|About this Abstract
|NUMISHEET 2022: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
|Development of a Modified Punch Test for Investigating the Failure Behavior in Sheet Metal Materials
|Max Boehnke, Christian Roman Bielak, Mathias Bobbert, Gerson Meschut
|On-Site Speaker (Planned)
In the numerical simulation of mechanical joining technologies, the material modeling of the joining parts is of major importance. This includes modelling the damage and failure behavior of the materials in accordance with varying occurring stress states. For the experimental determination of the material related damage parameters the punch test has proven to be suitable, as it enables to generate different stress states. However, the exact determination of the failure time or location has been problematic due to the lack of optical accessibility. Therefore, a modified, half-sectioned test rig for a punch test was developed, which enables a precise detection of failure initiation time, location and failure evolution under defined stress states in sheet metal by means of local optical measurements of the specimen. This study presents the proof of functionality of the testing method by experiments in automotive relevant sheet metal material and the verification of related simulations.
|Definite: At-meeting proceedings