工程结构的空间非线性有限元分析

有限元法作为一种非常有效的数值分析方法,在分析大型复杂结构中得到广泛应用。探讨了在分析非线性问题时常使用的迭代法和增量法及其各自的缺点。而由迭代法和增量法结合而成的混合方法,有效的解决了纯粹迭代法和增量法的不足。并应用此混合方法,对工程结构进行了有限元计算,分析了其承载能力,减小了分析空间非线性问题的误差。

Space non-linear finite element analysis in engineering structure

Finite element method as a very effective numerical analysis method applying in the analysis large-scale complex structure.This article introduced the space non-linear finite element analysis method,the iteration method and increases method which was often used in the analysis non-linear problem and their respective shortcomings were discussed.Mixed method which becomes by iteration method and increase method union,effectively solved shortcomings and insufficiencies of purely iteration method and increase method.Finally,the finite element computation to the engineering structure was carried out by applying the mixed method and its bearing capacity was analyzed.The results showed that the error of analysis space non-linear problem could be reduced.