Transactions of Materials and Heat Treatment

Title：Research on numerical simulation and experiment of forming limit for the spherical-bottomed cylindrical parts

Authors： CHEN Kang PENG Cheng-yun KU Mei-fang LIU Chun

Unit： Chongqing University of Technology

KeyWords： spherical-bottomed cylindrical parts drawing stress state Dynaform

ClassificationCode：TG386

year,vol(issue):pagenumber：2010,35(4):21-26

Abstract：

Force analysis of the spherical\|bottomed cylindrical parts was done. According to its forming characteristics, the forming process was divided into materials vacancies and straight punch stages, and the mathematical model was established. Stage stress analysis was carried out in various parts. Dynaform software was used to simulate the forming process of the spherical-bottomed cylindrical parts under various process parameters, and the impact law of the process parameters to the spherical\|bottomed cylindrical parts forming limit was obtained. It is that decreasing the blank holder force and friction coefficient in a certain range and increasing the thickness will expand the bulging region of forming parts, which is benefit to the forming limit of the spherical-bottomed cylindrical parts. The experiment verification is consistent with the conclusion.

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Reference：

［1］Pearce R. Formability of materials-2000A.D.[M]. Chicago:American Society for Testing and Materials, 1982.
［2］Dong Hwan Park, Prasad K D V Yarlagadda. Effects of punch load for elliptical deep drawing product of automotive parts[J].International Journal of Advanced Manufacturing Technology，2008,(35):814-820.
［3］周杰，陈康，彭成允. 球底直筒形拉深件成形极限理论及模拟分析[J].重庆理工大学学报，2010，24（1）：81-84.
［4］曹增强，胡世光.半球形拉深件成形研究[J].金属成形工艺，1990,8（2）：35-39.
［5］李海峰，何铁宁.半球形封头热拉深成形理论分析[J].金属成形工艺，2002，20(4):16-19.
［6］贺平，万良辉，王巍.球底圆锥形件拉深成形极限研究[J].锻压技术,2006,31(2): 22-25.
［7］赵军，张双杰.圆锥形零件拉深成形过程中接触应力分布的研究[J].机械工程学报，2000，36（5）：63-67.
［8］汪大年.金属塑性成形原理[M].北京：机械工业出版社，1982.
［9］许兰贵，王自勇，阮峰. 超薄板料多次拉深成形数值模拟关键问题处理[J]. 锻压技术,2009,34(5): 30-32.
［10］Tang C Y, Chow C L. Development of a damage-based criterion for ductile fracture predictive in sheet metal forming[J]. Journal of Materials Processing Technology,1999, 91：270-277.
［11］宋明杰,胡世光.板料拉伸塑性失稳准则及成形极限图的建立[J]. 锻压技术,1989,14(1):27-31.
［12］陶友瑞,张福全.半球形件冲压成形的防内皱压边力研究[J]. 塑性工程学报, 2004,11(1):29-31.

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