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Probability density evolution method of the prediction model of structural reliability from the time response under several times stochastic loads
Author(s): 
Pages: 413-418
Year: Issue:  4
Journal: Journal of Ship Mechanics

Keyword:  probability density evolutionstochastic loadstructuredynamic reliabilitymodel;
Abstract: The probability density evolution of the structural dynamic prediction models under several times random loads are presented. The probability density of several times stochastic loads can be obtained by the probability density of a time stochastic load. The prediction models of the structural reliability from the time response under several times stochastic loads with the strength degeneration and without degeneration over time are constructed by using the stress-strength interference theory and probability density evolution method. The differential equation in the models can be solved by using the forward differential method. The probability density functions of the structural strength redundancy in any time can be obtained. The struc-tural dynamic prediction reliability can be obtained by using integral method. Finally, the two given exam-ples show that this method is practicable, feasible and more accurately.
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