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A TIME-VARIANT RELIABILITY ANALYSIS METHOD FOR NON-LINEAR LIMIT-STATE FUNCTIONS
Author(s): 
Pages: 264-272
Year: Issue:  2
Journal: Chinese Journal of Theoretical and Applied Mechanics

Keyword:  time-variant reliabilitymost probable pointlinearizationfirst order reliability method(FORM);
Abstract: Time-variant reliability problems appear in the engineering practice when loads stochastically change or the material properties of the structure deteriorate in time. In this paper, a time-variant structural reliability analysis method for non-linear limit-state function is presented. In this method, the stochastic process in the limit-state function is first discretized. Each discretized limit-state function is linearized at the most probable point(MPP), and it is further simplified into a time-invariant reliability analysis problem which is then solved by using the traditional first order reliability method(FORM). Three numerical examples are analyzed to demonstrate the effectiveness of the present method.
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