Transactions of Materials and Heat Treatment

Title：Influence of neutral layer inside displacement on bending springback

Authors： GUAN Ying-ping ZHANG Qing ZHAO Jun(College of Mechanical of Engineering Yanshan University Qinhuangdao 066004 China)

Unit：

KeyWords： strain neutral layer inside displacement bending spring back

ClassificationCode：TG386

year,vol(issue):pagenumber：2007,32(2):26-28

Abstract：

There exists the elastic deformation during the process of sheet bending,and it will influence the springback of sheet after unloading.Traditional theory has not considered the influence of the neutral layer inside displacement on bending springback when analyzing the springback.According to the elasto-plasticity bending theory,an approximate calculation formula of springback angle was educed and the influence of neutral layer inside displacement to bending springback was discussed through analyzing the stress-strain of wide sheet bending considering the hardening and aeolotropic condition.

Funds：

河北省自然科学基金资助项目(No.501215);; 燕山大学博士基金资助项目(No.B152)

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