Transactions of Materials and Heat Treatment

Title：Critical calculation and checking condition of causing internal wrinkle

Authors： Inner Mongolia Polytechnic University Liu Jianhua Ding Guo Wang Zhiheng

Unit：

KeyWords： Drawing Unsupported wall region Tangential compressive stress Internal wrinkle Critical calculation

ClassificationCode：TG35

year,vol(issue):pagenumber：2000,25(2):28-31

Abstract：

In this paper,through stress analysis of region about conical and spherical parts during drawing,a calculating formula of maximum tangential compressive stess in unsupported wall region is deduced.And this is condition of causing internal wrinkle.Then on the premise to guarantee not breaking workpiece,a critical calculating formula is presented.

Funds：

华中理工大学塑性成形模拟及模具技术国家重点实验室赞助

Reference：

1　梁炳文 ,胡世光 .板料成形塑性理论 .北京 :机械工业出版社 ,1 987.
2　李硕本 ,于连仲 .曲面零件成形的分析与工艺参数的确定 .锻压技术 ,1 981 ,6( 3 ) .
3　万敏等 .圆锥形零件冲压成形过程分析 .金属成形工艺 ,1 997,1 5( 3 ) .
4　赵希禄 .半球形零件成形的应力分界圆 .金属成形工艺 ,1 997,1 5( 3 ) .
5　胡世光 .板料冷压成形原理 .北京 :国防工业出版社 ,1 979.
6　 Kobayashi S.Approximate solution for proform design in shellnosing.Int.J.Mach.Tool Des.1 983 ( 2 3 ) .

Service：

【This site has not yet opened Download Service】【Add Favorite】