Abstract
Thermoforming is a manufacturing process widely used to produce thin thermoplastic parts. In this process a previously extruded thermoplastic sheet is clamped and then heated and formed into a mold cavity using a differential pressure. In this paper a finite element model of the thermoforming process of an ABS sheet is proposed and numerical results are compared to data from literature. Thermoplastic sheet is modelled according to the membrane formulation. An implicit time scheme has been adopted for the integration algorithm. Mechanical behaviour of the processing material is assumed as hyperelastic, according to the two parameters Mooney-Rivlin model. Mathematical formulation of the mechanical model is exposed. The proposed model allows to evaluate material thinning, stresses, strains and contact status between the processing material and the die.
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Carlone, P., Palazzo, G.S. (2006). Finite Element Analysis of the Thermoforming Manufacturing Process Using the Hyperelastic Mooney-Rivlin Model. In: Gavrilova, M., et al. Computational Science and Its Applications - ICCSA 2006. ICCSA 2006. Lecture Notes in Computer Science, vol 3980. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11751540_86
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DOI: https://doi.org/10.1007/11751540_86
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-34070-6
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