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

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