基于SPH方法的钛合金切削仿真分析

Simulation Analysis of Titanium Alloy Cutting Based on the SPH Method

运用SolidWorks、hypermesh和ls-prepost软件建立了切削仿真模型,基于光滑流体动力学方法对Ti6Al4V钛合金切削进行了仿真,对切屑形成过程以及切削力进行了分析。仿真分析结果表明:SPH方法解决了切削仿真过程中的网格畸变造成的无法求解问题,同时,切削仿真锯齿形切屑形貌与试验相一致,验证了SPH方法切削仿真的有效性。从而为进一步研究钛合金切削机理以及优化切削参数提供了理论支持。

A model of cutting simulation was established with the Solidworks,hypermesh and ls-prepost software in this paper.The process of Ti6Al4V Titanium alloy cutting was simulated based on the smoothed particle hydrodynamics method;the process of chip formation and cutting force were analyzed.The results show that the SPH method avoid the element distortion problem which always occurs in the process of cutting simulation,and the shape of serrated chip in cutting simulation also is consistent with the test,thus the validity of the cutting simulation is verified by means of the SPH method.Therefore,this research provides a theoretical support for the further study on the cutting mechanism of Titanium alloy and optimization of the cutting parameters.