等效结点力 　单元刚度矩阵的坐标变换 整体刚度矩阵 　边界约束条件的处理 -Equivalent nodal force of element stiffness matrix of the overall stiffness of the coordinate transformation matrix to deal with boundary conditions

等效结点力 　单元刚度矩阵的坐标变换 　　整体刚度矩阵 边界约束条件的处理 -Equivalent nodal force of element stiffness matrix of the overall stiffness of the coordinate transformation matrix to deal with boundary conditions

等效结点力 　　单元刚度矩阵的坐标变换 　整体刚度矩阵 　　边界约束条件的处理 -Equivalent nodal force of element stiffness matrix of the overall stiffness of the coordinate transformation matrix to deal with boundary conditions