A temperature-dependent 3D anisotropic visco-hyperelastic constitutive model for jute woven fabric reinforced poly (butylene succinate) biocomposite in thermoforming

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.

Automated summary

A temperature-dependent 3D anisotropic visco-hyperelastic constitutive model was developed for jute woven fabric reinforced PBS biocomposites, considering the temperature influence on the interaction between fabric reinforcement and PBS matrix. Finite element simulation of thermoforming process validated the proposed model.