摘要
基于弹塑性有限元法对零件镦粗过程进行模拟,揭示镦粗时金属的变形、应力应变场、温度场及镦粗力的分布及变化情况,探讨工艺参数对荷载的影响规律,以及不同压下率、摩擦因数及高径比下坯料金属的流动特征。研究结论对制定与优化镦粗时的参数具有参考价值。
The cold upsetting process of workpiece was simulated by using elastic-plastic finite element method. Metal deformation, distributions of stress, strain and temperature fields, upsetting force were discovered. The effect of the parameters on upsetting load, and the property of metal flow were discussed under the conditions of different reduction rate, friction factor and height-diameterratio. The results are useful to the design and optimization of parameters in the upsetting process.
出处
《机床与液压》
北大核心
2012年第21期23-25,68,共4页
Machine Tool & Hydraulics
基金
国家自然科学基金资助项目(51004047)
湖南省自然科学基金资助项目(09JJ4024)
湖南省高校优秀青年基金资助项目(10B020)
关键词
冷镦粗
数值仿真
塑性大变形
热力耦合
Cold upsetting
Numerical simulation
Large plastic deformation
Thermo-mechanical coupling
