neo Lamarckism

The constitutive equations and FEM formulations of rock masses of large elastoplastic deformation are established by using updated Lagrangian method.

介绍了采用更新拉格朗日法的岩土体弹塑性大变形本构方程和有限元公式的推导过程。

With this method,a standard updated Lagrangian formulation is adopted to build the equilibrium equations of a beam element,the tangent stiffness matrix is derived from the principle of minimum potential energy,the computational procedure for large rotation is app.

这种方法采用更新拉格朗日列式,运用最小势能原理建立结构的平衡方程,并导出梁单元的刚度矩阵。