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Journal of Applied Mathematics
Volume 2013, Article ID 856171, 8 pages
Research Article

Simulation of Stress Distribution near Weld Line in the Viscoelastic Melt Mold Filling Process

1School of Applied Sciences, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, China
2School of Science, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China

Received 20 April 2013; Revised 31 May 2013; Accepted 18 June 2013

Academic Editor: Bo Yu

Copyright © 2013 Binxin Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Simulations of interface evolution and stress distribution near weld line in the viscoelastic melt mold filling process are achieved according to the viscoelastic-Newtonian two-phase model. The finite volume methods on nonstaggered grids are used to solve the model. The level set method is used to capture the melt interface. The interface evolution of the viscoelastic melt in the mold filling process with an insert in is captured accurately and compared with the result obtained in the experiment. Numerical results show that the stress distribution is anisotropic near the weld line district and the stress distribution varies greatly at different positions of the weld line district due to the complicated flow behavior after the two streams of melt meet. The stress increases quickly near the weld line district and then decreases gradually until reaching the tail of the mold cavity. The maximum value of the stress appears at some point after the insert.