A Critical Review of Different Experimental Approaches to Calibrate Numerical Sheet Forming Simulations 2007-01-1685
The calibration of yield functions for numerical sheet forming simulations is done using different experimental approaches such as the uniaxial tensile test, the bulge test, etc. How accurately the material behavior of dedicated aluminum, conventional and high strengths steel grades subjected to various loading conditions can be modeled is investigated using e.g. uniaxial tensile test data only. Different formulations of yield functions that are widely used in industry (e.g. Hill'48, Hosford'79, Hill'90) are considered. It is shown that tensile test data is insufficient to successfully calibrate yield functions for numerical sheet forming simulations especially for aluminum and pronounced anisotropic steel. The use of improved formulations of yield functions is emphasized.
Citation: Ofenheimer, A., Kitting, D., Iadicola, M., and Foecke, T., "A Critical Review of Different Experimental Approaches to Calibrate Numerical Sheet Forming Simulations," SAE Technical Paper 2007-01-1685, 2007, https://doi.org/10.4271/2007-01-1685. Download Citation
Aldo Ofenheimer, Daniela Kitting, Mark Iadicola, Tim Foecke
Virtual Vehicle Research Center, Austria, National Institute of Standards and Technology
SAE World Congress & Exhibition
Steel Innovations, Fatigue Research, Sheet/Hydro/Gas Forming Technology & Advanced High Strength Steel Development-SP-2103, SAE 2007 Transactions Journal of Materials and Manufacturing-V116-5