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发表于 2008-11-26 10:26:56
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来自 美国
There is some kind of sigularity in the system, can be numerical instability, can be instability in the structure itself. In any case, if you see dramatic change in result if you change the parameters just a little bit, then it is an indication that your problem is ill-posed.
You can try dynamic, refining mesh, etc to see what the result will be. And check if you set up a realistic problem.
原帖由 xuesao 于 2008-11-26 09:41 发表
我用 *static,stabilize=damping factor做一个shell的buckling,别的似乎还ok,就是当我把damping factor稍微改一点点,最后得到的形变后的shell样子差好远啊,有3,4对称的样子,所以敢问各位大侠到底怎么选比较合适 ... |
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