National Natural Science Foundation of China [52278235, 52478575]; Transportation Technology Project of Hunan Province [202309]; Scientific Research Foundation of Hunan Provincial Education Department [22B0270]; Open Fund Project of National Key Laboratory of Industrial Equipment Structural Analysis Optimization; CAE Software of Dalian University of Technology [GZ24129]
机构署名：
本校为第一且通讯机构
院系归属：
土木工程学院
摘要：
This paper efficiently realizes train riding comfort evaluation of a random three-dimensional train-bridge coupled system (TBCS) subjected to random track irregularities by constructing a surrogate model of the power spectral density (PSD) of the acceleration response of the train. The response PSD is regarded as a random function above random system parameters, and the dimensional decomposition and polynomial expansion are performed on random functions. The surrogate model of system response PSD is constructed using the expansion coefficients and polynomial basis. To avoid high-dimensional in...
