Numerical Simulation of Derusting Treatment of Steel Parts By Shot Blast  

作　　者：Zhe Li Fan Yang Yaping Liu Yukui Gao 

机构地区：[1]School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai,200092,China

出　　处：《Computer Modeling in Engineering & Sciences》2019年第7期157-175,共19页工程与科学中的计算机建模（英文）

基　　金：This work was supported by National Natural Science Foundation of China under Grant 11772231;Innovation Program of Shanghai Municipal Education Commission under Grant 15zz018;the Fundamental Research Funds for the Central Universities under Grant 1500219095,and Shanghai Supercomputer Center.

摘　　要：In this paper,we investigated the shot blast treatment for derusting application through finite element(FE)simulations with a large number of random shots.The element deletion technique based on dynamic failure criteria was used to model the removal of rust.The cohesive surface model with damage evolution was used to characterize the decohesion of the rust/substrate interface.The effects of various processing and material parameters on the derusting effectiveness were examined.The results show that the rate of derusting mainly depends on the shot size,velocity and impinging angle,with little relevance to the rust thickness.The spalling of the rust fragments resulted from the decohesion of the rust/substrate interface were observed,especially during the later stage of the treatment.Furthermore,the residual stress and the surface roughness was also investigated and the beneficial effects of shot blast treatment in terms of these aspects were highlighted.

关 键 词：Shot BLAST RUST removal COHESIVE surface FINITE ELEMENT 

分 类 号：TD4[矿业工程—矿山机电]