Transactions of Materials and Heat Treatment

Title：Application of response surface method to optimize process parameters in engine heat shield forming

Authors： Qin Boying Qin Wendong Lin Xiankun Tang Shufang

Unit： Guangxi University of Science and Technology

KeyWords： heat shield stamping forming thinning rate wrinkling rate Box-Benhnken design response surface method

ClassificationCode：TG386.41

year,vol(issue):pagenumber：2016,41(3):22-28

Abstract：

Compared with the experimental results, the accurate simulation model of forming an engine heat shield was established by Dynaform. Based on the model, the experiments were arranged by Box-Benhnken design. Furthermore, the process parameters were chosen as independent variables with the wrinkling rate and the maximum thinning rate defined as response values. The two order polynomial response surface models of the process parameters with the maximum wrinkling rate and with the maximum thinning rate were established respectively and were optimized by Design-Expert. Then, the maximum thinning rate without optimizing the response surface model was taken as the constraint condition and the rate of response surface without optimizing the wrinkling model was defined as objective function. After that, the maximum thinning rate optimizing response surface model was taken as the constraint condition and the rate of response surface optimizing wrinkling model was defined as objective function. Parameters of the above two situations were optimized respectively. Finally, the maximum thinning rate and wrinkling rate could be controlled in a certain range by the heat shield model optimized process parameters, and the results of optimized response surface model are better.

Funds：

广西自然科学基金资助项目(2012GXNSFAA053208)；广西柳州市科学研究与技术开发计划项目(2013G010601)；广西区教育厅立项项目(LX2014197)；广西科技大学科学基金资助项目(校科自1307120)

覃柏英(1979-)，女，硕士，讲师通讯作者：秦文东(1982-)，男，硕士，助理研究员

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