三种动态子结构方法的程序

给出了三种动态子结构方法的程序，对比了自由界面模态综合法，固定界面模态综合法，双协调自由界面模态综合法三种方法。-Shows three dynamic substructure method of procedure, compared to the free interface modal synthesis method, fixed-interface modal synthesis method, two-coordinate free interface modal synthesis method of three methods.