Numerical Analysis of the Mechanical Behavior of Lightweight Metal-CFRP Joints


  • The authors thank the German Research Foundation (DFG) for the financial support within the Research Unit (FOR) 524 “Manufacturing, Characterisation and Simulation of Welded Lightweight Structures of Metal/Fibre-Reinforced Polymer Composites” at the University of Kaiserslautern, Germany.

Institute of Applied Mechanics, University of Kaiserslautern, Gottlieb-Daimler-Strasse, Postfach 3049, 67653 Kaiserslautern, Germany.



Influence of the welding geometry on the mechanical characteristics of light metal/carbon fiber reinforced polymer overlapped structures is analyzed. An elastoplastic model with Lemaitre-type damage is used for the simulation of the mechanical behavior of the interface material. An interfacial traction–separation law is applied. Finite element method is used for the simulation of force–displacement curves of ultrasonically welded AA5754/CF-PA66 joints.