Identify the stochastic dynamic load on a complex uncertain structural system

• Published in: Mechanical systems and signal processing Vol. 147; p. 107114
• Main Authors: Wu, Shaoqing, Zheng, Yi, Sun, Yanwei, Fei, Qingguo
• Format: Journal Article
• Language: English
• Published: Berlin Elsevier Ltd 15.01.2021; Elsevier BV
• Subjects: Algorithms; Complex structure application; Covariance; Dynamic loads; Excitation; Finite element method; Green's functions; Identification methods; Mathematical models; Parameter identification; Parameter uncertainty; Polynomial chaos expansion; Polynomials; Random variables; Statistics; Stochastic load identification; Structural safety; Taylor expansion; Taylor series; Uncertain structural system; Taylor expansion; Polynomial chaos expansion; Complex structure application; Uncertain structural system; Stochastic load identification

•A Modified Perturbation Stochastic Finite Element Model (MPSFEM) is proposed.•A Stochastic Load Identification (SLI) algorithm based on MPSFEM is developed.•A standard SLI framework for complex uncertain structures is developed. Estimating the statistics of stochastic dynamic forces applied on engi...