网壳结构非线性分析力学模型研究

A Nonlinear Mechanical Model of Reticulated Shells

在研究结构失稳机理的基础上，提出了一个适用于稳定平衡路线且能表示初始缺损、力学效应的非线性力学模型，该模型反映了初始轴向力、弯矩及偏心的影响，数字例子表明本文提出的分析是精确的，可用于网壳结构或其他非线性结构的强度及稳定分析。

n the basis of studying the mechanisms of instability of reticulated shells, the authors present a nonlinear mechanical model which is able to trace the quilibrium path, express the mechanical effect of initial imperfection and reflect the effect of initial axial force, initial moment of bending and eccentricity on the structure behaviour, Some numerical examples show that the model is accurate and can be used to strength and stability analysis of reticulated shells and other nonlinear structures.