基于磨粒流加工细弯管内表面的数值模拟研究  

A study of the effect of inlet pressure on the inner surface of a fine elbow processed by an abrasive grain flow

作　　者：孟庆新 曹欣锐 MENG Qingxin;CAO Xinrui(AVIC Changchun Control Technology Co.Ltd.,Changchun 130102,China;School of Mechatronic Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]中国航发长春控制科技有限公司,吉林长春130102 [2]长春理工大学机电工程学院,吉林长春130022

出　　处：《长春工业大学学报》2024年第4期331-336,共6页Journal of Changchun University of Technology

基　　金：吉林省教育厅科学技术研究项目(JJKH20220734KJ);重庆市自然科学基金项目(CSTB2022NSCQ-MSX0602)。

摘　　要：细弯管在汽车发动机领域是重要零部件,传统加工质量较差,因此采用磨粒流精密加工细弯管。为分析入口压力与磨料浓度对磨粒流加工细弯管内表面的影响,以细弯管为研究对象,对固液两相磨粒流加工过程进行数值模拟分析。通过分析不同入口压力下细弯管内表面压力和壁面剪切力大小,发现随着入口压力的增大,细弯管内表面受到的压力逐渐增加。分析不同磨料浓度下细弯管内表面压力与壁面剪切力大小,发现随着磨料浓度的增大,细弯管内表面所受壁面剪切力与压力变化较小,磨料浓度对磨粒流加工细弯管影响较小。Fine bends are important parts in automobile engines and other fields,and the quality of traditional machining is poor,so the fine bends are precision machined by abrasive flow.In order to analyze the effects of inlet pressure and abrasive concentration on the inner surface of the fine elbow,the solid-liquid two-phase abrasive flow machining process is analyzed by numerical simulation with the fine elbow as the research object.By analyzing the size of the pressure and wall shear force on the inner surface of the pipe under different inlet pressures,it is found that the pressure and wall shear force on the inner surface of the pipe increase gradually with the increase of inlet pressure.By analyzing the size of the pressure and wall shear on the inner surface of the pipe under different abrasive concentrations,it is found that with the increase of abrasive concentration,the change of wall shear and pressure on the inner surface of the pipe is small,and the effect of abrasive concentration on the processing of the pipe by abrasive flow is small.

关 键 词：磨粒流加工 细弯管 质量控制 数值模拟 

分 类 号：TH164[机械工程—机械制造及自动化]