摘要
研究了激光辅助加热条件下钛合金Ti6Al4V的切削过程。采用高斯热源分布模型对激光加热钛合金的温度场进行了模拟,分析了激光功率、移动速度、光斑直径等加工参数对加工结果的影响。基于JohnsonCook本构模型和Johnson-Cook失效断裂准则,采用完全热力耦合有限元分析模型,对激光辅助正交车削钛合金Ti6Al4V进行了数值仿真研究。最后通过分析仿真结果,证实了激光辅助加工的有效性。
The process of laser-assisted-machining（LAM）of Ti6Al4 Vtitanium alloy is studied in this paper.A Gaussian distribution model is used to simulate the temperature field generated by the moving laser beam,and the influences of machining parameters such as laser power,moving speed and beam diameter are studied.Then a coupled temperature-displacement model based on the JohnsonCook material constitutive and damage law is used to simulate the orthogonal cutting process of Ti6Al4 V.Finally the obtained simulation results are analyzed and the LAM method is proven effective.
作者
王励豪
王武义
WANG Li-hao WANG Wu-yi(School of Mechatronics Engineering, Harbin Insthute of Technology, Harbin 150001, China)
出处
《机械工程与自动化》
2017年第1期34-36,共3页
Mechanical Engineering & Automation
关键词
激光辅助加工
钛合金
断裂准则
温度场
laser-assisted-machining
titanium alloy
damage law
temperature field
