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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3 R5 n c/ g- [9 e/ _0 Y
Displacement in the radial direction:8 m/ r: A5 b4 F0 O* [: t( e
Select “Axis1” and then define displacement plot in X-direction (radial to the axis). Select deformation scale=1
6 V |1 B% O0 R0 a5 _Right-click on the displacement plot icon “plot2” and then select”List selected”
: m+ x6 x7 H1 d1 [Average displacement of “pole piece lower” = -0.0019504” (decrease in radius)$ u4 p* A) q, a- P- M
Average displacement of “pole piece upper” = 0.007896 “ (increase in radius)( ?3 Y) H* O- Q& c. _
Sum of these 2 displacement = 0.009846” ~Initial interfernce of 0.01”
" u1 \- @8 D- Z/ o2 B, z4 CHoop Stress (tangential):- B! [- l3 l' @8 m3 b- B
Select “Axis1” and then define stress plot in Y-direction (radial to the axis). Select deformation scale=1
9 S4 G z+ I/ `' \/ yRight-click on the stress plot icon “plot2” and then select”List selected”
1 `0 ^' r- G6 L0 b9 L# `" _& p J# cNegative stress on “pole piece lower” (compression)
- P2 q2 z& _4 I% l% j) w! aPositive stress on “pole piece upper” (tension)1 S& ?' L m% p8 a
线性静力分析：定义材料属性
& z6 K' F- k4 ?3 mSimulate parts which are separated by large gaps9 W/ z' z z7 R3 y; l9 Y
First run the model with small displacement option and look at the results8 F! Q! x2 B4 W: o; f
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+ f$ @5 W5 J* h& t) d. d, `( i
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线性静力分析：网格划分
# H/ i0 I- l7 u! X( B1 h' tOpen “RectangleGap.sldasm”/ N2 G @% ]# V! ] ^; z
Define a static study “smallcontact”
. j a( Q( v4 K- f8 uApply material “Alloy steel” to both parts
- a' m5 O" X- _$ S' JApply a pressure of 725 psi on the top face! V+ q- d2 ~7 K8 f% T% e& h3 w* ~
Select the two front faces and then apply restraint. Select Flat face option and then select “Normal to face”) }( a# x$ Z1 |
Fix the left semi-circular face$ S2 `' z" W: S" z6 J8 w
Hide the loads/bc symbols
5 i. k3 ]" T8 V$ y7 RDefine “Surface” contact between the top face of the bottom leg and the perpendicular face5 m- _$ D0 R% \7 l0 O% R
Create mesh and run
0 B% M( m! j% C1 ]4 @Define a stress plot with scale factor = 1. Look at the contact surface. & f9 Q4 k5 {) `
线性静力分析：定义约束
8 c$ Q: j8 H( G+ v: W* j; m. WDefine a new static study “LargeDisp”: w% ^, v; h. F' ^" ~) j
Drag’n drop the material and loads/bc folders from “small contact” study
$ S8 T0 u1 H: M$ n: MRight-click on the study name and click on properties. Select “Large displacement contact” option.% k7 s6 c/ M+ V2 q/ f6 f
Run the analysis
" ~ {- l" J. Z( c4 l7 CDefine a stress plot with scale factor = 1. Look at the contact area.+ I5 G. h h. n8 ~: a; f
线性静力分析：定义载荷
/ w# [$ f' J! ^: t5 [. Z0 ]Simulate heat resistance between parts for thermal analysis 8 c5 P8 n# Z2 n' r
 Account for heat resistance of thin parts without actually modeling them!
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; b4 |' d) S1 Q9 l" w6 \0 x线性静力分析：求解. O! |# K+ H! _
Open “Thermal contact resistance_transistor.sldasm”, P& d% j8 u. z2 L9 h
Explode the model and set preferred units to “SI” and temperature units to “Kelvin”
& Q6 k; G( Q0 D/ ODefine a thermal study “NoRes”
5 H) U# o; A3 Y/ W& b/ h3 YApply material “AISI 304” for “Voltage regulator” and “Copper” for Heat sink
0 ?4 r' l* L/ @" s" \Define “Surface” contact with No resistance between the contact faces
$ n8 t; a- ~+ x: BApply convection to all the faces of the model except the contact faces
' \1 p6 x3 X4 A4 y/ g, \/ RFilm coefficient = 250 W/(m^2.K); k- j) Q, r/ }8 z$ C
Bulk temperature = 298 K
' S" i+ D' [! A M- `" q! @线性静力分析：观察结果# }+ \+ J3 \* n/ _+ x0 L3 }
Apply Heat power = 25 W for “Voltage regulator”; ^" b; V$ x z- ]* x6 z3 Z! S
Mesh with default settings and run the analysis. a2 Q& Y9 w# P( F7 Y5 q
Notice the temperature distribution of the heat sink
* q f4 N& \. C% oDistributed Resistance:5 p$ a4 m% s4 l* n, }5 F
Define a new thermal study “DistRes”0 {5 P! ^+ d& d% W2 G$ ^3 P. H
Drag’n drop “Material” folder and Loads/Bc folder from NoRes study to DistRes study' i6 F3 _/ k. o+ y; o1 ?
Edit contact pair definition and define distributed resistance = 0.005 K.m^2/W
; @: d3 ~6 m) I5 }, T2 GTotal resistance = Distributed resistance X Contact area = 0.005 X 0.0003392 = 14.7 K/W
, d. g; ^, l3 _) sRun the study “DistRes”
# i; ` G, w, j2 xNotice the temperature distribution of the heat sink9 @7 W- O: Y' d
Thermal Contact Example (Cont’d)
( `( q" E2 l4 {! f1 OProbe the temperature value" h4 ~. `) y: q: y
Define a thermal plot with mesh
& Z) c: h( p) N5 E) h5 [, S+ ZRight-click the plot icon and select Probe, l! A+ e1 s; |( z
Pick all the nodes on the edge of both the parts
! O# m/ c t, QClick 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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$ e2 l1 K5 c! O( h, lThermal Contact Example (Cont’d)1 L+ Q) z, [5 Y; l$ b6 X8 f7 [/ O
Total Resistance:
! X" ]+ H: q2 x$ RDefine a new thermal study “TotalRes”
! X5 s+ P4 S/ H* ^5 H ODrag’n drop “Material” folder and Loads/Bc folder from NoRes study to TotalRes study
5 I3 v! E2 q3 L7 c5 aEdit contact pair definition and define Total resistance = 25 K/W
# @$ ?- N( e8 c# IRun the study “TotalRes”: J9 g) ^- U! f7 Z/ f% R) r O
Notice the temperature distribution of the heat sink [2 s3 i8 ?6 \$ D
$ H" s P) Z# w, d. A) K3 dLoad Simulation: Remote Loads, e$ [8 b$ [# \" ~0 p* ^, h
Remote Loads
# _; i+ P2 H- c; U( FDirect Transfer
2 l' J1 y0 q. J( J- [( e2 {Flexible surface
" S' ^& g/ h; v% X2 L6 R9 s0 KApplied as equivalent force & moment$ i6 x2 i) r2 ?# k" Z% e
Rigid Beam! m# L* { E3 `+ D. b! V
Rigid surface( a* G5 G) H( q9 d) ^7 D7 w
Remote Restraint
! H, A8 Y& B1 j/ ~Rigid connection9 r0 r) g5 a/ L A
Model effect of a rigid virtual part between two faces
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Remote Load Example0 _3 W. h* T/ w( @ |
Open “RemoteLoadExample.sldasm”* e; g% a K- ]# S
Define a static study “Remote”1 e# v% w- h0 V
Apply material “Alloy steel”
- A: _: ^" a8 V4 Z' t! A1 q9 C. _Fix the flat face
0 v' A1 P* q" y6 l' b; GSelect “Coordinate system1” and the end face of the cantilever. Define remote load of 10N in the X direction.
2 {6 ]% h2 t B* u" pCreate mesh and run.
$ i5 r& H& D7 X+ e/ fDouble-click on “Plot1” under the stress folder
, f# `/ [4 _- `Animate the results
. I- q( t! Z9 [$ G: Z) oCompare the plot results of “Remote” study with “Axial Tension” study
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$ K% y' ?) [1 J! f& X3 j gMotion Load Transfer Using Remote Loads- ]4 y, V: U; g! z1 ~
Go to SW Add-in and click “COSMOS/Motion”
( K6 t3 r2 z @$ EOpen “LoadTransferModel_With_Result.sldasm”
) a, Y3 q- l0 R) x2 gPlay the animation and save the load file for frame # 3004 g; o, h3 X9 A7 `5 V, _' O8 _ L
Delete the motion results
- @( u9 ~6 W2 `) B" {& QGo to CW menu, Import Motion Load and open this load file from “MotionLoadTransfer” directory r0 E9 `& i9 y8 |7 ^
Select all the loads related to crank-1 and then click OK.; j+ F$ g+ d9 ], I5 K" Y6 k
Open the part “crank”& @- ]+ b7 J0 h7 y
You’ll see that there is a new study “Frame-300” with motion loads transferred as remote loads# y4 Y& _/ h. e1 q/ W
Apply material “Plain carbon steel”
# H3 m8 X8 j+ m% A* T$ `) rGo to study properties and select “FFEPlus” solver and “Inertia relief option”
; u: j! D% w. M2 ?! }Run the analysis
( ~0 H- U, d; J$ p+ W1 {Postprocessing: Results in local CS+ }) ~1 x' w6 h$ j$ S4 `
Plotting
7 O7 m* a+ N1 H% b" Q- yListings
' u# M1 x' k+ `! _Reaction forces2 W) k7 U U) K8 }- U
Postprocessing: Exploded views
6 e% Z: ~2 U) w3 q1 r) SPlot results on SolidWorks exploded views
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) A) G7 d( h' H5 Q3 |* O+ Q( A* J IPostprocessing: New tools7 S, {* N7 X6 [- F, n! e5 v. \3 Q) _
Improved probing with graphing option+ c7 j9 H' D/ C% [- B% C; r
List results by Entity1 P0 B, d8 ? V
Web Reports/ o# @* [6 N! ^$ L2 K
Inclusion of report templates in the feature tree
5 ?7 F3 f, F7 N2 E. ySaving of report setting5 m+ `; T- a: t9 z
Automatic creation of all plots: y; f' {- U8 R1 C
Report Example6 A, e# Y6 ~' r$ y2 g) Z
Open “ReportExample.sldasm”( u# g% p* z$ J4 @) l- R
New option save JPEG files (Right-click on the Study name)! E' f/ ^, ~4 W7 G& ?& h5 u/ Y0 ~
Right-click on Report and click define
' Z$ V% M5 T0 n9 BPoint to the logo file “ReportLogo.bmp”8 F6 {# P6 Z \2 |6 E% F
Point to the right stress AVI and VRML files
+ ~4 h8 E$ {# v7 ^. v( }% vSelect option “Automatically update all plots in JPEG files”. Click OK.3 @1 X4 ~( R/ f, f$ p
You can also get a print version
6 p. P+ O: f7 l3 [+ AMaterial4 n6 }+ O P. S: S
Supports orthotropic material properties for solids and shells
* E; p9 h( t8 tOption to use different Material library files4 \, L' q' V: H7 {3 W- J. J
New redesigned material browser utility7 v* Z8 n9 @ D" v) k
1 L. Y( ]" C( n# A6 h( HLicensing
" \5 h$ m6 B+ n2 B8 s$ CSingle license file for hardware lock & FlexLM security
# C# M) j K. V7 B+ ]New License Administrator to manage the license
/ Z# L( j7 H$ ^1 eSupport USB port hardware lock4 m' e; B, O7 D" G$ N
Support redundant servers/ f4 W9 v/ N$ A* g5 y( J' f4 b
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Other customer enhancements
+ E; m8 y6 Y8 e- v7 a$ I5 TAutomatically run analysis after meshing; _# @+ i0 V/ _! I1 `, ?
Edge pressure for shells& o6 a5 `8 ~; f4 z7 p/ B e9 @" R
Apply uniform temperature to components/ l( Y* W3 V2 F9 D
Automatic adjustments of Max & min in plots on update
# i2 t1 R& i5 `" M' U4 v3 j7 AFFEPlus solver for thermal analysis
: `: F( \$ {) s. S0 FIncrease the limit on number of modes for frequency analysis from 20 to 100
: g9 Y& S5 U: u" H7 tAdd symbol for gravity loads
# e* k- T# I% wImprove section clipping
0 l) j0 ~! e* W2 r0 KSave plots in JPEG format
0 d$ C% i/ X$ I! c$ V1 Z$ _/ R: [Improve transient thermal animations6 k0 J r4 Q. r- ^$ ~. w
Option to switch between different languages8 s9 _- u1 N" A9 [1 `5 D4 |
Others…' v, K" Z/ I6 j3 _
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发表于 2008-3-27 16:54:45