Abstract
Based on multiplicative decomposition of deformation gradient and energy decomposition, a temperature-dependent 3D anisotropic visco-hyperelastic constitutive model was developed for jute woven fabric reinforced poly (butylene succinate) (PBS) biocomposites for thermoforming simulation. The melted PBS matrix was characterized by a viscoelastic model, while the woven jute fabric reinforcement was modelled as an anisotropic hyperelastic material. Temperature influence on interaction between fabric reinforcement and PBS matrix was considered. A specific jute plain weave fabric reinforced PBS biocomposite was prepared and tested under thermoforming temperature range to provide a complete set of data for model parameter identification. Based on the proposed model, finite element simulation of a hemispherical thermoforming process of the biocomposite sheet was implemented. Comparison with experiment results validated the proposed constitutive model.
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