Multi-objective Optimization Design of Heavy Forge Framed Hydraulic Press Driven by Stiffness and Mass

Abstract

Abstract: In order to satisfy the performance requirement of high stiffness and light weight of the NC isothermal hydraulic press, a design method of multi-objective optimization driven by stiffness and mass is proposed. Through analyzing the structure of 98 MN hydraulic press, key factors affecting the stiffness and mass are extracted. Data of relationship between stiffness / strength and key factors are obtained by orthogonal experiment in ABAQUS. The mathematical models of stiffness of upper beam and lower beam and strength of main components are constructed by use of first order response surface modeling method. Validity of these models is verified by analysis of variance. Mathematical models of mass of complete hydraulic press are established. The goal of high stiffness and light weight is reached by using the multi-objective genetic algorithms optimization method. The Pareto optimal solution set is obtained . Through optimization, the stiffness of 98 MN hydraulic press is increased by 5% and its mass is decreased by 10% in comparison to the original design.

Key words: Genetic optimal algorithms of non-dominate-solution order, High stiffness, Hydraulic press, Light weight, Multi-objective optimization, Orthogonal experiment

CLC Number:

TG315.4

LI Yancong;ZHANG Lianhong;LIU Zhanwen;WEI Wei;LI Sen. Multi-objective Optimization Design of Heavy Forge Framed Hydraulic Press Driven by Stiffness and Mass[J]. , 2010, 46(1): 140-146.

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Multi-objective Optimization Design of Heavy Forge Framed Hydraulic Press Driven by Stiffness and Mass

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