基于切比雪夫代理模型和差分进化的移动载荷区间问题分析

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户：galen621

【摘要】

：

在不确定性梁的移动荷载问题研究中，将梁的弯曲刚度、密度、移动质量考虑为区间变量，提出将基于切比雪夫多项式的代理模型和差分进化优化算法相结合，求解梁的区间不确定性响应，并通过数值算例对所提方法进行了验证。当区间较大时，无论采用优化或蒙特卡罗方法求解，都需要反复求解确定性的移动载荷问题，由于问题的时间相关性，计算工作量很大。

【作者】

：

杨圣银杨海天

【机构】

：

大连理工大学工业装备结构分析国家重点实验室/工程力学系,大连116024

【出处】

：

中国计算力学大会2018暨国际华人计算力学大会2018

【发表日期】

：

2018年10期

【关键词】

：

移动荷载区间不确定性切比雪夫多项式差分进化

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基于切比雪夫代理模型和差分进化的移动载荷区间问题分析

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