Kriging近似模型在副车架轻量化设计中的应用试验

王强; 苏小平; 鲁宜文

doi:10.3969/j.issn.2096-1553.2018.02.014

Volume 33 Issue 2

March 2018

Article Contents

Abstract

References

WANG Qiang, SU Xiaoping and LU Yiwen. Application experiment of the Kriging approximate model in lightweight design of subframe[J]. Journal of Light Industry, 2018, 33(2): 95-101. doi: 10.3969/j.issn.2096-1553.2018.02.014

Citation: WANG Qiang, SU Xiaoping and LU Yiwen. Application experiment of the Kriging approximate model in lightweight design of subframe[J]. Journal of Light Industry, 2018, 33(2): 95-101. doi: 10.3969/j.issn.2096-1553.2018.02.014 shu

Application experiment of the Kriging approximate model in lightweight design of subframe

School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China

Received Date: 2017-04-23
Available Online: 2018-03-15

Abstract

The light weight design of the subframe is either not ideal, or the accuracy of the model should be higher. To deal with the problems, the Kriging approximate model was used to make a lightweight design for the subframe.Firstly,the Latin hypercube sampling test design method was used to sample the important feature points of the subframe, and the Kriging approximate model was combined to parameterize the subframe. Then, the fatigue of subframe was taken as the target parameter,and 11 thickness dimensions were selected as design variables and optimized. The optimal solution was obtained through about 400 iterations, and the optimized subframe quality was 11.3 kg, which was reduced by 10.3% compared with that before optimization. The maximum stress value under beating condition still satisfied the yield condition, and the free model frequency also met the model requirement, which realized the lightweight design better. The advantage of this method was that it not only achieved better optimization results, but also did not need to transform among different softwares and effectively avoided the distortion of the model.
- subframe,
- Kriging approximate model,
- lightweight design
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