| 多组载荷作用下结构的极限分析 |
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| 引用本文： | 张远高,张丕辛,陆明万.多组载荷作用下结构的极限分析[J].清华大学学报(自然科学版),1993(5). |
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| 作者姓名： | 张远高 张丕辛 陆明万 |
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| 作者单位： | 工程力学系
(张远高，张丕辛)，工程力学系(陆明万) |
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| 摘 要： | 研究多组载荷作用下刚塑性体极限分析上限格式的数值计算方法。通过采用有限元离散技术和 Ｍｉｓｅｓ屈服条件，引入了一种直接迭代的算法，它将产生一个单调递减的载荷因子序列，该序列收敛于真实极限载荷因子的上限，同时也得到相应的机动场。算例分析表明了该算法的稳定性和高效率。
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| 关 键 词： | 塑性力学 极限分析 有限元方法 |
Limit analysis of structures under multi--loading systems |
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| Zhang Yuangao,Zhang Pixin,Lu Mingwan.Limit analysis of structures under multi--loading systems[J].Journal of Tsinghua University(Science and Technology),1993(5). |
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| Authors: | Zhang Yuangao Zhang Pixin Lu Mingwan |
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| Institution: | Zhang Yuangao,Zhang Pixin,Lu Mingwan Department of Engineering Mechanics |
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| Abstract: | This paper deals with the computational limit analysis of rigid--plastic bodies under multi--loading systems. Based on the classical kinematic theorem of plasticity theory and the von Mises yielding condition, a finite element formulation for upper bound analysis is proposed and solved by an iteration algorithm directly. This algorithm produces a monotonically decreasing sequence of load multipliers which converges to an upper bound of the real limit load multiplier. Some numerical examples of plate and shell problems are presented. |
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| Keywords: | plasticity limit analysis finite element method |
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