|About this Abstract
||NUMIFORM 2019: The 13th International Conference on Numerical Methods in Industrial Forming Processes
||S-01: Modeling of the Anisotropic Behavior in Plasticity
||An Experimental Study on Yield Surface Evolution of a Trip-assisted Steel
||Nan Guo, Junying Min, Yong Hou, Jianping Lin, John E. Carsley, Thomas B. Stoughton, A. Erman Tekkaya, Till Clausmeyer, Heinrich Traphöner
|On-Site Speaker (Planned)
A 3rd generation advanced high strength steel, trip-assisted, QP980, was found to exhibit significant tension/compression strength asymmetry. Yield loci at equivalent plastic strains up to 0.05 were experimentally obtained, and measured data used to calibrate several constitutive models. It was found that modification of the Yld2000 yield function with a pressure-sensitive term enabled effective modelling of the strength differential effect in the evolving yield surface of this steel. The mechanical behavior including yield surface evolution was characterized experimentally including uniaxial tension, uniaxial compression, biaxial tension, and in-plane torsion tests.