Transactions of Materials and Heat Treatment

Title：Numerical simulation of multiple grippers flexible stretch forming for spherical part

Authors： CHEN Xue LI Ming-zhe FU Wen-zhi FENG Peng-xiao

Unit： Jilin University Beihua University

KeyWords： plasticity processing sheet metal forming stretch forming numerical simulation multiple grippers stretch forming

ClassificationCode：TG386.3

year,vol(issue):pagenumber：2010,35(4):32-36

Abstract：

Multiple grippers stretch forming (MGSF) is a new flexible stretch forming technology for sheet metal. A finite element model of the spherical parts was built by finite element software, the impact of different technics modes and process parameters on the forming quality of the parts was studied. The results show that sheet metal parts formed by MGSF attaches die more easily, its strain distribution is more uniform and its forming quality gets better than that formed by traditional stretch forming mode. The less is friction coefficient between the sheet metal and die, the less is thickness reduction. The transition zone is shortened, wrinkling defect is avoided and material utilization is improved in the MGSF. The simulated results were validated by experiments. The obtained achievements are useful for the optimal design of MGSF equipment and the plasticity processing study of practical sheet.

Funds：

欧盟第六框架协议STREP:DATAFORM资助项目(ASTS-CT-2006-030877)；吉林大学“985工程”资助项目

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