Finite element model of erosive wear on ductile and brittle materials
Finite element model of erosive wear on ductile and brittle materials
复制标题
DOI：
10.1016/j.wear.2008.01.014
复制
发表时间：
2008-08-25
期刊：
影响因子：
5
通讯作者：
Yang, Zhen-Guo
中科院分区：
文献类型：
--
作者：
Wang, Yu-Fei;Yang, Zhen-Guo
材料失效通常是由腐蚀、磨损和机械损伤引起的。根据以往的研究，在工业生产中，冲蚀磨损约占常规磨损的8%。简要介绍了脆性材料和延性材料的冲蚀磨损机理。总结了冲刷的数值计算方法。建立了一种全新的冲蚀磨损通用有限元模型。较详细地描述了Johnson-Cook和Johnson-Holmquist材料模型以及在有限元模型中使用的相应状态方程。利用有限元模型，分别以延性材料和脆性材料为例，模拟了撞击角、撞击速度和颗粒侵彻对靶板的影响。计算结果表明，计算结果与已有的实验结果和分析模型的计算结果基本一致。本研究对冲蚀磨损的研究具有一定的参考价值。(C)2008爱思唯尔B.V.保留所有权利。
Materials failure is usually caused by corrosion, wear and mechanical damage. According to previous research, erosion wear holds about 8% of the regular wear in industrial production. In this study, the mechanism of erosive wear on brittle and ductile materials is briefly introduced. The numerical methods of erosion have been summarized. A brand new universal finite element (FE) model of erosive wear was established. The Johnson-Cook and Johnson-Holmquist materials model and the corresponding equation of state used in the FE model were described in more details. Utilizing the FE model, two examples of ductile materials and brittle materials were employed to simulate the effect of the impact angle, impact velocity and particles penetration on the targets. It is shown that the predicted results are in agreement with published results obtained experimentally and from analytical erosion models. The present study could be useful and efficient in studying erosive wear. (C) 2008 Elsevier B.V. All rights reserved.