Damage-induced changes in elastic stiffness of DP800 sheets at large strains Jan Gerlach, Robin Gitschel, Marlon Hahn, Yannis P. Korkolis and A. Erman Tekkaya MATEC Web Conf., 408 (2025) 02021 Published online: 07 May 2025 DOI: 10.1051/matecconf/202540802021