静力学分析有时候三维模型无法计算——发现之前计算不出来的原因是因为那个截面只是长度x方向设置了多个网格，而在yz方向就只划分了一个网格，导致无法计算。——Solver pivot warnings！！

静力学分析有时候无法计算——发现之前计算不出来的原因是因为那个截面只是长度x方向设置了多个网格，而在yz方向就只划分了一个网格，导致无法计算。——Solver pivot warnings or errors have been encountered during the solution.  This is usually a result of an ill conditioned matrix possibly due to unreasonable material properties, an under constrained model, or contact related issues.  Check results carefully.——需要每个方向都设置至少2个网格数，否组无法计算，除非是一维梁单元。

这段报错是ANSYS Mechanical / Workbench求解器非常常见的警告：

Solver pivot warnings or errors have been encountered during the solution

意思是：