Structural reliability calculation method and device and medium

Abstract

The invention relates to a structure reliability calculation method and device and a medium, and the method comprises the steps: obtaining stress data and strength data of a plurality of structure samples; setting a random variable X to obey three-parameter Weibull distribution with a position parameter a, a scale parameter b and a shape parameter c, and obtaining a probability weighting moment of the three-parameter Weibull distribution based on a cumulative distribution function of the parameter Weibull distribution; based on the stress data and the strength data, estimating three-parameter estimation values of three-parameter Weibull distribution corresponding to the strength data and the stress data by adopting a probability weighting moment of the three-parameter Weibull distribution; and calculating the reliability of the stress-strength interference model based on the three-parameter estimation value. Compared with a traditional estimation method, the method can obtain a more reliable and accurate parameter estimation result under the condition of limited samples.

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