STUDY ON THE APPLICABILITY OF COUPLED EULERIAN-LAGRANGIAN FORMULATION IN ABRASIVE WATERJET MACHINING SIMULATIONS

Authors

  • Christos D. Dimopoulos National Technical University of Athens (NTUA), Greece
  • Nikolaos E. Karkalos National Technical University of Athens (NTUA), Greece
  • Angelos P. Markopoulos National Technical University of Athens (NTUA), Greece

DOI:

https://doi.org/10.20998/2078-7405.2019.91.04

Keywords:

Abrasive Waterjet Machining, Finite Element Method, Coupled Eulerian-Lagrangian Formulation.

Abstract

Non-conventional machining processes are considered as reliable alternatives to the established conventional ones in the case of processing of difficult-to-cut materials. Especially, Abrasive Waterjet Machining (AWJM) is advantageous for this purpose, as it can handle a wide range of workpiece materials and does not cause heat affected zones. In order to study the phenomena occurring during AWJM, numerical simulations should be carried out along with experiments. As machining processes involve significant material deformation, Coupled Eulerian-Lagrangian (CEL) Finite Elements (FE) models have been proven significantly accurate for this purpose, compared to pure Lagrangian models. Thus, in the present study it is attempted to compare the predicted results of CEL and pure Lagrangian models in the case of AWJM and determine whether this method is applicable for the process or not. Simulation cases based on experimental results are employed and discussion on the predicted cutting zone dimensions, stress and temperature field is conducted.

Author Biographies

Christos D. Dimopoulos, National Technical University of Athens (NTUA)

National Technical University of Athens (NTUA), Department of Manufacturing Technology

Nikolaos E. Karkalos, National Technical University of Athens (NTUA)

National Technical University of Athens (NTUA), Department of Manufacturing Technology

Angelos P. Markopoulos, National Technical University of Athens (NTUA)

Professor (Assistant), National Technical University of Athens (NTUA), Department of Manufacturing Technology, PhD

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Published

2019-08-31

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