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Date of Publication:2022-10-09

Journal:应用力学学报

Affiliation of Author(s):运载工程与力学学部

Volume:26

Issue:1

Page Number:146-150

ISSN No.:1000-4939

Abstract:Due to the limitation taking place in measures and knowledge for the complex system, to describe the uncertainties of the structural models by random parameters is difficult. The random uncertainties of the mass, damping and stiffness matrices in the uncertain dynamic system can be simulated by random matrices. A high efficiency pseudo excitation method combining with precise integration method for the dynamic responses analysis of the nonparametric probability system subjected to non-stationary random load is developed. A numerical example shows that the uncertainties of models can not be ignored for precise manufacture. The proposed method is quite useful in the analysis of such problems.

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