锻压技术

铝合金方形管件液压胀形成形性的有限元模拟和实验研究

英文标题：Finite element simulation and experiment study on formability of hydro-forming for aluminum alloy square tube

作者：陆宏田世伟黄文刘庆国张璐赵利涛

分类号：TG315.4

出版年,卷(期):页码：2018,43(7):153-158

摘要：

管材液压胀形件的变形复杂，难以确定其最佳成形路径。着眼于A6063铝合金方形管件的液压胀形，探索可以提高其成形性的最佳加载路径。使用ABAQUS EXPLICIT 软件，对管材液压胀形过程进行有限元模拟，分析轴向和圆周方向的应变，假定管材在液压胀形中为平面应力状态，使用由S-R理论得出的FLD对不同应变路径下的管材液压胀形的成形性进行评价，并在此基础上确定最佳加载路径。为了验证理论结果的有效性，使用直径为Φ40 mm、厚度为2 mm的A6063铝合金管进行了实验研究，实验结果和理论预测基本一致。

The deformation of tube hydro-forming is complex, and it is difficult to determine the optimum loading path before production. Therefore, the hydro-forming of aluminum alloy A6063 square tube was studied, and the optimum loading path improving the formability was explored. Then, the tube hydro-forming process was simulated by software ABAQUS EXPLICIT, and the axial and circumferential strains were analyzed. Furthermore, assuming the tube under the plane stress state during the hydro-forming process, the formability of tube hydro-forming under different strain paths was evaluated by the FLD obtained from the S-R theory, and the optimal loading path was determined on this basis. Finally, the experiments of tube hydro-forming were conducted by aluminum alloy A6063 tubes with diameter of Φ40 mm and thickness of 2 mm to validate the validity of theoretical results, and the experiment results are in agreement with the theoretical prediction.

基金项目：

国家自然科学基金资助项目(51675466)；河北省科技计划项目（15211820）

陆宏(1962-)，女，博士，副教授，E-mail：honglu@ysu.edu.cn

参考文献：

[1]Ueda T. Differential gear casting for automobiles by liquid bulge forming process-Part 1[J]. Sheet Metal Industries-Metal Forming, 1983, 60(3): 181-185.

[2]Ueda T. Differential gear casting for automobiles by liquid bulge forming process-Part 2[J].Sheet Metal Industries-Metal Forming, 1983, 60(4):48-56.

[3]Tirosh J, Neuberger A，Shirizly A. On tube expansion by internal fluid pressure with additional compressive pressure[J]. International Journal of Mechanical Science, 1996, 38(8-9):829-851.

[4]Zhao L, Sowerby R, Sklad M P. A theoretical and experimental investigation of limit strains in sheet metal forming[J]. International Journal of Mechanical Science, 1996, 38(12):1307-1317.

[5]Xing H L, Makinouchi A. Numerical analysis and design for tubular hydroforming[J]. International Journal of Mechanical Science, 2001, 43(4):1009-1026.

[6]Nefussi G, Combescure A. Coupled buckling and plastic instability for tube hydroforming[J]. International Journal of Mechanical Science, 2002, 44(5)99-914.

[7]Yoshida K, Kuwabara T. Effect of strain hardening behavior on forming limit stresses of steel tube subjected to nonproportional loading paths[J]. International Journal of Plasticity, 2007, 23(7):1260-1284.

[8]Lei L P, Kang B S, Kang S J. Prediction of the forming limit in hydroforming processes using the finite element method and a ductile criterion[J]. Journal of Materials Processing Technology, 2001, 113(1):673-679.

[9]黄文，陆宏，于海波，等. 基于局部分叉理论的铝合金板材成形性预测研究[J].塑性工程学报，2017, 24（5）：68-73.

Huang W, Lu H, Yu H B, et al. Study of formability prediction for aluminum alloy sheet metal based on local bifurcation theory[J]. Journal of Plasticity Engineering，2017,24（5）：68-73.

[10]贾宇坤，罗建斌，李健，等. 轿车加强梁内高压成形规律的仿真研究 [J].锻压技术，2017, 42（2）：183-188.

Jia Y K，Luo J B，Li J, et al. Simulation study on the hydroforming regulation of reinforcing beam of car [J]. Forging & Stamping Technology，2017, 42（2）：183-188.

[11]李坤，杨连发，魏军，等. 新型管材冲击液压成形装置的设计 [J].锻压技术，2017, 42（6）：77-81.

Li K，Yang L F，Wei J，et al. Design on a new type of tube impact hydroforming equipment [J]. Forging & Stamping Technology，2017, 42（6）：77 -81.

[12]St-ren S, Rice J R. Localized necking in thin sheets [J]. Journal of Mechanics and Physics of Solids, 1975, 23(6):421-440.

服务与反馈：

【文章下载】【加入收藏】