%0 Conference Paper %1 Drotleff2016 %A Drotleff, K %A Panich, S %A Liewald, M %A Uthaisangsuk, V %B Forming Technology Forum %C Munich %D 2016 %I Chair of Metal Forming and Casting , Technical University of Munich %K imported from:jmueller test %P 7 %T Experimental and numerical formability analysis of advanced high strength steel for deep drawing using the nonlinear strain path forming limit %X In this work, the experimental and numerical analysis using nonlinear strain path forming limits were studied. Forming Limit Curves (FLC) of standard and pre stretched Advanced High Strength (AHS) steel grade DP600 were obtained. These FLCs were conducted in a standard Nakajima testing device at the Institute for Metal Forming Technology (IFU). Subsequently, the experimental forming limit stress curves (FLSCs) were calculated. Additionally, the anisotropic yield criterion Barlat2000 (Yld2000-2d) was applied for describing plastic flow behaviour of the investigated steel. The Swift strain hardening law was taken into account. In order to determine material properties for different states of stress and loading direc-tions, uniaxial tensile test, balanced biaxial bulge test and disk compression test were performed for obtain-ing anisotropy parameters for Yld2000-2d. To verify applicability of IFU-FLC-Criterion to determine local-ised necking in case of nonlinear strain path, an industrial part Mini-Tunnel was pressed and simulated. The applied yield criterion showed significant influences on the calculated FLSC and the simulated strain and stress results for the Mini-Tunnel. It was shown that the nonlinear strain path IFU-FLC could describe the formability behaviour under nonlinear strain paths more precisely.

@inproceedings{Drotleff2016, abstract = {In this work, the experimental and numerical analysis using nonlinear strain path forming limits were studied. Forming Limit Curves (FLC) of standard and pre stretched Advanced High Strength (AHS) steel grade DP600 were obtained. These FLCs were conducted in a standard Nakajima testing device at the Institute for Metal Forming Technology (IFU). Subsequently, the experimental forming limit stress curves (FLSCs) were calculated. Additionally, the anisotropic yield criterion Barlat2000 (Yld2000-2d) was applied for describing plastic flow behaviour of the investigated steel. The Swift strain hardening law was taken into account. In order to determine material properties for different states of stress and loading direc-tions, uniaxial tensile test, balanced biaxial bulge test and disk compression test were performed for obtain-ing anisotropy parameters for Yld2000-2d. To verify applicability of IFU-FLC-Criterion to determine local-ised necking in case of nonlinear strain path, an industrial part Mini-Tunnel was pressed and simulated. The applied yield criterion showed significant influences on the calculated FLSC and the simulated strain and stress results for the Mini-Tunnel. It was shown that the nonlinear strain path IFU-FLC could describe the formability behaviour under nonlinear strain paths more precisely.}, added-at = {2022-03-04T14:47:02.000+0100}, address = {Munich}, author = {Drotleff, K and Panich, S and Liewald, M and Uthaisangsuk, V}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2ae8e6f4920cbd4f256f091e312fe61af/schulung}, booktitle = {Forming Technology Forum}, interhash = {8d049ecfe01311e190a0d4fa09afd611}, intrahash = {ae8e6f4920cbd4f256f091e312fe61af}, keywords = {imported from:jmueller test}, pages = 7, publisher = {Chair of Metal Forming and Casting , Technical University of Munich}, timestamp = {2022-03-04T13:47:02.000+0100}, title = {Experimental and numerical formability analysis of advanced high strength steel for deep drawing using the nonlinear strain path forming limit}, year = 2016 }