Abstract
A numerical technique is proposed to simulate the forming of fiber-reinforced thermoplastic sheets. The material primarily considered is a composite system consisting of aligned, long discontinuous fibers in a thermoplastic matrix. This composite is described at its forming temperature as an oriented assembly of discontinuous fibers suspended in a viscous matrix and the constitutive equation for an equivalent, viscous anisotropic medium is employed. The finite-element technique with viscous shell model originally developed for large plastic deformation of metal sheet is adapted to the case of highly anisotropic materials and fiber orientation change during the forming process is taken into consideration. The simulation of off axis tensile testing and sheet bulging are presented. A methodology for adapting existing finite-element programs to model various sheet forming processes for advanced thermoplastic composites is developed.
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© 1992 Computational Mechanics Publications
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Beaussart, A.J., Pipes, R.B., Okine, R.K. (1992). Numerical Modeling of Sheet Forming Processes for Thermoplastic Composites. In: Advani, S.G., Blain, W.R., de Wilde, W.P., Gillespie, J.W., Griffin, O.H. (eds) Computer Aided Design in Composite Material Technology III. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2874-2_1
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DOI: https://doi.org/10.1007/978-94-011-2874-2_1
Publisher Name: Springer, Dordrecht
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