Multidisciplinary integrated design method utilizing reliability as independent discipline

Abstract

The invention relates to a multidisciplinary integrated design method utilizing reliability as an independent discipline, comprising the followings steps: firstly, establishing a reliability simulation model by adopting a reliability model automatic generating method, and carrying out simulation for multiple times by adopting a Monte-Carlo method so as to calculate the reliability; secondly, constructing a reliability pseudo model by adopting a pseudo modelling method on the basis of the reliability simulation model; thirdly, constructing a reliability discipline model by utilizing the multi-complexity technology on the basis of the reliability simulation model and the pseudo model; fourthly, establishing pseudo models of other disciplines to serve as other discipline models; fifthly, establishing a whole optimization model containing the reliability discipline model; sixthly, decomposing the model to obtain a hierarchical multidisciplinary design optimization model; and seventhly, optimizing by adopting an improved collaborative optimization algorithm until an optimal design scheme is obtained. According to the invention, autonomy of the reliability discipline is maintained while integrated optimization is carried out on the reliability and performances, thus being beneficial to multianalysis and quantitative control on the reliability.

Description

technical field [0001] The invention provides a multidisciplinary comprehensive design method with reliability as an independent discipline, relates to multidisciplinary design optimization technology and reliability analysis technology, and belongs to complex product comprehensive design technology. Background technique [0002] At present, in the product design process, there is a phenomenon that the product design process and the reliability analysis process are separated from each other, and the reliability of the product cannot be designed into the product, resulting in problems such as many failures, low service life, and high maintenance costs during use. . However, due to the complex structure and many disciplines involved in complex products, the reliability problem is particularly prominent. The emergence of multidisciplinary design optimization technology that can make full use of the mutual influence and coupling effect between various disciplines provides new i...

AI Technical Summary

Problems solved by technology

[0002] At present, in the product design process, there is a phenomenon that the product design process and the reliability analysis process are separated from each other, and the reliability of the product cannot be designed into the product, resulting in problems such as many failures, low service life, and high maintenance costs during use.

However, due to the complex structure and many disciplines involved in complex products, the reliability problem is particularly prominent.

The emergence of multi-disciplinary design optimization technology that can make full use of the interaction and coupling between various disciplines provides new ideas for the design of complex products, but does not propose a solution to the above problems

Reliability in reliability-based multidisciplinary design optimization is essentially the probability that a design point satisfies a certain constraint condition, and this method fails to consider factors such as faults, let alone perform independent analysis and quantitative control on reliability

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