Numerical Simulation and Cutting Force Optimization of Laser-Assisted Cutting Carbon Nanotube Aluminum Matrix Composites
Aiming at the poor machinability and large tool wear during the processing of carbon nanotube aluminum matrix composites(CNTs/AL),a laser assisted processing method was proposed to improve the process.ABAQUS finite element simulation software was used to conduct simulation studies on the surface damage forms,sub-surface residual stress distribution and cutting forces of CNTs/AL composites,in order to complete the feasibility verification of laser-assisted processing of CNTs/AL.The relationship between cutting force and machining parameters is analyzed based on response surface experiment,and a cutting force model with good fitting degree is established.The results show that the laser assisted machining can effectively reduce the cutting force and surface quality,the average cutting force is reduced by 34%,but the residual stress is slightly increased.The influence of three process parameters on the cutting force is as fol-lows:laser power,cutting speed and cutting depth.
finite elementlaser-assisted cuttingaluminum matrix compositescutting force