Analytical local and global sensitivity of power spectrum density functions for structures subject to stochastic excitation

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• 作者：Wang-Ji Yan ^{civilyanwj@gmail.com} ; Hua-Ping Wan ^{huaping.wan@gmail.com} ; Wei-Xin Ren ; ^{renwx@hfut.edu.cn}
• 关键词：Sensitivity analysis ; Pseudo-Excitation Method ; Power spectrum density ; Gaussian process model ; Algebraic method
• 刊名：Computers & Structures
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：182
• 期：Complete
• 页码：325-336
• 全文大小：2503 K
• 卷排序：182

文摘

This work deals with the local and global sensitivity of PSD for random responses analytically. The work is conducted utilizing the Pseudo-Excitation Method (PEM). Analytical formulae are derived on the basis of a direct algebraic method. The analytical formulae are compact, devoid of modal truncation problem and efficient to program. Global sensitivity analysis is implemented analytically by incorporating Gaussian process model.