此代码可作为分析一般斜拉桥模态分析的ANSYS源代码，类似情况更改几行代码即可。-This code can be used as general analysis of cable-stayed bridge modal analysis ANSYS source code, a similar situation to change a few lines of code.

基于非线性计算斜拉索的频率。需要输入初始应变(Calculating the frequency of a cable-stayed cable)