Structural reliability analysis method of underframe hoisting equipment based on GA-UGF
In order to improve the reliability analysis accuracy of underframe hoisting equipment,a struc-tural reliability analysis method based on GA-UGF model was proposed.Firstly,based on the results of structural static response analysis,a structural parametric analysis model was established and experimen-tal design was carried out.Secondly,according to the experimental design results,the observed values and occurrence probabilities of each random variable in the structure were counted,the mass moments of each random variable were calculated and the correction coefficients were added to each mass moment,and the experimental and theoretical mass moment errors of the structure response were minimized as the objective functions,and the genetic algorithm was used to improve the expression accuracy of the tradi-tional UGF model,and then the structural reliability analysis model was constructed in combination with the reliability theory.Finally,taking a certain type of underframe hoisting equipment as the research ob-ject,the proposed method was used to analyze the structural reliability,and the analysis results were com-pared with the traditional methods.The comparison results show that the constructed GA-UGF model can effectively improve the rationality of structural information transmission.The reliability index obtained based on the GA-UGF model is closer to the Monte Carlo method.This conclusion can provide a certain reference for further improving the reliability performance of the structure.
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维普
