表面技术2018，Vol.47Issue(1)：8-15,8.DOI:10.16490/j.cnki.issn.1001-3660.2018.01.002
基于CFD-DEM仿真的喷丸工艺参数优选
Optimization of Shot Peening Process Parameters Based on CFD-DEM Simulation
摘要
Abstract
This work aims to select optimal shot peening process parameters so as to realize the minimum shot peening time and maximum energy efficiency by considering energy efficiency of shot peening process as a whole. Material removal volume during random shooting was obtained by analyzing arrangement of projectile group in one symmetry cell model and average crater area formed by each projectile when certain coverage was reached, and energy utilization efficiency was further obtained. With shot peening inlet pressure, projectile diameter and projectile flow rate as variables, were taken as process variables, an op-timization model was established for shot peening process parameters to minimize shot peening time and maximize energy effi-ciency at certain coverage rate. A coupling gas-solid CFD-DEM simulation model was established for shot peening to obtain re-lationship between outlet projectile velocity and process parameters. Sixteen groups of simulation experiments showed that process parameters of the 4thgroup were the optimal combination of shot peening parameters: inlet pressure intensity of 0.5 MPa, projectile diameter of 1.0 mm, and projectile flow rate of 0.6 kg/s. This simulation model can establish the relationship between outlet projectile velocity and other process parameters, and the optimization model can allow for both efficiency and energy utilization rate, select optimal combination of shot peening process parameters and provide guidance for decision making regarding shot peening parameters.关键词
喷丸/CFD-DEM耦合/覆盖率/工艺参数Key words
shot peening/CFD-DEM coupling/coverage rate/process parameter分类
矿业与冶金引用本文复制引用
刘雪梅,顾佳巍,祁国栋,杨连生,李爱平..基于CFD-DEM仿真的喷丸工艺参数优选[J].表面技术,2018,47(1):8-15,8.基金项目
上海市科学技术委员会科研计划项目(14111104400)Supported by the Shanghai Science and Technology Commission Scientific Research Project (14111104400) （14111104400）
