Analysis of bulging process of aluminum alloy by overlapping sheet metal and its formability

被引：20
|
作者：
Gao, Tie-jun [1 ]
Liu, Yang [1 ]
Chen, Peng [1 ]
Wang, Zhong-jin [2 ]
机构：
[1] Shenyang Aerosp Univ, Fac Aerosp Engn, Shenyang 110136, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2015年 / 25卷 / 04期
基金：
中国国家自然科学基金;
关键词：
overlapping sheet; aluminum alloy; bulging; power hardening material; formability; PRESSURE;
D O I：
10.1016/S1003-6326(15)63697-4
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The influences of strength coefficient K, work hardening exponent n and thickness t of the overlapping sheet on bulging process are analyzed based on hardening material model. Also, bulging experiments are carried out by taking the aluminum alloy LF21 as formed sheet metal, and selecting overlapping sheet with different thicknesses and material properties, by which accuracy of the above analysis result is verified in the aspects of geometric shape, thickness distribution and limit bulging height. The results show that higher strength coefficient K, larger work hardening exponent n and proper thickness of the overlapping sheet are helpful to improve the formability and forming uniformity of formed sheet metal.
引用
收藏
页码：1050 / 1055
页数：6
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