锻压技术

径向锻造过程工件旋转振动分析

英文标题：Rotary vibration analysis of workpiece in radial forging process

作者：王志刚樊黎霞

单位：南京理工大学

关键词：径向锻造旋转振动有限元分析

分类号：TH122

出版年,卷(期):页码：2011,36(2):5-9

摘要：

径向锻造过程中，当锤头和工件接触时，工件逐渐进入停止状态，而当锤头完全脱离工件后，工件在弹性杆势能的作用下进入旋转振动状态，因此，选择合适刚度的弹性杆对工件的运动状态甚至工件加工质量具有十分重要的影响。结合解析法和有限单元法，对工件和弹性杆构成的旋转振动系统进行数学建模，分析了锻造过程中工件的旋转运动状态，并讨论了弹性杆扭转刚度的选取原则，从而为实际加工过程弹性杆的选取和设计提供理论依据。

During the radial forging process, the workpiece gradually becomes still while the hammer presses it. After the hammer moves up, the rotation movement of the workpiece goes to free vibration for the potential energy of the spring bars. The appropriate torsion stiffness of spring bars has a great effect on the vibration of the workpiece and the criteria of the stiffness are the key parameters in the radial forging process. The mathematical model was built for the rotation vibration system constituted by workpiece and spring bars combined with both mathematical analytical model and FEA model. And the movement of the workpiece was analyzed and the determination criteria of the torsion stiffness was discussed，which provided the theoretical basis to design of spring bar for the actual process.

基金项目：

2005年度兵器预研基金项目

参考文献：

［1］Yang S. Research into GFM forging machine[J]. Journal of Materials Processing Technology, 1991, 28: 307-319.
［2］Hojas H .GFM precision radial forging machines[R]. GFM Technical Literature, 1976.
［3］Lahoti G D, Altan T. Analysis of the radial forging process for manufacturing rods and tubes[J]. Journal of Engineering for Industry, 1976, 98: 265-271.
［4］Ghaei A, Taheri A K, Movahhedy M R. A new upper bound solution for analysis of the radial forging process[J]. International Journal of Mechanical Sciences, 2006, 48: 1264-1272.
［5］Tszeng T C, Kobayashi S. Determination of residual stresses in radial forging[J]. Manufacturing Simulation and Processes, 1986, 20: 31-45.
［6］Thompson E G, Hamzeh O, Jackman L A, et al. A quasi\|steady-state analysis for radial forging[J]. Journal of Materials Processing Technology, 1992, 34: 1-8.
［7］Abbas Ghaei, Mohammad R Movahhedy. Die design for the radial forging process using 3D FEM[J]. Journal of Materials Processing Technology, 2007, 182: 534-539.
［8］Mohammad R Movahhedy. A parametric study on residual stresses and forging load in cold radial forging process[J]. International Journal of Mechanical Sciences, 2007, 33: 7-17.
［9］Chen J, Chandrashekhara K, Richards V L, et al. Three-dimensional nonlinear finite element analysis of hot radial forging process for large diameter tubes[J]. Materials and Manufacturing Processes, 2010, 25: 669-678.
［10］庄新村，赵震，向华，等.ALE有限元法在金属塑性成形领域的研究进展[J]. 塑性工程学报，2008，15 (1): 1-6.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】