Abstract：The problem of the micro-static contact behavior between the abrasive grains and the workpiece, the surface features of the abrasive belt are collected and reconstructed. Based on the Hertzian contact theory, a theoretical model involving parameters of grinding pressure, indentation depth, grains’ lip-end curvature radius and attack angle is established to illustrate the static contact behavior. The distribution rule of the contact area and the contact stress between the abrasive grains and the workpiece surface is obtained. Then, the finite element simulation is conducted to validate the theoretical model through analyzing contact stress, contact area and indentation depth under different grinding pressure. The results show that the simulated values are in good agreement with the theoretical values within a limited error range, which prove the correctness and the validity of the theoretical model. It can be seen that the contact stress, the contact area and the indentation depth increase along with the growth of grinding pressure and become stable when it reaches 250 N. Meanwhile, the number of contact abrasive grains also gradually increases and stabilizes.
李建勇,程继发,樊文刚,吕洪宾. 砂带磨削静态接触理论建模与有限元仿真[J]. 北京交通大学学报, 2018, 42(6): 125-.
LI Jianyong, CHENG Jifa, FAN Wengang,LYU Hongbin. Theory modeling and finite element simulation of belt grinding static contact. Beijing Jiaotong University, 2018, 42(6): 125-.