本文简述了拱屈曲的二阶分析方法。按有限变形理论推导出几何非线性有限元方程,用自校正增量法求解。讨论了非线性微分方程的各种解法和选择载荷步长的各种方法。着重介绍了作者提出的自动选择荷载步长的 C 法,并通过数值算例说明方法和程序的正确。
【英文摘要】
In this paper it was presented that Second-order analysis method on buckling of arches The geometric nonlinear finite element equation has been developed according to the theory of finite deformation and has been solved using the self correting method Various methods of solving nonlinear differentiating equation and selecting loading step have been discussed The C method developed by author which can automatically select loading step has been introduced numerical exam_ plas sho.wed that the mathod and progr...
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