On the erosion process on quartz crystals by the impact of multiple high-velocity micro-particles

被引：26
|
作者：
Qi, Huan [1 ,2 ]
Fan, Jingming [1 ]
Wang, Jun [1 ]
Li, Huaizhong [3 ]
机构：
[1] Univ New S Wales, UNSW Australia, Sch Mech & Mfg Engn, Sydney, NSW 2052, Australia
[2] Zhejiang Univ Technol, Minist Educ, Key Lab Special Purpose Equipment & Adv Proc Tech, Hangzhou 310014, Zhejiang, Peoples R China
[3] Griffith Univ, Sch Engn, Gold Coast Campus,Parklands Dr, Southport, Qld 4214, Australia
来源：
TRIBOLOGY INTERNATIONAL | 2016年 / 95卷
关键词：
Impact erosion; Abrasive jet machining; Subsurface damage; Discrete element; DISCRETE ELEMENT METHOD; NUMERICAL-SIMULATION; DUCTILE; BEHAVIOR; STEELS; GLASS; WEAR;
D O I：
10.1016/j.triboint.2015.12.003
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A computational model using the discrete element method is presented to investigate the impact process of multiple micro-particles on a quartz crystal. It is shown that the impacts initiate median and lateral cracks that degrade the strength of the substrate material and facilitate material removal in subsequent impacts. Elemental materials are removed through breaking their contacts with all adjacent elements by crack propagation and intersection. A larger overlapping impact condition between two impacts is more efficient for material removal in the second impact, but a total overlap does not yield the maximum material removal. The number of micro-cracks and the thickness of the cracked layer left on the eroded specimen are also studied in relation to the impact conditions. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：462 / 474
页数：13
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