Spline Road Improvements

• Support for FTire Roads

• Tilt-table Analysis

• Adams/Car Animation Objects

45




• User Interface

• Patran

• SimXpert

• Solvers


• Marc / Mentat

• Nastran



Marc 2011

• HPC

• Pardiso

• MUMPS

• CASI

• Contact

• Segment-to-Segment

• Directional Friction

• Multiphysics Glue

• Contact Messages

• Composites / Fracture

• SIFT

• Crack Propagation

• E-M

• Elements

• General

• Unified Large Strain

• Solid Shell Output

• Maximum Values Through Thickness

• Principal Values

• Remeshing 155-157

• Welding with DDM

• Unglue

• Ablation

• STS



Marc 2011 HPC

• Allow Pardiso Solver to support larger models using Out-of-Core

• Incorporate Newer Pardiso Solver

• Allow MUMPS Solver to support larger modes using i8 integers on 64 bit machines

• Incorporate Newer MUMPS solver

• Improve the CASI iterative solver for parallel processing

No Charge for Pardiso or

MUMPS Direct Solvers



Pardiso Out-of-Core Solver

0

500

1000

1500

2000

2500

3000

1 2 3 4 5 6 7 8 9

Time Vs Size of example

In-core IPARAM=0

IPARAM=1

OOC IPARAM=2

Size of example X 1,00,000 DOF0

500

1000

1500

2000

2500

3000

1 2 4

Time Vs Threads for test_09 example

In-core IPARAM =0

OOC IPARAM=2

Number of threadsSo

luti

on

tim

e in

Se

c

Out-of-Core Performs “like” In-Core



Power Your Analysis

DDM and Parallel Iterative Solver –

5 Million DOF

0.00

0.20

0.40

0.60

0.80

1.00

1.20

0 5 10 15 20

Normalized Time

Normalized



51

• Segment-to-segment with friction contact

– 2-D & 3-D for linear and quadratic solid elements

– 2-D & 3-D for linear and quadratic shell elements

– Improved Accuracy

– No Master-Slave Concept

– Supports finite sliding contact with Bilinear Coulomb and Bilinear Shear friction

– non-symmetric matrix is given to increase the speed of convergence, but requires more memory

– Analysis with different augmentation values

– Supports rigid deformable contact

node-to-segment

segment-to-segment

Full model

(small-plate)

(small-plate)

Contact Enhancements

Improved Accuracy

Ease of Use



Multiple Bodies Contacting at a

Point



Rubber Compression Test

• Two rings of rubber are compressed in a “rigid pipe”.

This should produce a homogeneous stress field.

• Current node-to-segment shows that we get a non-

homogeneous field.

• This results in penetrations and/or remeshing problems



Rubber Wiper with self contact

(segment-segment)

Including remeshing and friction



Node – to - Segment

Segment – to - Segment



Rubber CV Boot – Segment to

Segment



Directional Friction

• Two Friction Coefficients

• Displacement Based model like bi-linear model

• Orthotropic Friction Law

• Average Friction Coefficient

ft1

ft2



Directionally Dependent Friction

58

• Wire should be touching body

ApplicationsHoses

Offshore Oil

Fabric



5959

Directionally dependent friction



Crack Propagation

• Allow crack growth through elements

• Allow growth in shell structures to bifurcate cracks to grow through shell stiffeners

• User Defined Cracks via User Subroutine

• Support crack propagation with elastic-plastic materials

• Improve VCCT Capability

• Allow Crack Propagation to be based on Lorenzi Method



Bifurcating crack

Shells have Ribs and Spars



Cracking Using Remeshing



Solder Model

• Solder model with implicit time integration

for IC-Package

• Anand Model

Chip Model

Ball Grid Array

(BGA)



Anand Viscoplastic Solder Model

9/5/2011 64

Other Applications

Nuclear – High Temperature Creep



Anand Viscoplastic Solder Model

9/5/2011 65



Maximum / Minimum Values on

Post File

• Obtain the average value over the integration points of an element

• +20,000 maximum quantity over all the layers and layer number

• +30,000 minimum quantity over all the layers and layer number



Maximum – Minimum Values

Through Shell Layers e4x22c

9/5/2011 67



Layer ids

9/5/2011 68

Hint – Set number of

contours to number of

layers -1



Mentat 2011

• GUI

• CAD Import

• Tetrahedral Meshing

• Biased Seed Points

• Enhanced Select

• Enhanced Refine

• A to B by C

• Full Support of Marc 2011



Layout

Main Menu

Dynamic Menu

Dialog

Graphics Area

with Multiple

Windows

ToolbarsMenubar



(Un)dockable Windows



General CAD Import with Repair

73

CAD Import

Repair

Transform

Prepare

Export

Import

Import

MFD

Faceted Surfaces (New),

Finite Elements

NURBS Surfaces

Mentat



7

4

CAD Import and Meshing

Native CAD Import

3 clicks to mesh

Impossible in current Mentat

Parasolid Engine 4 minutes Model

to Mesh



General CAD Import with Repair

• Import: Import CAD model

• Rudimentary model fixing operations (merge duplicate points and edges, etc)

• Repair: Fix model topology

• Remove duplicate entities, stitch faces together, validate face orientations, etc

• Transform: De-feature the model (optional)

• Remove holes, delete fillets, join edges or faces, remove short edges and sliver faces, etc

• Prepare: Prepare model geometry for export

• Adjust complexity and accuracy of the model to meet requirements of the target format

• Requirements include: minimum feature size, edge-to-face accuracy, surface smoothness and complexity

• Export: Write a file in the appropriate format

75



Tetrahedral Mesher

• Newer Distene

Mesher

• Faster

9/5/2011 76



Assembly



FACE FLOOD and EDGE FLOOD

Selection

sharp angle



Refine Skin




• User Interface

• Patran

• SimXpert

• Solvers


• Marc / Mentat

• MD/MSC Nastran



MD/MSC Nastran 2011 Key Enhancements

• Performance enhancements

• Eignenvalue Extraction – ACMS

• Memory Usage – SMEM

• Solver Improvements – Math Kernel

• Thermal analysis

• Rotordynamics

• Advanced splining for aeroelasticity

• OpenMDOTM for Optimization

• Improved error messages



Automated Component Modal

Synthesis (ACMS)

• Introduced in 2001 to improve

performance of frequency

domain anlayses

• Continually enhanced

• 2011 improvements

• Performance improvements

• Up to 5X speedup observed

• Benefits

• Faster analysis times

• Improved productivity



ACMS Performance - Examples

• Example 1 (with K4 damping)

• SOL 111

• DOF: 7,300,000

• Elements: 900,000

• 3600 modes up to 800Hz

• Forcing frequencies: 320

• Example 2 (with K4 damping)

• SOL 111

• DOF: 8,500,000

• Elements: ~1 million

• 7197 modes upto 800Hz

• Forcing frequencies: 700

83

13.15

5.98

3.08

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

MD Nastran 2010.1

MD Nastran 2010.2 Beta


SMP=2 DMP=2

Elapsed Time (Hrs)

47.28

9.74 4.39

0.00 5.00

10.00 15.00 20.00 25.00 30.00 35.00 40.00 45.00 50.00

MD Nastran 2010.1



SMP=2 DMP=2

Elapsed Time (Hrs)

2010 20112011 SMP=2

DMP=22010 20112011 SMP=2

DMP=2



ACMS Performance: Examples

• SPCD Enforced Motion +

Frequency Dependent

Damping

• SOL 111

• Engine model

• 680,000 grid points

• 370,000+ elements

• 41 modes up to 1500Hz

• 500 forcing functions

8.28

2.95

0

1

2

3

4

5

6

7

8

9

MD Nastran 2010.1 MD Nastran 2010.2 Beta

Hours

2010 2011



Scratch Memory (SMEM)

Allocation

• Used to hold temporary information during analysis

• SMEM allocates database blocks in main memory

• Reduces I/O

• Reduces wall time

• Automated SMEM limits

• Uses maximum available memory

• Useful for large memory systems

• Available for SOL 101 and 400

• Benefits

• Avoids need for user to set limit based on system

• Improved performance of analysis and system

• Example

• Nonlinear analysis with contact (SOL400)

• Grid points 26,000

• Cycles 45



Automotive Large Displacement –

SOL 400

• 700,000 DOF

• I/O reduced:

• 1 Tb (mem=2Gb)

• 400 Gb ( mem=max )

0 2000 4000 6000 8000 10000 12000

I4 on 8G RAM system

I4 on 32G RAM system

I8 on 8G RAM system

I8 on 32G RAM system

Elapsed Time ( sec )( smaller is better )

Varying "mem"



Math Kernel Improvements

• Highly tuned math kernels for multi-threaded matrix algebra operations

• 2011 enhancements

• Improved performance

• Lanczos eigen solution

• Matrix factorization for symmetric real and complex systems

• Mixed mode matrix multiplication

• Improved multi-threaded shared memory parallel (SMP) scalability

• Windows and Linux

• Benefits

• Improved productivity, especially for large problems

• Example

• Engine + Driveshaft

• SOL111

• DOF: 8.4 million



Thermal Analysis: Performance

• Iterative solver in SOL400

• Nonlinear steady state thermal

• Nonlinear transient thermal

• Efficient in solving large thermal

models with solid elements

• Benefits

• Faster solution times

• Ability to solve larger models

• Improved productivity

• Example

• Disk brake

• 644594 CHEXA, 642 PENTA

elements

• Convection to time-varying

ambient temperature

• Transient analysis



Aeroelasticity Performance

• Implementation of automated

partitioning concept to break a

single SPLINE4 into smaller

splines

• Ability to restrict relaxation to

DISP instance of spline without

applying to FORCE instance

• Benefits

• Improved performance for large

models



Splining Performance: Example

CPU

I/O

Disk Space

Structural grids 59738

Aerodynamic grids 367337

Aerodynamic elements 732737

SPLINE4 Entries 20

Number of Blends

(SPLBLND2 entries)

20

Number of Relax entries

(SPRELAX entries)

7

SPLINRB entries 8



Assembly Modeling / HPC

• Pain

• Greater Accuracy requires finer models

• Requirement to obtain modes at

a higher frequency

• Nastran 2011.2 Capabilities

• GPGPU release

• Complex Eigenvalue

• Unsymmetric Solver

• Improved ACMS

• Reduce I/O time

• Benefits

• Improve performance for SOL 101, SOL 400 and Lanczos

• Substantial Reduction SOL 103

• Exterior Acoustics, Brake Squeal

Nastran 2011.2

0

50

100

150

fr resp total job fr resp total job

Case 1 Case 2

Elapsed time (min)

2011.1

2011.2

Example 1

SOL 111

87 thousand grid points; 388 Kdof

5 forcing frequencies

freq resp problem size = 47,875 DOF

Example 2

SOL 111

473 thousand grid points; 2.7 Mdof

500 forcing frequencies

freq resp problem size = 12,124 DOF

Used smp=4



92

Nastran 2011.2 Performance Features: GPGPU

Two examples from industry

DMP+SMP+GPU

SOL101 1.3M & 3.4M DOF models

0

2

4

6

8

10

1.3M DOF; fs0; Total

1.3M DOF; fs0; Solver

1.3M DOF; sta3; Total

1.3M DOF; sta3; Solver

3.4M DOF; fs0; Total

3.4M DOF; fs0; Solver

Speed up in total elapsed and solver times (1core = 1x)

MD Nastran 2011.2 Beta - GPU Computing

1 core

4 core

1GPU + 1 core

8 core (DMP=2)

2GPU + 8 core (DMP=2)

Higher is Better

fs0 = NVIDIA PSG node;

Linux, 96GB mem

Tesla C2050, Intel 2.27ghz

sta3 = AMAX server

Linux, 32GB mem

Tesla C2070, Intel 2.67ghz



Acoustics

• Pain

• Coupled Acoustic Problem is very expensive

• Unable to determine the source of the noise and it’s consequences


• Weakly Coupled Acoustics

• Structure (and Interior acoustic) solved with SOL 111

• Exterior acoustic model solved with SOL 108

• Improve Calculation of panel/modal participation factors

• Frequency Analysis – Complex stress recovery

• Actran trimmed material matrices in frequency response

Nastran 2011.2

0

4

8

12

16

Serial dmp=2 Serial dmp=2 dmp=4

MD Nastran 2010.1 MD Nastran 2011.2

Elapsed Time (hr)

Panel Participation

Freq. Resp

Eigenvalue



Advanced Nonlinear Analysis

• Pain

• Difficulty in obtaining solutions

• Inaccurate Friction Modeling

• Need to use both Nastran & Abaqus


• Reduced I/O Time

• Smart Contact Defaults

• Segments-Segment Enhancements

• Friction

• Large Deformation

• Thermal

• Benefits

• Correct solutions the 1st time

• One MSC Solution / Less rework

• Ability to verify more designs

Nastran 2011.2



Composite Simulation

• Pain

• Predicting composite failure

• Unable to interpret results

• Unable to predict Buckling of Aerospace Panels


• SIFT Model (Boeing Request)

• Solid Shell Output

• Optimization based upon layer stresses in complex frequency

• Tension only Shell Element

Nastran 2011.2



Explicit – SOL 700

• Improve Performance of FSI Applications

• DMP support for Adaptive Euler

• Enhancements to Coupling Algorithms

• DMP support for Importing Euler Arc files (Restart)

• Thermal Capability

• Coupled Thermal Structural Analysis

• Thermal Contact

• Thermal Materials

• Thermal Loading & Boundary Conditions (Temperature, Flux, Conduction, Convection & Radiation

• Additional Material Models (Wood and Ice)

• Euler Body Force on select parts of the model

• Composites – Support for Genoa Damage variables at individual layers

• ParaView Support for Post Processing

• Upgrade LS-Dyna libraries to R 5.1

Nastran 2011.2




• Nastran SOL 700 2011.2 Capabilities

• DMP for Adaptive Euler

• Benefits

• Performance Improvement

Speedup FactorsSimulation Time (sec)

Fluid Filled Bottle Drop with Adaptive MeshLinux 8664(Intel(R) Xeon(R) CPU E5420 @ 2.50GHz, 32GB RAM




• DMP for Adaptive Euler - Airbag Example

Air enters with time dependent mass flow

Platform : Linux x8664 with 8 cores




0

5

10

15

20

0 1 2 3 4

velocity

Time

Sheet Metal Forming Example

• Coupled Thermal Structural simulation

• Multiple Contact – Die-Sheet-Clamp-Punch

• Initial Conditions:

• Punch Temp. = 100

• Sheet Temp. = 200



Aeroelasticity

• Pain

• Need to have highly accurate aeroelastic loads but minimize computational requirements

• Time to create is nonlinear with size of model

• Unable to visualize spline fit

• Nastran 2011.2 / SimX Capabilities

• Transfer and Verify Loads

• Improve Blending of splines

• Benefits

• Reduce Computational Time

Nastran 2011.2


Thank You

Documents

2011 Product Portfolio - terasoft.com.t» Rigid body confirmation. ... Animation of Rigid Surface – Nastran DBALL 10. MSC Software Confidential ... [,r]) Position of the I body clearance