A new invariant-based thermo-plastic model for finite deformation analysis of short fibre reinforced composites: Development and numerical aspects. (15th September 2017)

• Record Type: Journal Article
• Authors: Dean, A.; Sahraee, S.; Reinoso, J.; Rolfes, R.
• Is Part Of: Composites. Number 125(2017)
• Page Start: 241
• Page End: 258
• Publication Date: 2017-09-15
• Subjects: Anisotropic plasticity -- Short fiber reinforced thermoplastics -- Thermo-mechanical coupling -- Finite element method (FEM) -- Finite deformation; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2017.05.043
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: A novel invariant-based thermo-plastic model for finite deformation analysis of short fibre reinforced composites is presented including aspects of its numerical implementation. The underlying concept complies with thermodynamic restrictions, allowing a robust and consistent modeling framework. The main novelties of the current investigation concern: (i) an alternative definition of the plastic potential function assuming a non-associative plastic formulation, and (ii) the update of the preferential material orientation along the thermo-plastic deformation process using a geometrically nonlinear description. On the computational side, the derivation of an internal variable formulation using an objective integration algorithm and the closed-form of the consistent tangent moduli are outlined. The performance of the proposed model is assessed via a set of numerical simulations, which demonstrate its applicability and robustness.