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Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2016, Vol. 17 Issue (11): 873-885    DOI: 10.1631/jzus.A1600023
Articles     
Chip morphology predictions while machining hardened tool steel using finite element and smoothed particles hydrodynamics methods
Usama Umer, Jaber Abu Qudeiri, Mohammad Ashfaq, Abdulrahman Al-Ahmari
Princess Fatima Alnijiris's Research Chair for Advanced Manufacturing Technology (FARCAMT), Advanced Manufacturing Institute, King Saud University, Riyadh, Saudi Arabia; Industrial Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia
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Abstract  Chip morphology predictions in metal cutting have always been challenging because of the complexity of the various multiphysical phenomena that occur across the tool-chip interface. An accurate prediction of chip morphology is a key factor in the assessment of a particular machining operation with regard to both tool performance and workpiece quality. Although finite element (FE) models are being developed over the last two decades, their capabilities in modeling correct material flow around the tool tip with shear localization are very limited. FE models with an arbitrary Lagrangian Eulerian () approach are able to simulate correct material flow around the tool tip. However, these models are unable to predict any shear localization based on material flow criteria. On the other hand, FE models with a Lagrangian formulation can simulate shear localization in the chip segments; they need to make use of a mesh-based chip separation criterion that significantly affects material flow around the tool tip. In this study a mesh-free method viz. smoothed particles hydrodynamics (SPH) is implemented to simulate shear localization in the chip while machining hardened steel. Unlike other SPH models developed by some researchers, this model is based on a renormalized formulation that can consider frictional stresses along the tool-chip interface giving a realistic chip shape and material flow. SPH models with different cutting parameters are compared with the traditional FE models and it has been found that the SPH models are good for predicting shear localized chips and do not need any geometric or mesh-based chip separation criteria.

Key wordsChip morphology      Finite element (FE)      Smoothed particles hydrodynamics (SPH)      Hardened tool steel      Serrated chips     
Received: 18 January 2016      Published: 03 November 2016
CLC:  TG58  
Cite this article:

Usama Umer, Jaber Abu Qudeiri, Mohammad Ashfaq, Abdulrahman Al-Ahmari. Chip morphology predictions while machining hardened tool steel using finite element and smoothed particles hydrodynamics methods. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2016, 17(11): 873-885.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1600023     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2016/V17/I11/873

[1] Hui LUO, Hong-ping ZHU, Yu MIAO, Chuan-yao CHEN. Simulation of top-down crack propagation in asphalt pavements[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2010, 11(3): 223-230.
[2] F. VAKILI-TAHAMI, A. H. DAEI-SORKHABI, M. A. SAEIMI-S, A. HOMAYOUNFAR. 3D finite element analysis of the residual stresses in butt-welded plates with modeling of the electrode-movement[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(1): 37-43.
[3] Jun-sheng CHEN, Hai-hong MO. Mechanical behavior of segment rebar of shield tunnel in construction stage[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(7): 888-899.
[4] RAHMAN M.M., ARIFFIN A.K., JAMALUDIN N., HARON C.H.C.. Influence of surface treatments on fatigue life of a two-stroke free piston linear engine component using random loading[J]. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2006, 7(11): 5-.