Numerical Modeling and Analysis of Ti6Al4V Alloy Chip for Biomedical Applications
| Autor: | Bashir Salah, Razaullah Khan, Rafiq Ahmad, Xavier Velay, Waqas Saleem, Catalin I. Pruncu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Technology Materials science COOK CONSTITUTIVE MODEL Materials Science SEGMENTATION Mechanical engineering Materials Science Multidisciplinary 02 engineering and technology Flow stress lcsh:Technology CUTTING-TOOL Article 09 Engineering 020901 industrial engineering & automation 0203 mechanical engineering Machining simulation of cutting processes General Materials Science Macro FLOW-STRESS SPEED lcsh:Microscopy TOOL LIFE Shearing (manufacturing) EDGE RADIUS lcsh:QC120-168.85 Commercial software Science & Technology lcsh:QH201-278.5 lcsh:T Ti6Al4V Titanium alloy Johnson-Cook Chip chip morphology 020303 mechanical engineering & transports WEAR lcsh:TA1-2040 TI-6AL-4V ALLOY TITANIUM lcsh:Descriptive and experimental mechanics TJ lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) 03 Chemical Sciences lcsh:TK1-9971 Surface integrity |
| Zdroj: | Materials Volume 13 Issue 22 Materials, Vol 13, Iss 5236, p 5236 (2020) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13225236 |
| Popis: | The influence of cutting forces during the machining of titanium alloys has attained prime attention in selecting the optimal cutting conditions to improve the surface integrity of medical implants and biomedical devices. So far, it has not been easy to explain the chip morphology of Ti6Al4V and the thermo-mechanical interactions involved during the cutting process. This paper investigates the chip configuration of the Ti6Al4V alloy under dry milling conditions at a macro and micro scale by employing the Johnson-Cook material damage model. 2D modeling, numerical milling simulations, and post-processing were conducted using the Abaqus/Explicit commercial software. The uncut chip geometry was modeled with variable thicknesses to accomplish the macro to micro-scale cutting by adapting a trochoidal path. Numerical results, predicted for the cutting reaction forces and shearing zone temperatures, were found in close approximation to experimental ones with minor deviations. Further analyses evaluated the influence of cutting speeds and contact friction coefficients over the chip flow stress, equivalent plastic strain, and chip morphology. The methodology developed can be implemented in resolving the industrial problems in the biomedical sector for predicting the chip morphology of the Ti6Al4V alloy, fracture mechanisms of hard-to-cut materials, and the effects of different cutting parameters on workpiece integrity. |
| Databáze: | OpenAIRE |
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