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Tutoriales guiados CATIA V5
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WS7-1CAT509, Workshop 7, March 2002
WORKSHOP 7
SEAT POST ASSEMBLY ANALYSIS
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WS7-2CAT509, Workshop 7, March 2002
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WS7-3CAT509, Workshop 7, March 2002
WORKSHOP 7 SEAT POST
Problem Descriptio The sales department has inormed en!ineerin! that the seat post
keeps "reakin!#
$erorm an assem"led static anal%sis to determine &h% andrecommend a sol'tion# (e conser)ati)e "% 'sin! a desi!n case o
200 l"s or&ard on the seat#
$ost is Al'min'm
*lastic Mod'l's, * 10#15*+ psi
$oissons atio, 0#3.+
/ensit% #09 l"in3
ield Stren!th 13,77 psi
200 l"s
o&er and 4pper clamp is Steel
*lastic Mod'l's, * 29#0*+ psi
$oissons atio, 0#3
/ensit% #2. l"in3
ield Stren!th 3+,000 psi $ost
Clamp
7 inches
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WS7-.CAT509, Workshop 7, March 2002
WORKSHOP 7 SEAT POST
S!""este# E$ercise Steps
1#
pen the e6istin! CATA prod'ct in the Assem"l% /esi!n &ork"ench#2# Appl% material properties to all parts#
3# *6amine and )eri% assem"l% constraints#
.# Create an assem"l% static anal%sis doc'ment 8#CATAnal%sis#
5# $re-process initial inite element mesh#
+# Appl% $ropert% Connections#7# Appl% a clamp restraint#
# Appl% a moment load#
9# Comp'te the anal%sis#
10# :is'ali;e the anal%sis res'lts#
11# Comp'te a
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WS7-5CAT509, Workshop 7, March 2002
pen the CATA
prod'ct
&s7seat$ostass%#CAT
$rod'ct in theAssem"l% /esi!n
&ork"ench#
Steps%
&'Select
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Step (' Appl. m-teri-l properties to -ll p-rts
1
Steps%
&'/o'"le click the
post @$art
representation in theeat'res tree 8it sho'ld
t'rn "l'e# This makes
the post @/eined in
&ork and la'nches
%o' into the $art
desi!n &ork"ench#
('Click the Appl%
Material icon#
)'Acti)ate the Metal
ta" in the i"rar%
&indo
0'Select Al'min'm,
select B#
1'Make certain
material is applied
properl% in the tree#
Appl% Steel to the
lo&er and 'pper clamp
parts#
2' /o'"le click
seat$STass% to
access the assem"l%
&ork"ench#
3
2
.
+
5
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Steps%
&'o' sho'ld "e in theAssem"l% desi!n
&ork"ench#
('The seat$STass%
o"ect in the eat'res
tree is the $rod'ct and
considered @/eined in
&ork &hen "l'e#
)'Dotice the small
dierences in icons#
0' These are %o'r
main assem"l% tools#
1' *6amine the
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*6amine constraints
"et&een the post and
lo&er clamp#
Steps%
&'Select the
Wirerame 8DF
)is'ali;ation option#
('Fi!hli!ht each
constraint separatel%#
(asicall% all + de!rees
o reedom &ill "e
constrained# A !ood
check is to mo)e parts
aro'nd ar"itraril% &ith
the compass and then
'pdate#
Also, stress anal%sis
propert% connections
are applied to these
assem"l% constraints#
The !oal is to set'p a
staticall% determinate
model#
Step )' E$-mie -# 3eri4. -ssembl. costr-its
1
2
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*6amine 'pper clamp
constraints#
Steps%
&'Fi!hli!ht each
constraint separatel%#
Step )' E$-mie -# 3eri4. -ssembl. costr-its
1
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Step 0' +re-te - -ssembl. st-tic --l.sis #oc!met
G'st like "eore#
Steps%
&'
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Step 0' +re-te - -ssembl. st-tic --l.sis #oc!met
Speci% 'ni='e
*6ternal Stora!e
director% locations#
Steps%
&'Select the Stora!e
ocation icon#
('Modi% the Res!lts
Stora!e ocation and
rename as sho&n#
)'Modi% the
+omp!t-tioStora!e
ocation and renameas sho&n#
0'>ood idea to
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Step 1' Pre6process iiti-l 4iite elemet mes*
/eine inear !lo"al
inite element meshproperties or all parts#
Steps%
&'*dit each part mesh
indi)id'all% "% do'"le
clickin! CT** in
the eat'res tree#
(' Speci% !lo"al meshand sa! as sho&n or
the post, select B#
)'Speci% !lo"al mesh
and sa! as sho&n or
the clamps, select B#
*ach part can ha)e
'ni='e element t%pes#
The inear element is
s'!!ested or
comp'tational speed
'ntil &e achie)e a
staticall% determinate
model#
1
3
2
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Step 2' Appl. Propert. +oectios
/eine a
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Clampin!
re='irement
. inches
Step 7' Appl. - cl-mp restr-it
1
We onl% &ant to clamp
the "ottom . inches o
the post# Modiication
o the post#CAT$art is
re='ired#
Steps%
&'Select Windo& E
&s7seat$ost#CAT$rod'ct#
This chan!es %o'r
acti)e doc'ment and
la'nches %o' into the
Assem"l% /esi!n
Work"ench#
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Step 7' Appl. - cl-mp restr-it
1We &ill create a
s'race that matches
%o'r clampin!
re='irements, then
@se& it onto the part#
Steps%
&'/o'"le clickin!
@post in the eat'restree &ill la'nch %o'
into the $art /esi!n
&ork"ench#
('
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Step 7' Appl. - cl-mp restr-it
1
2
Sketch a shape#
Steps%
&'Select the normal
)ie& icon to see the
"ottom i necessar%#
(' Select the circle
icon and create a
circle as sho&n#
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Step 7' Appl. - cl-mp restr-it
Constrain circle#Steps%
&'Select the
constraint icon#
(' Select the circle
pre)io'sl% created,
then the post o'tside
diameter# i!ht click E
Coincidence#
)' es'lt
0' Select the e6it
sketcher icon, this
takes %o' "ack to the
$art /esi!n
&ork"ench#
1
2
.
3
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Step 7' Appl. - cl-mp restr-it
Create a s'race that
e6actl% represents
%o'r clampin! area##
Steps%
&'Select the *6tr'de
icon#
(' Select the sketch
%o' pre)io'sl% created
as the $roile# Be% in
limits as sho&n, select
B#
)' es'lt
1
2a
2"
3
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Step 7' Appl. - cl-mp restr-it
Se&in! the *6tr'de#1
s'race onto the post
part#
Steps%
&'
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Step 7' Appl. - cl-mp restr-it
1
3 2
Steps%
&'Select the Clamp
estraint
icon#
('Select the post area
that &e 'st se&ed as'race on, select B#
The clamp onl%
applies to the "ottom .
inches#
)'Dote the Clamp
o"ect added to the
eat'res tree#
. inches
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Step ' Appl. - momet lo-#
2
.
3
Steps%
&'Select the Moment
icon#
('Select the . aces
&here the seat
attaches#
)'*nter -1.00 inch l"s
a"o't the %-a6is 8200 l"
6 7 inches#
0'Dote the Moment#1
o"ect added to the
eat'res tree#
1
2
200 l"
ma!e to sho&
The H% moment
7
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Step 8' +omp!te t*e --l.sis
3
/e"'!!in!
sin!'larities#
Steps%
&' /o'"le click on the
Static Case Sol'tion#1
in the eat'res tree
and )eri% the !a'ss
sol'tion t%pe is
selected#
('Select the comp'te
icon#
)'Comp'te All, select
B#
0'Dote the reso'rces
estimation, select es#
1'Sin!'larit%
detected, select B#
2
.
5
1
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WS7-23CAT509, Workshop 7, March 2002
Step 8' +omp!te t*e --l.sis
1
:is'ali;e &hat ca'ses
the sin!'larities so
%o' can properl%
restrain %o'r s%stem#
Steps%
&'Select the
/eormation icon#
('Dote the 'pperclamp part re='ires a
restraint#
)'n the eat'res tree
ri!ht click /eormed
Mesh o"ect then
select nacti)ate#
2
3
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WS7-2.CAT509, Workshop 7, March 2002
Step 8' +omp!te t*e --l.sis
/eine the second
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WS7-25CAT509, Workshop 7, March 2002
Step 8' +omp!te t*e --l.sis
2
Sho& the De4orme#
Mes*'
Steps%
&'Select the comp'te
icon#
('Comp'te All, select
B#
)'Dote the reso'rces
estimation, select es#
0' Dote all ima!es are
a)aila"le#
1'Acti)ate the
/eormed Mesh
ima!e#
Animate to )is'ali;e
"eha)ior#
1
3
.5
S &9 :i li * l i l
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Step &9' :is!-li;e t*e --l.sis res!lts
1
:is'ali;e the assem"led
:o Misesstress ima!e
and M-$im!m
E$trem-s#
Steps%
&'Select the :on Mises
con#
('Select on the Search
ma!e *6trema icon#
)' Select >lo"al and
re='est 2 ma6im'm
e6trema at most, select
B#
2
3
St &9 :i li t* l i lt
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WS7-27CAT509, Workshop 7, March 2002
Step &9' :is!-li;e t*e --l.sis res!lts
:is'ali;e Sectio +!tso the assem"led :o
Misesstress ima!e#
Steps%
&'Select C't $lane
Anal%sis con#
('4se the compass to
locate the c'ttin! planeas sho&n#
)' Modi% the c't plane
options to %o'r likin!,
select close#
e)ie& other areas#
3
1
2
St &9 :i li t* l i lt
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Step &9' :is!-li;e t*e --l.sis res!lts
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Step &9' :is!-li;e t*e --l.sis res!lts
1
:is'ali;e the
assem"led Estim-te#
Error ima!e and
M-$im!m E$trem-s#
Steps%
&'Select the displa%
stress estimated
precision con#
('Select on the Search
ma!e *6trema icon#
)' Select >lo"al and
re='est 2 ma6im'me6trema at most, select
B#
%o' do not see the
*6trema s%m"ol look in
no sho
2
3
St &9 :i li t* l i lt
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Step &9' :is!-li;e t*e --l.sis res!lts
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WS7-31CAT509, Workshop 7, March 2002
Step &9' :is!-li;e t*e --l.sis res!lts
Create an A#-pti3it.
Bo$to determine
Loc-l = Estim-te#
Error'
Steps%
&':eri% that the
*stimated *rror ima!e
is acti)e, and select the
Adapti)it% "o6 con#
('ocate and si;e the
adapti)it% "o6 as
sho&n#
)' Dote the ocal *rror.5#7I#
>lo"al error o 30I
and local error o .5I
is 'naccepta"le#
ecommend ma6 o
20I and 10I
respecti)el%#
Chan!in! to a$ara"olic element t%pe
mesh &ill %ield the
precise )al'es, "'t
comp'tational time is
appro6# 1 ho'r#
n the interest o time,
sta% &ith linear
elements or this class#
1a
1"
3
2
Step &9 :is!-li;e t*e --l.sis res!lts
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Step &9' :is!-li;e t*e --l.sis res!lts
1
:is'ali;e theassem"led
Displ-cemetima!e#
Steps%
&'Select the
/isplacement ma!e
con#
('/o'"le clickTranslational
displacement o"ect in
the eat'res tree to edit
ima!e parameters#
)' Click on A)era!e-so
in :is' ta" to s&itch
displa%, select B#
2
3
Step &9 :is!-li;e t*e --l.sis res!lts
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Step &9' :is!-li;e t*e --l.sis res!lts
:is'ali;e the :o
Misesstress or the
post#Steps%
&'Select the :on
Mises icon 8this
deacti)ates the acti)e
ima!e and acti)es :on
Mises#
('/o'"le click :on
Mises in the eat'res
tree to edit the ima!e#
)' Select the
Selections ta" then
CT** Tetrahedron
Mesh#1Jpost#1 o"ect,
select B#
0' i!ht click *6tremain eat'res tree then
select Loc-l !p#-te'
1' i!ht click >lo"al
Ma6im'm#1 then select
>oc!s o# /o'"le click
to see the ima!e
e6trem'm e#itor#
2
1
3
5a
.
5"
Step &9 :is!-li;e t*e --l.sis res!lts
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Step &9' :is!-li;e t*e --l.sis res!lts
:is'ali;e the :o
Misesstress or the
lo&er Clamp#
Steps%
&'/o'"le click :on
Mises in the eat'res
tree to edit the ima!e#
(' Select the
Selections ta" then
CT** Tetrahedron
Mesh#2Jlo&erClamp#1
o"ect, select B#
)' i!ht click *6tremain eat'res tree then
select Loc-l !p#-te'
0' i!ht click >lo"al
Ma6im'm#1 then select
>oc!s o# /o'"le click
to see the ima!e
e6trem'm e#itor#
1
2
.a
3
."
Step &9 :is!-li;e t*e --l.sis res!lts
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WS7-35CAT509, Workshop 7, March 2002
Step &9' :is!-li;e t*e --l.sis res!lts
:is'ali;e the :o
Misesstress or the
'pper Clamp#
Steps%
&'/o'"le click :on
Mises in the eat'res
tree to edit the ima!e#
(' Select the
Selections ta" then
CT** Tetrahedron
Mesh#3J'pperClamp#1
o"ect, select B#
)' i!ht click *6tremain eat'res tree then
select Loc-l !p#-te'
0' i!ht click >lo"al
Ma6im'm#1 then select
>oc!s o# /o'"le click
to see the ima!e
e6trem'm e#itor#
1
2
.a
."
3
Step &9 :is!-li;e t*e --l.sis res!lts
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WS7-3+CAT509, Workshop 7, March 2002
Step &9' :is!-li;e t*e --l.sis res!lts
:is'ali;e the :o
Misesstress locali;ed
at the clamp#
Steps%
&':eri% the :on Mises
Stress ima!e is acti)e#Then do'"le click to
edit the ima!e in the
eat'res tree#
(' Select the
Selections ta", then
the Clamp#1, select
B#
)' i!ht click on >lo"alMa6im'm#1 then select
ocal 'pdate to ind
ma6 stress on this
selection#
Also e6amine the
Moment#1#
1
2a
2"
3
Step &9 :is!-li;e t*e --l.sis res!lts
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Step &9' :is!-li;e t*e --l.sis res!lts
.
5a
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Step &9' :is!-li;e t*e --l.sis res!lts
1
.
7
23
5
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WS7-39CAT509, Workshop 7, March 2002
Step &&' >re?!ec. ,Mo#-l/ --l.sis 4or t*e -ssembl.
Start "% insertin! a
ne& re='enc%
anal%sis &ith restraints#
Steps%
&'re?!ec. ,Mo#-l/ --l.sis 4or t*e -ssembl.
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WS7-.0CAT509, Workshop 7, March 2002
Step &&' >re?!ec. ,Mo#-l/ --l.sis 4or t*e -ssembl.
Create mass
e='ipment#
Steps%&'Select the mass
icon#
('Select o'r inner
aces as the s'pports#
)'Be% in 200 l" as the
mass, select B#
1
3
2
Step && >re?!ec. ,Mo#-l/ --l.sis 4or t*e -ssembl.
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WS7-.1CAT509, Workshop 7, March 2002
Step &&' >re?!ec. ,Mo#-l/ --l.sis 4or t*e -ssembl.
Speci% sol'tion
parameters#
Steps%
&'/o'"le click
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WS7-.2CAT509, Workshop 7, March 2002
Step &&' >re?!ec. ,Mo#-l/ --l.sis 4or t*e -ssembl.
1
2
3a
:is'ali;e the res'lts#
Steps%
&'Select the
/isplacement ima!e
icon#
('/o'"le clickTranslational
displacement in the
eat'res tree to edit
ima!e parameters#
)'Click the
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WS7-.3CAT509, Workshop 7, March 2002
Step &('
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WS7-..CAT509, Workshop 7, March 2002
Step &('
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Step &('
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Step &)' S-3e t*e --l.sis #oc!met
Steps%
&'
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WS7-.7CAT509, Workshop 7, March 2002
p
P-r-bolic elemets
Step &0' Precise Res!lts
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p
:o Mises @it*
P-r-bolic elemets
Step &0' Precise Res!lts
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p
:o Mises Post E$trem-@it* P-r-bolic elemets
Step &0' Precise Res!lts
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p
:o Mises Lo@er +l-mp
E$trem- @it* P-r-bolicelemets
Step &0' Precise Res!lts
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WS7-51CAT509, Workshop 7, March 2002
p
:o Mises Cpper +l-mp
E$trem- @it* P-r-bolic
elemets
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