Multi-objective preform optimization for spherical hinge mandrel based on response surface methodology

2nd International Workshop on Materials Science and Mechanical Engineering

机械制造;材料科学

Huang, Y.^1 ; Du, C.K.^1 ; Wang, L.G.^1 ; Zhang, Z.Y.^2 ; Zhuang, X.W.^2 ; Liu, Q.^2

School of Material Science and Engineering, Jiangsu University, Zhenjiang

212013, China^1

Longcheng Precision Forging Co. Ltd., Changzhou

213164, China^2

关键词: Effective stress;    Optimization method;    Orthogonal design;    Orthogonal experiment;    Response surface method;    Response surface methodology;    Second order response surfaces;    Spherical hinges;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/504/1/012050/pdf
DOI  :  10.1088/1757-899X/504/1/012050

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The multi-objective optimization was studied in application of response surface method and orthogonal design for a preform design of vehicle thrust rod spherical hinge mandrel. Firstly, taking deformation uniformity and mold filling completeness as objectives, then an orthogonal experiment was designed to acquire main factors which influence total deformation quality. The effects of two main factors were precisely predicted through MATLAB and the results were discussed by optimal graphics. Secondly, on basis of optimized results, a second-order response surface model was established through equant design. The model was designed for preform re-optimization taking lower forging load and mold maximum effective stress as objectives. In application of preform optimization method, the best polytechnic parameters were selected, and qualified products were produced.