施加反拉力的超声振动拉丝过程仿真  

Simulating wire drawing process with ultrasonic vibration imposed on anti-pull

作　　者：吴丽君[1] 齐海群[2] 单小彪[3] 宋晓国[2] 王丽雪[2] 尹志娟[2] 

机构地区：[1]黑龙江工程学院计算机科学与技术学院,黑龙江哈尔滨150050 [2]黑龙江工程学院材料与化学工程学院,黑龙江哈尔滨150050 [3]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001

出　　处：《黑龙江工程学院学报》2012年第3期49-54,共6页Journal of Heilongjiang Institute of Technology

基　　金：黑龙江省教育厅科学基金项目(11551392)

摘　　要：基于库伦摩擦模型和非局部摩擦模型对超声振动拉拔钛合金丝材的全过程进行有限元分析,分析结果表明:当反拉力小于临界反拉力时,拉拔应力基本保持不变,当反拉力超过临界反拉力时,拉拔应力迅速增加。在拉丝过程中施加临界反拉力可以在保持拉拔应力基本不变的情况下,减径区接触压应力和摩擦应力均有一定程度减小,且在非局部摩擦模型下所得结果比常规摩擦模型下所得结果误差要小。Two kinds of finite element are built based on the Kulun friction law and non-local friction law. Through the simulation of titanium alloy wire-drawing process,the results indicate that when the anti-pull is less than the critical anti-pull, the portrait drawing stress is not changing, and the critical anti-pull can reduce the friction on the wire surface without changing the portrait drawing stress and also get that the results based on non-local friction law is more precise than on Kulun friction law.

关 键 词：超声振动 拉丝 反拉力 非局部摩擦 有限元分析 

分 类 号：TB55[理学—物理]