On the anisotropic plastic behaviour of short fibre reinforced thermoplastics and its description by phenomenological material modelling

Description

A requirement for the safe design of thermoplastic parts is the ability to precisely predict mechanical behaviour by finite element simulations. Typical examples include the engineering of relevant components in automotive applications. For this purpose adequate material models are essential. In this context, the present work introduces a material modelling approach for short fibre reinforced thermoplastics (SFRTPs). SFRTP parts are processed cost-effectively by injection moulding and show a varying degree of anisotropy due to the locally inhomogeneous fibre distributions that arise during the moulding process. The presented material model considers linear-elastic behaviour and non-linear orthotropic stress-state dependent viscoplastic deformation for arbitrary fibre distributions. The constitutive equations are verified with the experiments of a PPGF30 material regarding different stress-states and orientations. Front Matter ....Pages i-xix Motivation and Outline (Felix Dillenberger)....Pages 1-5 Injection Moulded Short Fibre Reinforced Thermoplastics (Felix Dillenberger)....Pages 7-29 Mechanical Basics (Felix Dillenberger)....Pages 31-50 Material Characterisation (Felix Dillenberger)....Pages 51-108 Material Modelling (Felix Dillenberger)....Pages 109-161 Verification (Felix Dillenberger)....Pages 163-184 Considerations for Engineering Practice (Felix Dillenberger)....Pages 185-193 Summary and Outlook (Felix Dillenberger)....Pages 195-197 Back Matter ....Pages 199-227