锻压技术

SUS304/Al1050/SUS430复合叠层板拉深成形中筒壁起皱机理

英文标题：Wrinkling mechanism of tube wall in deep drawing process for composite laminated plate SUS304/Al1050/SUS430

作者：胡垚章争荣董勇蒋小丹张军

单位：广东工业大学

关键词：SUS304/Al1050/SUS430复合板圆筒件拉深起皱有限元模拟材料流动速度

分类号：TB331

出版年,卷(期):页码：2018,43(7):140-146

摘要：

实际生产过程中发现SUS304/Al1050/SUS430复合板在拉深成形时外筒壁存在起皱的现象。为了分析这一现象产生的原因，分别测试了各单层板和复合板的真实应力、应变，并通过ETA/Dynaform软件对复合板圆筒件拉深成形过程进行了数值模拟。结果表明：复合板与轧制方向成90°方向的材料流动速度最快，与轧制方向成45°方向的材料流动速度最慢，且层与层之间Al1050层的材料流动速度大于SUS430层。以上两种材料流动速度的差异是导致SUS430层在拉深成形过程中与轧制方向成90°方向出现堆积起皱现象的原因，YBT拉伸实验也验证了这一结论。

During the actual production process, the wrinkling phenomenon on the outer wall of cylinder for composite plate SUS304/Al1050/SUS430 occurs in the deep drawing process. In order to analyze the cause of this phenomenon, the true stress-strain distributions of each single-layer plate and composite plate were tested respectively, and the deep drawing process of cylinder part for composite plate was simulated by software ETA/Dynaform. The results show that the material flow velocity of composite plate along the direction perpendicular to the rolling direction is the fastest, and along the 45° direction to the rolling direction is the slowest. However, the material flow velocity of Al1050 layer between layers is higher than that of SUS430 layer. Thus, the difference in the flow velocity of two kinds of materials results in the accumulation and wrinkling of SUS430 layer along the direction perpendicular to the rolling direction in the deep drawing process, and the YBT tensile test also verifies this conclusion.

基金项目：

佛山市科技创新专项资金项目（2013GQ100413）

胡垚（1992-），男，硕士研究生，E-mail：1039640837@qq.com；通讯作者：章争荣（1969-）男，博士，教授，硕士生导师，E-mail：zzr@gdut.edu.cn

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