锻压技术

5754-H111铝合金板材成形极限实验及数值模拟

英文标题：Forming limit experiment and numerical simulation of 5754-H111

作者：刘振勇李亚光李大永

单位：上海交通大学

分类号：

出版年,卷(期):页码：2014,39(1):35-40

摘要：

为适应节能减排与轻量化需求，铝合金产品日益受到重视。通过实验与数值模拟方法研究了5754-H111铝合金板材在室温下的成形性能。通过刚模胀形实验，测试获得了成形极限图（FLD），其中平面应变条件下极限应变为0.174。并通过单拉、拉深及胀形实验，得到更实用的板材简易成形极限应力图（FLSD）。根据应变路径的变化，结合有限元模拟得到了FLD预测值，模拟结果与实验结果吻合较好，证明了该方法在预测板材成形极限上的准确性。

In order to adapt to the demand of energy conservation, emission reduction and lightweight, the products of aluminum alloy have been gaining more attention in recent years. By means of experiment and numerical simulation, the formability of 5754-H111 aluminum alloy sheet at room temperature was measured. The forming limit diagram (FLD) was obtained through bulging experiment and test. The limit strain under plane strain condition is 0.174. By the experiments of tensioning, deep drawing, and bulging, the simple forming limit stress diagram (FLSD) of sheet which is more practical was obtained. By using the method of changing strain path and FEM simulation, the predicted value of FLD was obtained. It is proved that the method has a good accuracy on predicting sheet forming limit by comparing the simulated FLD with the experimental one.

基金项目：

国家自然科学基金资助项目(51175335);教育部项目(311017)

刘振勇（1986-），男，硕士研究生

参考文献：

[1]张利,刘雪峰.汽车用高强铝合金材料研究[J].重庆工学院学报,2000,14(1):34-39.

Zhang Li, Liu Xuefeng, Study on high-strength aluminum alloy materials for automobile [J]. Journal of Chongqing Institute of Technology Management, 2000, 14(1):34-39.

[2]Keeler s p, Backofen W A. Plastic instability and fracture in sheets stretched over rigid punches [J].Trans. ASM,1965,5(6):25-48.

[3]Goodwin G M. Application of strain analysis to sheet metal forming problems in the press shop [J]. Transactions Society of Automotive Engineering, 1968,60(8):767-774.

[4]于忠奇,杨玉英,王永志,等.基于韧性断裂准则的铝合金板材成形极限预测[J].中国有色金属学报,2003, 13(5):1224-1226.

Yu Zhongqi, Yang Yuying, Wang Yongzhi, et al. Application of ductile fracture criterion to prediction of forming limit in aluminum alloy sheet forming[J].The Chinese Journal of Nonferrous Metals, 2003, 13(5):1224-1226.

[5]Barlat,Lian. Plastic behavior and stretch ability of sheet metals Part I: A yield function for onthotropic sheet under plane stress conditions[J]. Int. J. Plasticity,1989,5(1):51-66.

[6]Mamusi, Hossein, Masomi, et al. A novel numerical method to obtain forming limit diagrams of tailor-welded blanks[J].Journal of Materials Engineering and Performance, 2000,99(1):145-153.

[7]Rasoul S K, Hassan M N, Gholamhosein L. Forming limit diagram prediction of tailor-welded blank using experimental and numerical methods[J]. Journal of Materials Engineering and Performance, 2012, 21(10):2053-2061.

[8]黄华.高强铝合金板材温热成形实验与理论研究[D].上海:上海交通大学,2010.

Huang Hua. Experimental and Theoretical Investigation of Warm Forming of High-strength Aluminum Alloy Sheet [J]. Shanghai: Shanghai Jiao Tong University, 2010.

[9]陈亮，余心宏，翟妮芝.铝合金板材胀形极限的数值模拟研究[J]. 锻压装备与制造技术,2009，44（6）:94-97.

Chen Liang, Yu Xinhong, Zhai Nizhi, The Numerical simulation of bulging limit for aluminum alloy sheet[J]. Metalforming Equipment & Technology, 2009,44(6):94-97.

[10]GB/T15825.8-2008, 金属薄板成形性能与试验方法第8部分成形极限图(FLD)测定指南[S].

GB/T15825.8-2008, Sheet metal formability and test methods Part 8: Guidelines for the determination of forming-limit diagrams[S].

[11]马高山,万敏,吴向东.5A90铝锂合金热态下的成形极限图及其计算模型[J].中国有色金属学报,2008,44(5):246-248.

Ma Gaoshan, Wan Min, Wu Xiangdong. Forming limit diagram and calculating model for 5A90 Al-Li alloy sheet at elevated temperature [J]. The Chinese Journal of Nonferrous Metals, 2008, 44(5):246-248.

[12]胡世光,陈鹤峥，李东升,等.钣料冷压成形的工艺解析[M].北京：北京航空航天大学出版社，2009.

Hu Shiguang, Chen Hezheng, Li Dongsheng, et al. Coin Cold-press Forming Engineering Analysis [M].Beijing: Beijing University of Aeronautics and Astronautics Press, 2009.

[13]陈光南，胡世光.板材拉伸成形中损伤、失稳与成形极限曲线的建立[J].塑性工程学报,1994,1(1):31-36.

Chen Guangnan, Hu Shiguang. Damage, instability and construction of forming limit curve in sheet metal stretch forming [J].Journal of Plasticity Engineering, 1994,1(1):31-36.

[14]Situ Q, Bruhis M, Jain M K. A suitable criterion for precise determination of incipient necking in sheet materials [J]. Materials Science Forum,2006,(519):111-116.

服务与反馈：

【文章下载】【加入收藏】