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发表于 2004-1-7 11:29:34
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来自 上海
回复: 问一个关于弹塑性分析的问题,哪位帮忙看看?多谢。
你在S4的INP中将*el print那一行修改为:
*El Print
MISES,
然后看看dat文件中的MISES应力的最大值是多少?是不是235?
看来你没好好看Getting Started
How does the maximum value of Mises stress compare to the value reported in the contour plot generated earlier? Do the two maximum values correspond to the same point in the model? The Mises stresses shown in the contour plot have been extrapolated to the nodes, whereas the stresses written to the report file for this problem correspond to the element integration points. Therefore, the location of the maximum Mises stress in the report file is not exactly the same as the location of the maximum Mises stress in the contour plot. This difference can be resolved by requesting that stress output at the nodes (extrapolated from the element integration points and averaged over all elements containing a given node) be written to the report file. If the difference is large enough to be of concern, this is an indication that the mesh may be too coarse.
为什么S4R的结果看起来要好一些?因为S4R只有一个积分点。
BTW: 为什么要在S4R中加上*Section Controls以增加Hourglassing刚度?我试过默认值,结果一样阿。 |
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