Deformation and failure of lightweight materials under crash conditions

© Fraunhofer IWM

The focus here is on the characterization of different lightweight materials such as high-strength steels, light metals, foams, FRPs and joints in relation to expansion rate under multi-axial loads from quasi-static to crash-relevant load speed. The investigations are carried out using modern, high-speed testing equipment and high-resolution measuring techniques, and non-contact (optical) strain analysis in combination with high-speed cameras and patented force measurement techniques. The results can be used for the material cards in crash simulations.

Publications

 

Janarthanam, H.; Sommer, S.; Carl, E.- R.; Preußner, J.; Huberth, F., Numerical prediction of damage in punching process using shear modified Gurson model, in Proc. of 4th European Steel Technology and Application Days; Stahlinstitut VDEh, Düsseldorf (2019) 11 Seiten

Klitschke, S.; Trondl, A.; Huberth, F., Influence of strain rate on deformation and failure behavior of sheet metals under shear loading, in Proc. of 12th European LS-DYNA Conference 2019; DYNAmore GmbH, Stuttgart (2019) Paper no. 128 Link 

Lienhard, J.; Huberth, F., Strain rate dependent thermo-mechanical aspects of glass fiber reinforced thermoplastic based on experimental data, International Journal of Impact Engineering 131 (2019) 57-65 Link

Huberth, F.; Bimi, P.; Klitschke, S.; Lienhard, J., Dynamic micro testing over more than 5 decades of strain rates, in Proc. of 2nd International Conference on Impact Loading of Structures and Materials ICILSM 2018; Northwestern Polytechnical University X'ian, Xi'an, China (2018) Art. 116, 4 Seiten

Klitschke, S.; Trondl, A.; Huberth, F.; Liewald, M., Adiabatic heating under various loading situations and strain rates for advanced high-strength steels, IOP Conference Series: Materials Science and Engineering Vol. 418/Issue 1; 37th International Deep Drawing Research Group Conference - Forming of High Performance Sheet Materials and Components IDDRG 2018; Butcher C.; Worswick M.; Bardelcik A. (Eds.); IOP Publishing Ltd., London, UK (2018) Art. 012123, 10 Seiten Link

Lienhard, J.; Schulenberg, L., Strain rate dependent multiaxial characterization of long fiber reinforced plastic, Composites Part B: Engineering 141 (2018) 164-173 Link

Dittmann, F.; Varfolomeev, I., Comparison of analytical methods for the consideration of thermal stresses in the engineering failure assessment, Procedia Structural Integrity 2 (2016) 2974-2981 Link