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Numerical Modeling of Viscoelastic Stress Relaxation During Glass Lens Forming Process
Author(s) -
Jain Anurag,
Yi Allen Y.
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00114.x
Subject(s) - finite element method , viscoelasticity , lens (geology) , stress relaxation , molding (decorative) , stress (linguistics) , process (computing) , computer simulation , forming processes , relaxation (psychology) , computer science , mechanical engineering , materials science , optics , structural engineering , engineering , composite material , simulation , physics , creep , operating system , psychology , social psychology , linguistics , philosophy
With the recent advances in numerical simulation capabilities and computing technology, finite element method (FEM) can be applied to predict the performance of a precision aspherical lens molding process. In this paper, various stages of the lens molding process have been modeled using a commercial FEM code MSC MARC. Stress relaxation effect during the forming stage has been incorporated into the numerical model by using a generalized Maxwell model. Successful comparison of the predicted results has been made with the experimental data. The various aspects of the simulation that would enable a more realistic modeling of the process have been identified for future research.