锻压技术

蛋盒型结构成形过程数值模拟研究

英文标题：Research on the egg-box structure forming process with numerical simulation

作者：王远臧勇李小龙

单位：北京科技大学

分类号：TG382

出版年,卷(期):页码：2017,42(10):51-56

摘要：

蛋盒型结构是一种轻质、高强、具有吸能特性的新型结构，其成形过程和最终成形形貌对性能有很大影响。首先描述了蛋盒型结构的成形过程及受力情况；随后运用Abaqus/Explicit软件对典型蛋盒型结构的成形过程进行了模拟，得到了成形极限高度时的形貌、减薄率、成形力等；最后分别分析了凸模结构参数、摩擦系数对蛋壳型结构成形结果的影响规律。研究表明：凸模半径的增加会增大成形力及成形极限高度，摩擦系数的作用会使最大减薄位置由凸模顶点位置向外移动；当选用凸模半径为周期间距的1/5时，摩擦系数在0.1~0.15之间时成形效率较高。

The egg-box structure is a novel structure with lightweight, high strength and excellent energy absorption characteristics, and its forming process and final shape have great influence on its performance. At first, the forming process and force condition of the eggbox structure were described briefly, and the forming process of the typical egg-box structure was simulated by the Abaqus/Explicit software. Then, the final shape, reduction rate and forming force at the limit forming height were obtained. Finally, the influences of punch structural parameters and friction coefficient on the forming process of the egg-box structure were studied respectively. The results show that the limit forming height and forming force are both increased with the increasing of punch radius, and the maximum thinning position moves outward from the punch vertex by changing the friction coefficient. Thus, when the selected punch radius is 1/5 times of the period spacing and the friction coefficient is between 0.1 and 0.15, the forming efficiency is best.

基金项目：

中央高校基本科研业务费（FRF-TP-16-010A3）；工信部2016年智能制造综合标准化与新模式应用项目：装备复杂零部件个性化快速定制智能制造新模式

作者简介：王远（1989-），男，博士研究生，E-mail：b20120344@xs.ustb.edu.cn；通讯作者：臧勇（1963-），男，硕士，教授，博士生导师，E-mail：yzang@ustb.edu.cn

参考文献：

[1]Ashmead M. Energyabsorbing structure[P]. US:6908143B2,2005-06-21.

[2]彭迎风, 辛勇. 多孔结构材料在汽车碰撞安全中的应用研究[J]. 中国制造业信息化: 学术版, 2006, 35(2): 54-58.

Peng Y F, Xin Y. The application of the cellular materials in automobile crashsafety[J]. Manufacturing Information Engineering of China, 2006, 35(2):54-58.

[3]Deshpande V S, Fleck N A. Energy absorption of an eggbox material[J]. Journal of the Mechanics and Physics of Solids, 2003, 51(1): 187-208.

[4]Zupan M, Chen C, Fleck N A. The plastic collapse and energy absorption capacity of eggbox panels[J]. International Journal of Mechanical Sciences, 2003, 45(5): 851-871.

[5]Yoo S H, Chang S H, Sutcliffe M P F. Compressive characteristics of foamfilled composite eggbox sandwich panels as energy absorbing structures[J]. Composites Part A: Applied Science and Manufacturing, 2010, 41(3): 427-434.

[6]Haldar A K, Zhou J, Guan Z. Energy absorbing characteristics of the composite contouredcore sandwich panels[J]. Materials Today Communications, 2016, 8: 156-164.

[7]Sashikumar S, Chirwa E C, Myler P, et al. Numerical investigation into the collapse behaviour of an aluminium eggbox under quasistatic loading[J]. International Journal of Crashworthiness, 2012, 17(6): 582-590.

[8]张守茁, 席镇, 孙海花,等. 球形凸模胀形时摩擦应力分布的理论计算、分析与实验验证[J]. 塑性工程学报, 2006, 13(5):96-99.

Zhang S Z, Xi Z, Sun H H, et al. Experiment and analysis about friction stress distributed in processes of punch bulging[J]. Journal of Plasticity Engineering, 2006,13(5):96-99.

[9]曹增强, 胡世光. 半球形拉深件成形研究[J]. 精密成形工程, 1990, (2):35-39.

Cao Z Q, Hu S G. Forming process of hemispherical drawing parts[J]. Metal Forming Technology, 1990, (2):35-39.

[10]于晓东, 冯再新, 刘桂花. 曲面零件冲压成形的力学分析[J]. 热加工工艺, 2012, 41(11):113-115.

Yu X D, Feng Z X, Liu G H. Mechanical analysis of stamping forming for curved surface parts[J]. Hot Working Technology, 2012,41(11):113-115.

[11]赵希禄. 半球形零件成形的应力分界圆[J]. 精密成形工程, 1993, (3):119-123.

Zhao X L. Stress boundary circle of hemispherical parts forming process[J]. Metal Forming Technology, 1993, (3):119-123.

[12]王列亮, 郑燕萍. 基于CAE的铝合金板料冲压成形中摩擦特性研究[J]. 锻压技术, 2015, 40(8):114-119.

Wang L L, Zheng Y P. Research on friction characteristics in aluminum alloy sheet stamping based on CAE[J]. Forging & Stamping Technology, 2015, 40(8)：114-119.

[13]庄茁. ABAQUS有限元软件6.4版入门指南[M]. 北京：清华大学出版社, 2004.

Zhuang Z. Guide of ABAQUS Finite Element Software Verison 6.4[M]. Beijing: Tsinghua University Press, 2004.

[14]Hooputra H, Gese H, Dell H, et al. A comprehensive failure model for crashworthiness simulation of aluminium extrusions[J]. International Journal of Crashworthiness, 2004, 9(5):449-464.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】