Study on Cutting Simulation Deformation Behavior of NiTi Shape Memory Alloy
In this paper,ABAQUS is used to simulate the thermal mechanical load distribution of the chips and the processed surface layers of NiTi shape memory alloy at different cutting speeds and feed rates.The results indicate that the increase of cutting speed and feed rate will lead to the increase of chip temperature,plastic strain and damage.The cutting speed has great influence on the temperature,while the feed has obvious influence on the plastic strain and damage.The in-fluence of cutting speed on temperature is obvious,while the feed rate has an obvious influence on the plastic strain and damage.With the increasing of cutting speed,the temperature change rate of the machined surface layer is increased,the re-sidual stress is increased in the surface layer,but it's decreased in the deep layer.With the increasing of feed rate,the depth of strain layer and the residual stress are increased layer by layer.
万方数据
维普
