锻压技术

柔性夹钳拉形力加载与位移加载的数值模拟

英文标题：Numerical simulation of load force and load displacement inflexible clamp stretch forming

作者：彭赫力李明哲赵毕艳杨学勤罗志强

分类号：TG386;TG306

出版年,卷(期):页码：2014,39(9):127-130

摘要：

阐述了柔性夹钳拉形原理，介绍了柔性夹钳拉形机的结构特点和夹钳运动的特点。基于有限元分析软件ABAQUS，建立了柔性夹钳拉形有限元模型。采用力加载和位移加载2种加载方式对球形件柔性夹钳拉形过程进行数值模拟，对2种加载方式下球形件的轮廓形状、拉伸应变和厚度差进行了对比分析。数值模拟结果表明，力加载和位移加载得到的成形结果基本一致，都能用于柔性夹钳拉形。以球形件为例在柔性夹钳拉形机上进行拉形实验，球形成形件表面光洁、轮廓形状好，验证了柔性夹钳拉形的可行性。

The principle of flexible clamp stretch forming was expounded, and the structural features of flexible clamp stretch forming machine and the moving characteristics of clamp were described. The finite element model of flexible clamp stretch forming was set up based on the analysis software ABAQUS. The numerical simulations of flexible clamp stretch forming process for spherical part were conducted using load force and load displacement, respectively. Further, the outline shape，stretching strain and thickness difference of the spherical parts under two load methods were compared and analyzed. The results show that the forming results under load force and load displacement are roughly in agreement, so both can be used in flexible clamp stretch forming. The forming experiment of spherical parts was carried out on flexible clamp stretch forming machine which results in smooth surface and good shape, and finally verifies the feasibility of flexible clamp stretch forming.

基金项目：

欧盟第六框架国际合作项目 (ASTS-CT -2006-030877)

彭赫力（1986-），男，博士，工程师

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