Transactions of Materials and Heat Treatment

Title：Calculation of critical thickness of tube-shaped parts wrinkling in sheet drawing process

Authors： GUAN Ying-ping 1 ZHAO Jun 1 GUO Bao-qiang 2(1.Yanshan University 2.Shenyang Heavy Machinery Group Co.Ltd)

Unit：

KeyWords： Drawing Linearization of Hill's yield criterion Critical thickness Drawing coefficient

ClassificationCode：TG386

year,vol(issue):pagenumber：2004,29(6):3-5

Abstract：

In this paper, based linearization of Hill's yield criterion for normal anisotropic materials and the anisotropic theory, a calculating formula of critical thickness for the sheet wrinkling is deduced, through analyzing stress and strain in flange. Furthermore, the relationship between drawing coefficient and critical thickness is presented in the condition of different performance factors, such as hardenability value and anisotropic coefficient of metal sheet.

Funds：

国家自然科学基金资助项目 (598750 74)

Reference：

1　M B斯德洛日夫,E A波波夫金属压力加工原理北京:机械工业出版社,1983,11:377～383
2　姜奎华.冲压工艺与模具设计.北京:机械工业出版社,1999.
3　拉深过程智能化控制中的侧壁起皱临界条件.第八届全国塑性加工学术年会及全球华人先进塑性加工技术研讨会论文集.北京:2002,11:727
4　汪大年.金属塑性成形原理.北京:机械工业出版社,1993.

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