几何非线性平面梁

代码说明：

一端固定一端受到向下集中力作用的悬臂梁有限单元法matlab建模。有完整的线性刚度矩阵、大变形矩阵和初应力矩阵，以及全局坐标系到局部坐标系的坐标转换矩阵。 The cantilever beam finite element method with one end fixed and the other end subjected to downward concentrated force is used for matlab modeling.There are complete linear stiffness matrix, large deformation matrix and initial stress matrix, and coordinate transformation matrix from global coordinate system to local coordinate system.