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首页> 外文期刊>International journal of stochastic analysis >Application of Stochastic Sensitivity Analysis to Integrated Force Method
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Application of Stochastic Sensitivity Analysis to Integrated Force Method

机译：随机灵敏度分析在综合力法中的应用

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摘要

As a new formulation in structural analysis, Integrated Force Method has been successfully applied to many structures for civil, mechanical, and aerospace engineering due to the accurate estimate of forces in computation. Right now, it is being further extended to the probabilistic domain. For the assessment of uncertainty effect in system optimization and identification, the probabilistic sensitivity analysis of IFM was further investigated in this study. A set of stochastic sensitivity analysis formulation of Integrated Force Method was developed using the perturbation method. Numerical examples are presented to illustrate its application. Its efficiency and accuracywere also substantiated with direct Monte Carlo simulations and the reliability-based sensitivity method. The numerical algorithm was shown to be readily adaptable to the existing program since the models of stochastic finite element and stochastic design sensitivity are almost identical.
机译：作为结构分析中的一种新公式，由于对计算力的准确估算，“集成力法”已成功应用于许多土木，机械和航空工程结构。目前，它正在进一步扩展到概率领域。为了评估系统优化和识别中的不确定性影响，在本研究中进一步研究了IFM的概率敏感性分析。利用摄动法建立了一套综合力法随机灵敏度分析公式。数值例子说明了其应用。直接的蒙特卡洛模拟和基于可靠性的灵敏度方法也证实了其效率和准确性。由于随机有限元模型和随机设计灵敏度模型几乎相同，因此数值算法很容易适应现有程序。

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