An implicit algorithm based on continuous moving least square to simulate material mixing in friction stir welding process

Authors:
Abdelaziz Timesli;Bouazza Braikat;Hassane Lahmam;Hamid Zahrouni
Affiliations:
Faculte des Sciences Ben M'Sik, Université Hassan II Mohammedia-Casablanca, Sidi Othman, Casablanca, Morocco and Laboratoire d'Etude des Microstructures et de Mécanique des Matériau ...;Faculte des Sciences Ben M'Sik, Université Hassan II Mohammedia-Casablanca, Sidi Othman, Casablanca, Morocco;Faculte des Sciences Ben M'Sik, Université Hassan II Mohammedia-Casablanca, Sidi Othman, Casablanca, Morocco;Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux LEM3, CNRS UMR 7239, Université de Lorraine, Metz Cedex 01, France
Venue:
Modelling and Simulation in Engineering
Year:
2013

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Abstract

An implicit iterative algorithm, based on the continuous moving least square (CMLS), is developed to simulate material mixing in Friction Stir Welding (FSW) process. Strong formulation is chosen for the modeling of the mechanical problem in Lagrangian framework to avoid the drawback of numerical integration. This algorithm is well adapted to large deformations in the mixing zone in the neighborhood of the welding tool. We limit ourselves to bidimensional viscoplastic problem to show the performance of the proposed implicit algorithm. The results show that the proposed algorithm can be employed to simulate FSW.