Uncertain factor-correlated four-high mill multidisciplinary reliability design optimization method

Abstract

The invention discloses an uncertain factor-correlated four-high mill multidisciplinary reliability design optimization method. The method comprises the following steps: constructing a four-high mill multidisciplinary design optimization model; constructing a four-high mill uncertain factor-correlated quantification model; constructing a four-high mill multidisciplinary design optimization model under an uncertain factor-correlated condition; converting the related uncertain factors into independent uncertain factors and calculating the reliability; and constructing a four-high mill multidisciplinary reliability design optimization model under uncertain factor-correlated condition so as to realize the four-high mill multidisciplinary reliability design optimization. According to the method, the hyper-ellipsoid theory, the reliability theory and the multidisciplinary design optimization theory are combined, so that the incorrect design result caused by neglecting the correlation among the uncertain factors in the traditional design method is solved, and the requirement for high reliability of complicated mechanical products is satisfied.

Description

technical field [0001] The invention belongs to the technical field of multidisciplinary design optimization of mechanical products, and in particular relates to a method for multidisciplinary reliability design optimization of a four-high rolling mill related to uncertain factors. Background technique [0002] Multidisciplinary Design Optimization (MDO for short) is the latest and most active field of aircraft design methods in the world. Multidisciplinary design optimization is a method of fully exploring and utilizing the collaborative mechanism of interactions in engineering systems to design complex systems and subsystems. Its basic guiding principle is to use appropriate optimization strategies to organize and manage the optimization design process. The complex system is decomposed into several subsystems consistent with the existing engineering design organization form, and the complex system is comprehensively designed to achieve the purpose of shortening the design ...

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Problems solved by technology

[0005] The purpose of the invention is: in order to solve the problem of inaccurate design results caused by artificially ignoring the correlation between uncertain factors in the traditional design method, the present invention proposes a four-high rolling mill multidisciplinary reliable Sexual Design Optimization Method

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