Numerical simulation of hydrodynamic suspension polishing process using finite element and discrete element method
XIE Zhong, ZHU Sheng wei
(College of Mechanical Engineering, Zhejiang University of technology, Hangzhou 310014 China)


Abstract: Aiming at the process of particle impacting the workpiece involved in hydrodynamic suspension polishing.,the distribution of the residual stress along the depth direction was studied with respect to the different impact velocity and impact angle.The three dimensional finite element model that is to represent the single particle impact the surface of workpiece was onstructed by using ABAQUS. The velocity field during particles impacting the surface of workpiece was calculated. The three dimensional discrete element model of the particles impacting the surface of workpiece was developed by using PFC/3D. The results indicate that with the increasing of impact velocity and impact angle the pressure stress field was increased in the workpiece surface. The residual stress is decreased sharply along the depth direction and the largest residual stress in the workpiece surface. Considering the collision between abrasives in the fluid has not so big effect to the velocity field of particles impact the workpiece surface.
Key words: finite element method; residual stress; discrete element method; velocity distribution