拓展了结构分析有限条法，基于固体力学有限形变理论的更新拉格朗日法（U 。

The finite strip method in structural analysis has been extended, and elastic-plastic large deformation spline finite strip method based on the Updated-Lagrange method (U.

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首先，本文基于虚功原理，推导了结构几何非线性方程，指出更新的拉格朗日列士法U。

First of all, the nonlinear equation of structure is presented in this paper based on virtual work principle. It is thought that the Updated Lagrangian Formulation u.

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