Title: Finite element simulation of laser transmission thermoplastic welding of circular contour using a moving heat source

Authors: Bappa Acherjee; Arunanshu S. Kuar; Souren Mitra; Dipten Misra

Addresses: Department of Production Engineering, Birla Institute of Technology: Mesra, Deoghar Campus, Deoghar 814 142, India ' Department of Production Engineering, Jadavpur University, Kolkata – 700 032, India ' Department of Production Engineering, Jadavpur University, Kolkata – 700 032, India ' School of Laser Science and Engineering, Jadavpur University, Kolkata – 700 032, India

Abstract: In the present research, a three-dimensional transient numerical model is developed to simulate the laser transmission welding of circular contours. Polycarbonate, a thermoplastic material, is considered as work material for developing and validating the model. The welding simulation is performed, to compute the temperature distribution and shape and size of the molten pool, using the commercial finite element software ANSYS®. The results numerical analysis is further used for investigating the parametric effect on temperature field and weld bead profile. The results obtained reveal that laser power has a positive effect on all the responses investigated; whereas, welding speed has a negative effect. For constant line energy, higher temperature is obtained at a combination of high power with high welding speed.

Keywords: numerical simulation; finite element method; FEM; modelling; laser transmission welding; temperature field; circular contours; thermoplastics; thermoplastic welding; moving heat source; polycarbonate; temperature field; weld bead profile; laser power; welding speed.

DOI: 10.1504/IJMMS.2013.058522

International Journal of Mechatronics and Manufacturing Systems, 2013 Vol.6 No.5/6, pp.437 - 454

Received: 02 Jan 2013
Accepted: 24 Apr 2013

Published online: 02 Jan 2014 *

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