Abstract
In this paper, finite element prediction of sheet metal forming process is investigated using solid elements. A three-dimensional rigidviscoplastic finite element method with linear tetrahedral MINI-elements is employed. This technique has traditionally been used for bulk metal forming simulations. The solid element approach with remeshing capability is applied to simulating a plate metal forming process to reveal its possible problems. The similar approach is also applied to a typical sheet forming process. Both single- and double-layer finite element mesh systems are studied, with particular attention to their effect on the deformed shape of the workpiece and thickness variation of a cold sheet forming process. The procedure is applied to the well-known problem of the NUMISHEET93 international benchmark. The resulting predictions are compared with experimental observations found in the literature, and good agreement is noted.
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Recommended by Editor Yeon June Kang
ManSoo Joun is a professor of Gyeongsang National University in South Korea. He graduated from Seoul National University for his bachelor’s degree, from KAIST for his master’s degree and from POSTECH for his Ph.D. degree. He has developed and commercialized a general-purpose metal forming simulator called AFDEX, which is competitive in terms of solution accuracy and user-friendliness.
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Chung, W., Kim, B., Lee, S. et al. Finite element simulation of plate or sheet metal forming processes using tetrahedral MINI-elements. J Mech Sci Technol 28, 237–243 (2014). https://doi.org/10.1007/s12206-013-0959-0
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DOI: https://doi.org/10.1007/s12206-013-0959-0