Automated Process for Calibrating Material Cards of Punctiform and Planar Joints in Finite Element Simulations

Abstract

In the automotive industry, point and surface joining techniques are often used. These include clinching, selfpierce riveting, flow drilling screws and adhesive joints. To accurately model the joints in FE-Models, especially for crash simulations, properly calibrated material cards are required. A great amount of manual effort is required for the generation of the material card parameters. Automating this process can reduce the costs currently required for the generation of validated numerical descriptions. For this purpose, an automated process chain will be developed. Using tensile tests, performed on a universal testing machine, the quasi static characteristics of joints will be determined. The dynamic characteristics will be determined using the IMPETUS pendulum from 4a Engineering. New clamping concepts and simulation models are developed to receive the static and dynamic responses of the joints. Furthermore, algorithms will be implemented that automatically determine the material card parameters of the joint connection, considering various boundary conditions, from the obtained test results. In this work, the current status of the development is shown.