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发表于 2008-3-28 09:07:19
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来自： 中国天津
线性静力分析：定义专题
# K) h5 @9 \" ]6 O( V" H, w' VDisplacement in the radial direction:
# E, p( _9 {& Y2 w. bSelect “Axis1” and then define displacement plot in X-direction (radial to the axis). Select deformation scale=1+ }7 D2 H- g' Y4 r$ }) N4 p: V0 u, \
Right-click on the displacement plot icon “plot2” and then select”List selected”
9 I3 K7 I; s0 C9 V) @, sAverage displacement of “pole piece lower” = -0.0019504” (decrease in radius)
9 Y k8 F( }( p0 QAverage displacement of “pole piece upper” = 0.007896 “ (increase in radius)
! r" P/ j1 y' {Sum of these 2 displacement = 0.009846” ~Initial interfernce of 0.01”
9 V0 h# H0 \1 b5 WHoop Stress (tangential): z2 x5 F# {2 _3 @
Select “Axis1” and then define stress plot in Y-direction (radial to the axis). Select deformation scale=19 v* {, ?$ E" w& O* U0 X) x0 c
Right-click on the stress plot icon “plot2” and then select”List selected”8 X$ P; Z" z2 G- r4 O7 o
Negative stress on “pole piece lower” (compression)
# I6 _: }0 B& k. \Positive stress on “pole piece upper” (tension)1 {. o" w+ u+ j3 @7 ~& z9 W4 O
线性静力分析：定义材料属性
. X( D0 l( ^# T/ ?5 z) _* M2 RSimulate parts which are separated by large gaps
; |3 `! Q! [4 P) ?First run the model with small displacement option and look at the results2 @3 J. S; P( L4 G& Y4 t& G: m
If you see that there is a change in the orientation of the contact surfaces during loading or if the results doesn’t look realistic, use large deflection option
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: k7 |9 W) p U6 R2 J线性静力分析：网格划分
+ }6 |, h# q6 X t% pOpen “RectangleGap.sldasm”: {) ~2 @. S( s/ n+ G
Define a static study “smallcontact”0 p* _! F. h5 ^) K5 X
Apply material “Alloy steel” to both parts* u4 b+ m* ~/ I/ d4 x. }1 O
Apply a pressure of 725 psi on the top face+ F8 B4 b1 I; a' C: `
Select the two front faces and then apply restraint. Select Flat face option and then select “Normal to face”
H" i: W9 L* s0 xFix the left semi-circular face
7 o% E" y& V* u7 f: S- v3 }Hide the loads/bc symbols
! X# V+ Z: ~0 K- RDefine “Surface” contact between the top face of the bottom leg and the perpendicular face
6 g9 p% Z0 o+ w+ YCreate mesh and run
" W) J" H, V/ A+ M4 RDefine a stress plot with scale factor = 1. Look at the contact surface.
) D9 g$ P) f9 p线性静力分析：定义约束
" \; }/ m1 G) Q) A$ g- {5 NDefine a new static study “LargeDisp”' ^( J3 b" D) T( d
Drag’n drop the material and loads/bc folders from “small contact” study( [# B, _- v D# m
Right-click on the study name and click on properties. Select “Large displacement contact” option.
& b0 h% T2 Q0 x+ ?Run the analysis% @; ^& N8 M" k# E
Define a stress plot with scale factor = 1. Look at the contact area.% X- W9 U! n/ g0 S0 N
线性静力分析：定义载荷
' _; L$ ^/ C2 ]0 c1 Q# H3 ESimulate heat resistance between parts for thermal analysis 1 K5 [! L% m8 S3 N
 Account for heat resistance of thin parts without actually modeling them!9 ]7 A( A* X+ M. _( e- N) y
" t( G. I. |/ F& i% v. W线性静力分析：求解
K, ?; O" n1 V2 U u2 D3 [* ~Open “Thermal contact resistance_transistor.sldasm”
) g- w8 S4 q( x1 w: j+ {8 EExplode the model and set preferred units to “SI” and temperature units to “Kelvin”
8 I: D7 e" p7 k3 d! p5 ?Define a thermal study “NoRes”
9 j t, e$ m8 L0 t3 w8 E6 c+ Y4 }Apply material “AISI 304” for “Voltage regulator” and “Copper” for Heat sink2 s( K/ f3 C) a2 p( i
Define “Surface” contact with No resistance between the contact faces
1 N7 H1 |0 s9 Y2 lApply convection to all the faces of the model except the contact faces Y" E/ X9 R5 f1 U
Film coefficient = 250 W/(m^2.K)
* n$ C* H8 D& m. r9 oBulk temperature = 298 K
# D+ _& Q% B9 |- ^8 c9 c _" t线性静力分析：观察结果& N* p+ L, V- g, K' l7 h. X
Apply Heat power = 25 W for “Voltage regulator”. W! ~: A+ s+ O% [7 Z0 v+ A, q% M2 h
Mesh with default settings and run the analysis
8 a2 B( T0 z" F% wNotice the temperature distribution of the heat sink9 P: O9 v9 H/ ]2 `* A1 O1 s, ^1 R
Distributed Resistance:' B3 i8 c' B1 z: V |
Define a new thermal study “DistRes”1 q! z+ v5 q6 i
Drag’n drop “Material” folder and Loads/Bc folder from NoRes study to DistRes study
! V) o) _( P* gEdit contact pair definition and define distributed resistance = 0.005 K.m^2/W
! O* @% ?% L1 ^* S$ o6 ]Total resistance = Distributed resistance X Contact area = 0.005 X 0.0003392 = 14.7 K/W
5 T" h) `1 c5 z) M: ?! Q6 v% W: xRun the study “DistRes”
4 q. F5 b, u0 ]- E3 L. r' @Notice the temperature distribution of the heat sink4 G6 ^8 p% Y# ]( f$ c
Thermal Contact Example (Cont’d)" ^) V c& f& r4 }# T2 D* k
Probe the temperature value4 j: k* S( J, b# m% G( z
Define a thermal plot with mesh
4 W S7 j( O3 t+ a0 ARight-click the plot icon and select Probe" V' N% ]8 E8 c. F) q+ w1 m
Pick all the nodes on the edge of both the parts1 v7 ]0 U9 |- x8 l8 X# `) b
Click on the Plot icon to view the temperature variation from the top face of the voltage regulator to the bottom of the heat sink
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( b% _: s. N4 h' h% e( l$ _/ k5 vThermal Contact Example (Cont’d)
) @8 ^4 k- f V6 v/ F( B4 }Total Resistance:: o% ^0 ~; E7 n5 F: A/ {
Define a new thermal study “TotalRes”
) S1 t2 l1 O6 H' s: T( {6 D; q6 `& aDrag’n drop “Material” folder and Loads/Bc folder from NoRes study to TotalRes study+ x3 n* v' M' i/ J. Z
Edit contact pair definition and define Total resistance = 25 K/W ! M1 `2 h. u* Y5 F7 P
Run the study “TotalRes”
5 m, U; K% N) F2 F1 S+ yNotice the temperature distribution of the heat sink
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3 z- {2 i$ P- U' tLoad Simulation: Remote Loads
% F" G* l7 Q# u# E3 L6 URemote Loads7 k5 F6 v- Z6 ]0 O2 F' u
Direct Transfer
2 z& t. f8 z- gFlexible surface) S4 X( S4 n4 s1 N: I# ^
Applied as equivalent force & moment" X- {4 h3 U# _# N+ ` g' a, E
Rigid Beam
" ]) N+ X7 g: n; }( U7 `4 E0 LRigid surface
6 X' O. q v5 ^, `Remote Restraint
; ~1 E. }- Y( F) R: R% NRigid connection% n z& @- M- D& M$ t: ^
Model effect of a rigid virtual part between two faces
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Remote Load Example l2 b, y2 F: B+ G0 ^5 `
Open “RemoteLoadExample.sldasm”
' m- }) a$ f7 e% Y7 h" x# uDefine a static study “Remote”
{: T5 b8 p" o, Q4 y$ Y. aApply material “Alloy steel”( R7 }% k: R, ~. w3 n- D' P+ i6 Q# @
Fix the flat face
) o8 ^ L1 j* |3 [ p7 ZSelect “Coordinate system1” and the end face of the cantilever. Define remote load of 10N in the X direction. & e5 k% W* g5 Y; w/ ^
Create mesh and run.
/ z4 P4 J2 _/ R. N! `Double-click on “Plot1” under the stress folder
- \1 q9 B) i, |3 s$ R2 p- VAnimate the results) t9 m2 I9 ~8 C
Compare the plot results of “Remote” study with “Axial Tension” study
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5 z& U. E0 U. ]$ M5 ?Motion Load Transfer Using Remote Loads
) K% d3 C! ?# S' j4 KGo to SW Add-in and click “COSMOS/Motion”3 H( _& ]5 S( o6 Y# U$ d3 t( F
Open “LoadTransferModel_With_Result.sldasm”) i% j, r1 O% B& K1 k$ H
Play the animation and save the load file for frame # 300
6 b- Z a- w' e* X( nDelete the motion results
% }* @7 T7 F- A/ D5 o( kGo to CW menu, Import Motion Load and open this load file from “MotionLoadTransfer” directory" U# ~2 O) G* [
Select all the loads related to crank-1 and then click OK.
7 p" ~6 f( F) vOpen the part “crank”$ T! t# L" ^& C4 }( f1 J
You’ll see that there is a new study “Frame-300” with motion loads transferred as remote loads/ r$ c8 \- O" Q) C- t" s% b% o
Apply material “Plain carbon steel”
, |5 G' F4 c: M: ]2 i1 }& ?; A# s. }Go to study properties and select “FFEPlus” solver and “Inertia relief option”! D% d- o" C' V0 R& p3 }: [; Y4 ^
Run the analysis; P' A4 ?8 D; h' I% D) T" o |2 z% ~
Postprocessing: Results in local CS" Q+ W+ y! a& ^' j3 ]$ H
Plotting
$ V4 {, ^/ l4 {$ bListings7 p, l9 W* i) l8 G y9 h
Reaction forces
- k4 Z5 {8 G4 x: LPostprocessing: Exploded views
9 g2 _( N+ z8 D9 {Plot results on SolidWorks exploded views. A. J) W2 I; O" [. X
" u& N a3 }% ]* j/ ePostprocessing: New tools
7 u$ P5 `4 m) ~+ L" T- q# v! SImproved probing with graphing option' k$ C" O0 \. Z) ]2 z
List results by Entity
- x) s" J" M% n; ]' z2 r* m3 M! rWeb Reports
3 Z4 S7 K. w0 ? U9 Y" U! S4 S' GInclusion of report templates in the feature tree. `8 \% b4 Z* @# | P$ N
Saving of report setting
. G1 W5 s/ I# A9 XAutomatic creation of all plots
1 F. C0 M( c# S$ ~' lReport Example3 ^# P% c( V/ g% q' n
Open “ReportExample.sldasm”
. i+ L2 }& s' N# E" p v$ x9 lNew option save JPEG files (Right-click on the Study name)
: I: [4 _6 x& O$ Y. JRight-click on Report and click define, v9 Z- b7 c6 S& O! Y$ N6 z
Point to the logo file “ReportLogo.bmp”- i1 ]3 J7 g/ P* v% u- h/ z0 b0 i
Point to the right stress AVI and VRML files
8 U. X* x/ w, X0 V1 I* CSelect option “Automatically update all plots in JPEG files”. Click OK.
( I- y4 _% H4 I4 a% j+ Y4 tYou can also get a print version
$ f% R/ C5 {9 r- ZMaterial3 J- F# {3 I2 @0 D3 ]/ r k6 F. Y
Supports orthotropic material properties for solids and shells
" z# A9 w5 `: L- E; @5 A* |" HOption to use different Material library files) F0 f+ z% S+ V6 I- C
New redesigned material browser utility# v3 K" T1 v$ F+ S0 t
/ N) X2 P3 B; A& wLicensing
! Z0 P+ T6 S4 m9 U+ a4 e. R& vSingle license file for hardware lock & FlexLM security
! C' d5 `' {$ V% QNew License Administrator to manage the license
& X8 U% c" L' S2 r t& XSupport USB port hardware lock
7 J3 o+ ~( Q1 } jSupport redundant servers, {. o3 }7 Z. {' J8 ?
- e, Y5 V9 x) F/ E. JOther customer enhancements I+ R+ r; W$ N3 B
Automatically run analysis after meshing
- \4 ^1 S7 P9 X! pEdge pressure for shells- F: u# Z9 o1 |$ {# D, }) C
Apply uniform temperature to components$ ~, W- T3 V3 Z7 j* R3 i( X
Automatic adjustments of Max & min in plots on update
`4 c8 e+ a6 ^, ~5 lFFEPlus solver for thermal analysis
5 j9 e9 ^. W' v: n; L U+ T! lIncrease the limit on number of modes for frequency analysis from 20 to 1005 e* }6 a- Z( w
Add symbol for gravity loads
8 L8 j% P6 _" @2 U" I a6 g) OImprove section clipping
7 l4 @2 u/ L7 Y; X" RSave plots in JPEG format/ A1 G7 \, d: i8 i
Improve transient thermal animations
2 `8 g0 ^2 {+ q, n3 o0 POption to switch between different languages
5 F/ K) E" ^# l. ~Others…" G! x% B! O% ~ k4 {
3 I+ e1 A F7 _* [$ RThank You! |
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发表于 2008-3-27 16:54:45