fortran编写的一个二维有限元程序，主要是杆件组成的结构。-fortran prepared a two-dimensional finite element program, mainly composed of rod structure.

对平面桁架进行应力分析，位移分析等~基于matlab编写，运行ptruss.m文件即可(The stress analysis of the plane truss, the displacement analysis and so on are written based on MATLAB, and you can run this program by running ptruss.m)