Error in symeqn called by dstmak. Please send data to your ANSYS Technical S
2011年05月14日
总结下最近以来和其他同学一起经历的ANSYS结构分析出现的错误及原因。
1、计算过程中出现某个点的位移很大,比如说达到1E13。
这个错误的原因有几个:
A、模型中存在重节点,即同一个位置有两个不同编号的节点,这些重节点不是你预先设定的,而是没有注意到它们的存在,导致计算时这些节点飞了! 有时候甚至存在重单元。主要是由于建模粗心大意。特别是,如果用体和线的镜像命令时,会在镜像处生成重节点,重单元。
B、整个模型的约束不够,应该检查约束;
C、也有可能是模型中的某个局部出现屈服,破坏,导致位移过大。即使模型正确,但是在过大的荷载作用下,也会出现这种情况。
2、非线性分析不收敛,unconverged solution
这个问题的原因很多,慢慢总结。
3、Error in symeqn called by dstmak. Please send data to your ANSYS Technical Support Provider.
这个错误最近碰到,很奇怪。网上也没有找到原因。
寝室同学是在进行较大的荷载分析时,会出现这个错误。初步估计是因为模型中的某个局部出现屈服,破坏。
另外,如果有接触单元的话,开始求解之前,加上这个命令很有用: CNCHECK,ADJUST
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