基于随机有限元方法的结构响应灵敏度分析

摘要

对反映不确定性因素对结构随机响应影响程度的灵敏性进行了研究，引入了一种新的灵敏度因子概念，提出了基于随机有限元方法的结构随机响应灵敏度计算方法。结构实例分析表明该方法的计算结果是合理的，能反映实际情况，研究结果具有推广应用价值，其结论可供结构随机响应灵敏度分析时参考。%In this paper, the sensitivity that reflects the influence of therandom variables on the structure response is studied. By the application of a new concept of sensitivity factor, a new method for calculating the sensitivity factors of the stochastic response based on SFEM is suggested. The example results show that such method is reasonable and worthy of spreading and using in practice. The conclusion may provide reference for analysis of sensitivity of the structure response.