Method for generating practical multidisciplinary design optimization model automatically

Abstract

The invention relates to a method for generating a practical multidisciplinary design optimization model automatically, which comprises the following steps of: first, establishing an integrated product optimization model according to design requirements; second, filling in a 'correlation' matrix D according to the inclusion relation between functions and optimization variables in the integrated product optimization model; third, filling in a 'coupling' matrix C according to the inclusion relation among functions in the integrated product optimization model; fourth, filling in a 'time' matrix T according to time taken for calculating functions in the integrated product optimization model; fifth, carrying out automatic task division by a genetic algorithm according to the matrixes to obtain one main task and a plurality of subtasks; sixth, generating an MDO (Multidisciplinary Design Optimization) model according to the task division scheme. The method supports the computer based automatic generation of the MDO model, avoids the excessive independence on experience of designers, can obtain the most reasonable MDO model, and has the characteristics of good simplicity and practicality, wide application and the like.

Description

(1) Technical field: [0001] The invention provides a practical method for automatically generating multidisciplinary design optimization models, especially capable of dealing with coupling variables and random reliability functions in multidisciplinary design optimization models, and belongs to the intersection of multidisciplinary design optimization and reliability design for complex products technology field. (two) background technology: [0002] In the process of complex product design, due to the complexity of the models of each discipline, there is still a coupling relationship between disciplines, which brings great difficulties to the optimization design, and it is often difficult to obtain the optimal solution. Multidisciplinary Design Optimization (MDO) method is an effective way to optimize the design of complex products, and can use less computing time to obtain the optimal product design. [0003] Before carrying out multidisciplinary design optimization (MDO),...

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Problems solved by technology

When there are many coupling relationships among the disciplines contained in the product, especially when the reliability discipline (with randomness and large amount of calculation) needs to be considered, it will be difficult to control the generation process of the MDO model if only relying on the experience of the designer, and unreasonable MDO may be generated Model

An unreasonable MDO model will directly affect the effect of MDO work, including an increase in the overall optimization time, poor subtask parallelism, etc., which seriously affects the engineering practicability of the MDO method

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