中国机械工程2024，Vol.35Issue(9)：1667-1676,10.DOI:10.3969/j.issn.1004-132X.2024.09.017
水平振动式滚磨光整加工残余应力离散元-有限元耦合仿真与实验研究
DEM-FEM Coupled Simulation and Experimental Study of Residual Stresses in Horizontal Vibratory Finishing Processes
摘要
Abstract
To investigate the influences of horizontal vibratory finishing on the residual stress of part surfaces,a coupled DEM-FEM simulation method applicable to dynamic parts was proposed.The particle motion states and the changes of average contact force among particles were analyzed during the vibration cycle,and a random contact model between particles and parts was constructed to carry out the simulation of residual stresses of vibratory finishing with different vibration parameters,and experimental validation was carried out.The results show that with the increase of vibration intensity,the particle motions in the container are more intense,and the probability of occurrence and the mean value of the effective normal contact force between the particles and the parts increases,resulting in an increasing trend of the residual compressive stress on the surfaces of the parts.The simulated and the experimental values of residual stress show the same response trends to the vibration parameters,with the errors ranging from 3.6％to 11.3％.关键词
离散元-有限元/水平振动式滚磨光整加工/残余应力/颗粒运动/随机接触模型Key words
discrete element method-finite element method(DEM-FEM)/horizontal vibratory finishing/residual stress/particles motion/random contact model分类
矿业与冶金引用本文复制引用
田涛,李文辉,温学杰,李秀红,杨胜强..水平振动式滚磨光整加工残余应力离散元-有限元耦合仿真与实验研究[J].中国机械工程,2024,35(9):1667-1676,10.基金项目
国家自然科学基金(51975399,52075362,51875389) （51975399,52075362,51875389）
中央引导地方科技发展资金(YDZJSX2022A020,YDZJSX2022B004) （YDZJSX2022A020,YDZJSX2022B004）
