TY - JOUR

T1 - FE modeling and simulation framework for the forming of hybrid metal-composites clinching joints

AU - Dean, A.

AU - Rolfes, R.

N1 - Funding information: The authors gratefully acknowledge the financial support of the German Research Foundation (DFG) in the course of the priority program 1640 “joining by plastic deformation” (SPP 1640) with contract No. RO 706/6-2 . The authors would also like to thank the project partners Nenad Grbic and Bernd-Arno Behrens (IFUM) of project C1 and B2 of the SPP1640 for the constructive cooperation on the topic. Many thanks and gratitude also goes to Jose Reinoso, Shahab Sahraee, Nabeel Safdar, Benedikt Daum, and Eelco Jansen for the helpful comments and discussions. The administrative support of Tanya Pinn and Cornelia Kluge is highly appreciated. The experimental tests needed for parameter identification of the material models used for the numerical simulation were mostly carried out at IFUM (Institute of Forming Technology and Machines, Leibniz Universität Hannover, Germany) as a part of a subproject of the Priority Program SPP 1640 which is funded by the German Research Foundation (DFG). For the standard von Mises model, the elastic and plastic material properties are obtained from experimental data given in [41] where quasi-static uniaxial tension tests were carried out. The elastic properties are reported in Table 1 . For the plastic material behavior, the true stress - true plastic strain curve from the uniaxial tension tests is required. The mathematical model of this curve is given by: (3) where and stand for uniaxial tension true stress and plastic strain, respectively.

PY - 2018/10/5

Y1 - 2018/10/5

N2 - A 3D elasto-plastic numerical modeling and simulation framework is proposed for the forming of hybrid metal-composites clinching processes. The framework is employed in the commercial finite element software ABAQUS. The proposed FE procedures are presented and discussed in detail. Then, an experimental-numerical validation example of a metal-composites hybrid clinching process is presented. The material pairing of PA6GF30 and EN AW 5754 is chosen for this purpose. Accordingly, a user-defined constitutive model is employed for the PA6GF30 sheet to represent the sophisticated constitutive behavior of composites in more realistic manner. A brief description of the model and the parameter identification is provided. For the EN AW 5754 material, the standard von Mises model is used. The simulation results presented show the applicability and accuracy of the modeling framework, which can serve as a tool to investigate and to improve the mechanical behavior of hybrid clinching joints.

AB - A 3D elasto-plastic numerical modeling and simulation framework is proposed for the forming of hybrid metal-composites clinching processes. The framework is employed in the commercial finite element software ABAQUS. The proposed FE procedures are presented and discussed in detail. Then, an experimental-numerical validation example of a metal-composites hybrid clinching process is presented. The material pairing of PA6GF30 and EN AW 5754 is chosen for this purpose. Accordingly, a user-defined constitutive model is employed for the PA6GF30 sheet to represent the sophisticated constitutive behavior of composites in more realistic manner. A brief description of the model and the parameter identification is provided. For the EN AW 5754 material, the standard von Mises model is used. The simulation results presented show the applicability and accuracy of the modeling framework, which can serve as a tool to investigate and to improve the mechanical behavior of hybrid clinching joints.

KW - Composites

KW - Finite element method (FEM)

KW - Hybrid clinching

KW - Metal

KW - Multi-material design

UR - http://www.scopus.com/inward/record.url?scp=85054236977&partnerID=8YFLogxK

U2 - 10.1016/j.tws.2018.09.034

DO - 10.1016/j.tws.2018.09.034

M3 - Article

AN - SCOPUS:85054236977

VL - 133

SP - 134

EP - 140

JO - Thin-walled structures

JF - Thin-walled structures

SN - 0263-8231

ER -