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。
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.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1993年第5期1-6,共6页
Journal of Tsinghua University(Science and Technology)
