平面梁杆结构几何非线性分析的一种简便方法

A simple method for geometric nonlinear analysis of plane beam bar structures

本文提出了一种新的几何非线性分析方法，适用于结点位移任意大、单元刚体转角任意大、单元局部弯曲比较小的平面梁杆结构。文中的刚度矩阵和附加荷载列阵都是以显式形式给出的。

A new method for geometric nonlinear analysis is put forward in this paper. It is suitable for the plane beam bar structures in which there are large node displacements, large element rigid rotations, and relatively small elastic element deformations. It is a simple method with great precision. The stiffness matrixes and additional load columns in the paper are written out in the obvious form, so they can be directly used.