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Numerical Simulation for Pressing Process of Hot glass  

Ji Suk Man (지엠대우 오토앤테크놀로지(주))
Choi Joo Ho (한국항공대학교 항공우주 및 기계공학과)
Kim Jun Bum (삼성코닝(주))
Ha Duk Sik (삼성코닝(주))
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.5, 2005 , pp. 205-213 More about this Journal
Abstract
This paper addresses a method for numerical simulation in the pressing process of hot glass. Updated Lagrangian finite element formulations are employed for the flow and energy equations to accommodate moving meshes. The model is assumed axi-symmetric and creep flow is assumed due to the high viscosity. Commercial software ANSYS is used to solve the coupled flow and energy equations. Moving contact points as well as free surface during the pressing are effectively calculated and updated by utilizing API functions of CAD software Unigraphics. The mesh distortion problem near the wall is overcome by automatic remeshing, and the temperatures of the new mesh are conveniently interpolated by using a unique function of ANSYS. The developed model is applied to the pressing process of TV glasses. In conclusion, the presented method shows that the pressing process accompanying moving boundary can be simulated by effectively combining general purpose software without resorting to special dedicated codes.
Keywords
Pressing Process; Lagrangian Finite Element Formulations; Hot Glass; Moving Boundary; Automatic Remeshing;
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