TY - JOUR

T1 - Finite deformation model for short fiber reinforced composites

T2 - Application to hybrid metal-composite clinching joints

AU - Dean, A.

AU - Sahraee, S.

AU - Reinoso, J.

AU - Rolfes, R.

N1 - Funding information: The authors gratefully acknowledge the financial support of German Research Foundation (DFG) through the program SPP 1640 joining by plastic deformation with contract No. RO 706/6-1. JR acknowledges the support of the Spanish Ministry of Economy and Competitiveness/FEDER (DPI2012-37187 and MAT2015-71036-P) and the Andalusian Government (Projects of Excellence No. TEP-7093 and P12-TEP-1050).

PY - 2016/2/26

Y1 - 2016/2/26

N2 - The computational modeling of hybrid metal–composite (aluminum alloys-short fiber reinforced polymers) clinching joints requires the use of finite strain constitutive formulations due to the remarkable nonlinear effects that are present in such forming process. In this study, a new invariant-based anisotropic elasto-plastic constitutive model for short fiber reinforced polymers (SFRPs) undergoing finite strains is developed. The modeling procedure fundamentally relies on the multiplicative decomposition of the deformation gradient through the introduction of the so-called isoclinic intermediate configuration. On the computational side, specific aspects with regard to the corresponding algorithmic treatment and numerical implementation of the proposed model are addressed. Experimental–numerical validation examples show the accuracy of the current modeling framework, which is suitable to be employed for modeling clinching joints.

AB - The computational modeling of hybrid metal–composite (aluminum alloys-short fiber reinforced polymers) clinching joints requires the use of finite strain constitutive formulations due to the remarkable nonlinear effects that are present in such forming process. In this study, a new invariant-based anisotropic elasto-plastic constitutive model for short fiber reinforced polymers (SFRPs) undergoing finite strains is developed. The modeling procedure fundamentally relies on the multiplicative decomposition of the deformation gradient through the introduction of the so-called isoclinic intermediate configuration. On the computational side, specific aspects with regard to the corresponding algorithmic treatment and numerical implementation of the proposed model are addressed. Experimental–numerical validation examples show the accuracy of the current modeling framework, which is suitable to be employed for modeling clinching joints.

KW - A. Finite element method (FEM)

KW - B. Short fiber reinforced thermoplastics

KW - C. Transversely isotropic plasticity

KW - D. Clinching joint

UR - http://www.scopus.com/inward/record.url?scp=84959418873&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2016.02.045

DO - 10.1016/j.compstruct.2016.02.045

M3 - Article

AN - SCOPUS:84959418873

VL - 151

SP - 162

EP - 171

JO - Composite structures

JF - Composite structures

SN - 0263-8223

ER -