ansys命令流 用于提取模态分析后的质量矩阵和刚度矩阵，便于二次开发使用 建模和分析部分需要另外进行(Ansys command stream is used to extract the mass matrix and stiffness matrix after modal analysis, which is convenient for secondary development.)

在做结构分析的时候，我们往往会用到结构的刚度矩阵 但是由于计算量比较大，所以从ansys中提取是一个不错的办法。(n structural analysis, we often use the stiffness matrix of the structure, but because of the large amount of calculation, it is a good way to extract from ansys.)