关于过盈配合的接触算例
模型很简单，就是一个轴配一个孔结构，过盈量是1e-4mm，这里我只加了材料和属性，麻烦高手做一下过盈的设置，大家交流下经验吧~~~~~ 有没有高手指教一下阿~~~~~~~~~ 本帖最后由 ql274435275 于 2014-2-8 15:27 编辑结果如下:
下图变形放大了10000倍！过盈量为1e-4。
请高手指正，谢谢！
F:\workdata\CAE\test_gap\aaaa.JPG 为什么组件out 和shaft没有赋予属性的，我附上后结果就出现了错误 ql274435275 发表于 2014-2-8 15:23
结果如下:
下图变形放大了10000倍！过盈量为1e-4。
请高手指正，谢谢！
下载了fem文件，但是无法计算出结果啊？ 本帖最后由 ql274435275 于 2014-11-1 10:35 编辑
你可以把out文件贴出来看一下哈，radioss版本为11.0以上。out文件如下：
************************************************************************
** **
** **
** OptiStruct 13.0 **
** **
** Design and Optimization Software **
** from Altair Engineering, Inc. **
** **
** **
** Windows 7 WorkstationSP1 (Build 7601)PVC_PC **
** 4 CPU:Intel(R) Core(TM) i5 CPUM 480@ 2.67GHz **
** CPU speed2650 MHz **
** 2104 MB RAM,7529 MB swap **
** **
** Build tag: 0725791_5533130_Ce64RBW8UH12M:91799-0004000020004001**
************************************************************************
**COPYRIGHT (C) 1996-2014 Altair Engineering, Inc.**
** All Rights Reserved.Copyright notice does not imply publication. **
** Contains trade secrets of Altair Engineering, Inc. **
** Decompilation or disassembly of this software strictly prohibited. **
************************************************************************
*** OptiStruct defaults set from:
install config file: D:/Altair/13.0/hwsolvers/optistruct.cfg.
NOTE # 9199
MSGLMT=STRICT is active, all messages will be printed.
You can suppress some less important warning messages by use of
MSGLMT=BRIEF or UNREF (in config file or in the input data).
1 PARAM(s) were set:
INREL ,-2
NOTE # 1929
Created RAM scratch area: total size 200 MB.
*** See next message about line 11107 from file: test_gap3.fem
"FORCE 2 2793 0 0.00.0 0.0 0.0"
*** WARNING # 1027
FORCE data has zero force.
*** WARNING # 1265
PSHELL 6 has thickness 0.001 or less and bending properties defined.
This can lead to matrix singularities, causing message 153.
If this element is intended to be only a membrane element, please leave
MID2 and MID3 blank on the PSHELL data, or use PARAM,SHL2MEM.
************************************************************************
OPTIMIZATION FILE AND PARAMETER INFORMATION :
---------------------------------------------
FEM model file : test_gap3.fem
Output files prefix : test_gap3
Model read from files:
test_gap3.fem
************************************************************************
************************************************************************
FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------
Total # of Grids (Structural) : 3994
Total # of Elements : 3434
Total # of Degrees of Freedom : 12316
Total # of Non-zero Stiffness Terms: 496830
Element Type Information
------------------------
CHEXA Elements : 2866
CQUAD4 Elements : 136
PLOTEL Elements : 216
CGAPG Elements : 216
Load and Boundary Information
-----------------------------
FORCE Sets : 1
SPC Sets : 1
Material and Property Information
---------------------------------
PSOLID Cards : 2
PSHELL Cards : 1
PGAP Cards : 1
MAT1 Cards : 2
************************************************************************
************************************************************************
OPTIMIZATION PROBLEM PARAMETERS :
---------------------------------
NO DESIGN MATERIAL OR DESIGN VARIABLES FOUND: ANALYSIS ONLY
------------------------
Static Subcase Summary :
------------------------
---------- ----------------
Subcase ID SPC ID FORCE ID
---------- ----------------
1 1 2
---------- ----------------
Run Type : Analysis Only (No design elements)
Scratch file directory : ./
Free space: 48.587 GB
Number of CPU processors : 4
************************************************************************
************************************************************************
MEMORY ESTIMATION INFORMATION :
-------------------------------
Solver Type is:Sparse-Matrix Solver
Direct Method
Current Memory (RAM) : 205 MB
In addition a ramdisk area was allocated in memory : 200 MB
Estimated Minimum Memory (RAM) for Out of Core Solution : 28 MB
Recommended Memory (RAM) for Out of Core Solution : 31 MB
Recommended Memory (RAM) for In-Core Solution : 74 MB
DISK SPACE ESTIMATION INFORMATION :
-----------------------------------
Estimated Disk Space for Output Data Files : 4 MB
Estimated Scratch Disk Space for In-Core Solution : 10 MB
Estimated Scratch Disk Space for Out of Core Solution : 86 MB
************************************************************************
BEGINNING ANALYSIS SOLUTION ....
************************************************************************
ANALYSIS RESULTS :
------------------
ITERATION 0
*** WARNING # 1955
Static Loadcase 1 has zero static force vector.
This typically produces zero solution and zero compliance.
Auto-SPC d. o. f.s for loadcase 1
Number of Auto-SPC d. o. f.s =648
------------------------------
Grid No. Component
------------------------------
2633 4 5 6
2634 4 5 6
2635 4 5 6
2636 4 5 6
2637 4 5 6
2638 4 5 6
2639 4 5 6
2640 4 5 6
2641 4 5 6
2642 4 5 6
2643 4 5 6
2644 4 5 6
2645 4 5 6
2646 4 5 6
2647 4 5 6
2648 4 5 6
2649 4 5 6
2650 4 5 6
2651 4 5 6
2652 4 5 6
2653 4 5 6
2654 4 5 6
2655 4 5 6
2656 4 5 6
2868 4 5 6
2869 4 5 6
2872 4 5 6
2873 4 5 6
2876 4 5 6
2877 4 5 6
2880 4 5 6
2881 4 5 6
2884 4 5 6
2885 4 5 6
------------------------------
Because of PARAM, PRGPST, 100, Auto-SPC printing is limited to 100 dofs.
Nonlineariterationsummary for Subcase 1
Subcase 1Load step: 0.1000
--------------------------------------------------------------------------------
Nonlinear Error MeasuresGap and Contact Element StatusMaximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip FrozenPlststrn
--------------------------------------------------------------------------------
14.88E-07 9.90E+01 1.30E-14 1.30E-14 216 0 0 0 00.00E+00
24.88E-07 6.21E-16 1.30E-14 1.60E-29 216 0 0 0 00.00E+00
Subcase 1Load step: 0.2500
--------------------------------------------------------------------------------
Nonlinear Error MeasuresGap and Contact Element StatusMaximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip FrozenPlststrn
--------------------------------------------------------------------------------
14.88E-07 1.06E-13 1.30E-14 1.28E-29 216 0 0 0 00.00E+00
Subcase 1Load step: 0.4750
--------------------------------------------------------------------------------
Nonlinear Error MeasuresGap and Contact Element StatusMaximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip FrozenPlststrn
--------------------------------------------------------------------------------
14.88E-07 1.04E-13 1.31E-14 1.28E-29 216 0 0 0 00.00E+00
Subcase 1Load step: 0.8125
--------------------------------------------------------------------------------
Nonlinear Error MeasuresGap and Contact Element StatusMaximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip FrozenPlststrn
--------------------------------------------------------------------------------
14.88E-07 1.20E-13 1.28E-14 1.29E-29 216 0 0 0 00.00E+00
Subcase 1Load step: 1.0000
--------------------------------------------------------------------------------
Nonlinear Error MeasuresGap and Contact Element StatusMaximum
Iter Avg. U EUI EPI EWI Open Closed Stick Slip FrozenPlststrn
--------------------------------------------------------------------------------
14.88E-07 1.78E-13 1.29E-14 1.91E-29 216 0 0 0 00.00E+00
*** Nonlinear solution has converged ***
(Scratch disk space usage for starting iteration = 7 MB)
*** WARNING # 312
In static load case 1, the compliance is negative or large -2.72081e-014.
Optimization/buckling analysis cannot be performed.
due to possible rigid body mode.
*** INFORMATION #942
Apparently some contributions to negative compliance come from
gap/contact elements. This can happen in case of initial interference (U0<0)
or significant attractive force (KB>0). To ignore gap/contact contributions
to compliance, set GAPCMPL to NO on the GAPPRM card.
(Running in-core solution)
Volume = 4.98058E+002 Mass = 2.77625E-006
Subcase Compliance
1 -2.720811E-14
************************************************************************
ANALYSIS COMPLETED.
************************************************************************
RESOURCE USAGE INFORMATION
--------------------------
MAXIMUM MEMORY USED 205 MB
IN ADDITION 200 MB RAMDISK AREA WAS ALLOCATED IN MEMORY
MAXIMUM DISK SPACE USED 2 MB
************************************************************************
************************************************************************
COMPUTE TIME INFORMATION
------------------------
EXECUTION STARTED Sat Nov 01 10:32:22 2014
EXECUTION COMPLETED Sat Nov 01 10:32:31 2014
ELAPSED TIME 00:00:08
CPU TIME 00:00:11
************************************************************************
***** END OF REPORT *****
For Useful OptiStruct Tips and Tricks, go to the URL:
http://www.altairhyperworks.com/tips.aspx
非常:victory:不错 13.0这么高啊 学习一下过盈配合在radioss中的方法，谢谢了！ ql274435275 发表于 2014-2-8 15:23
结果如下:
下图变形放大了10000倍！过盈量为1e-4。
请高手指正，谢谢！
你好 请问怎么查看过盈量 过盈量装配模拟分析可以在hypercrash里建模，里面有比较便捷的流程。 正好遇到孔轴过盈配合问题，下来研究一下 很好的资料学习了 感謝無私分享... 楼主，写个流程大家学习下 感谢分享！ 就是喜欢这么牛逼的你们 顶顶顶顶顶顶顶顶顶顶顶顶顶 好好学习学习
顶起来！！！:lol
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