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工程力学  2014 

梁杆结构几何非线性有限元的数值实现方法

DOI: doi:10.6052/j.issn.1000-4750.2013.05.ST08, PP. 42-52

Keywords: 梁杆结构,几何非线性,有限元法,增量法,非线性分析

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Abstract:

梁杆结构几何非线性有限元方法主要包括两个部分,建立虚功方程和实现数值求解.该文运用对比方法,分析了采用UL型增量理论的梁杆结构几何非线性有限元法求解过程与连续体求解过程的主要不同点,特别是论述了确定加载步末的内力状态的重要性和方法.

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