Phenomenological Modeling of Sheet Moulding Compound Composites Under Quasi-Static Three-Point Bending
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Date
2018-06-19
Authors
Tham, Jonathan Chun-Yiu
Journal Title
Journal ISSN
Volume Title
Publisher
University of Waterloo
Abstract
A phenomenological model is implemented to model the behaviour of a glass fiber reinforced sheet moulding composite material. Previous characterization of SMC composites, which included the tensile, compressive, in-plane shear and three-point flexure test, found that the material exhibits tension-compression asymmetry and in-plane anisotropy. Based on the experimental results, a model, which incorporates an anisotropic and asymmetric yield function, is implemented in LS-DYNA as a user-defined material model. The model is calibrated to the experimental tension, compression and in-plane shear test results and is validated using the experimental three-point flexure test results. The model is able to capture the flexure stress-strain response within 8% of experimental results. Parametric studies are conducted to determine the sensitivity of the flexure test simulation results to various modeling and material parameters.
Description
Keywords
Composite materials, Finite element analysis, Phenomenological Modeling, Sheet Moulding Compounds