Finite element analysis of multi-particle impact on erosion in abrasive water jet machining of titanium alloy

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS

卷:236

Article

Kumar, Naresh²  Shukla, Mukul^1,2 

[1] Univ Johannesburg, Dept Mech Engn Technol Sci, Johannesburg, South Africa

[2] Motilal Nehru Natl Inst Technol, Dept Mech Engn, Allahabad 211004, Uttar Pradesh, India

关键词: Finite element method/analysis;    Abrasive water jet machining;    Titanium alloy;    Impact;    Crater sphericity;   

DOI  :  10.1016/j.cam.2012.04.022

来源: Elsevier

【 摘 要 】

Abrasive water jets (AWJs) are finding growing applications for machining a wide range of difficult-to-machine materials such as titanium alloys, stainless steel, metal matrix and fibre reinforced composites, etc. Current applications of AWJs include machining of Titanium alloys for aircraft components and bio-medical implants to removal of aircraft engine coatings. This paper presents the application of an elasto-plastic model based explicit finite element analysis (FEA) to model the erosion behaviour in abrasive water jet machining (AWJM). The novelty of this work includes FE modelling of the effect of multiple (twenty) particle impact on erosion of Grade 5 Titanium alloy (Ti-6AI-4V). The influence of abrasive particle impact angle and velocity on the crater sphericity and depth, and erosion rate has been investigated. The FE model has been validated for stainless steel and yields largely improved results. Further, the same FEA approach has been extended to model the multi-particle impact erosion behaviour of Titanium alloy. (C) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

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