Application experiment of the Kriging approximate model in lightweight design of subframe
WANG Qiang
SU Xiaoping
LU Yiwen
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 fea-ture 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 opti-mized 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 fre-quency 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 dif-ferent softwares and effectively avoided the distortion of the model.
Keywords：subframeKriging approximate modellightweight design
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 95-101 )