Abstract
Two finite-element modeling (FEM) programs have been developed to simulate three-dimensional sheet forming operations. The rigid-visco-plastic (R–P) [1] and elastic-plastic (E–P) [2] programs make use of constant-strain triangular elements, membrane mechanics, Hill’s yield surfaces [3,4], updated Lagrangian formulations, and a Coulomb model of friction at tool interfaces. The R–P program is based on a fully nonlinear treatment (geometry, material, contact, friction) at each time step while the E–P program is completely linearized at each time step, with all updating taking place only at the next increment. Operational experience illustrates the advantages and disadvantages of the two approaches.
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References
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J. R. Knibloe, Master’s Thesis, The Ohio State University (1988)
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© 1988 Kluwer Academic Publishers
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Wagoner, R.H., Nakamachi, E., Germain, Y. (1988). Experience with Explicit and Implicit Finite Element Programs for Sheet Forming Analysis. In: Chenot, J.L., Oñate, E. (eds) Modelling of Metal Forming Processes. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1411-7_15
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DOI: https://doi.org/10.1007/978-94-009-1411-7_15
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7131-4
Online ISBN: 978-94-009-1411-7
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