naa a22 4500 510790674 CHVBK 20180411083318.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s12289-011-1075-2 doi (NATIONALLICENCE)springer-10.1007/s12289-011-1075-2 Chatti S. Laboratory of Mechanical Engineering, Higher Institute of Applied Science and Technology of Sousse, ISSAT, Cité Taffala (Ibn Khaldoun), 4003, Sousse, Tunisia aut Modeling of the elastic modulus evolution in unloading-reloading stages [Elektronische Daten] [S. Chatti] It was already stated that springback in sheet metal forming strongly depends on the elastic properties. Several experimental investigations have revealed that the elastic modulus decreases as the plastic strain increases. Two approaches have been separately employed to explain this phenomenon: dislocations rearrangements and damage. These approaches are considered in a proposed elastoplastic model coupled with damage based on Lemaitre type isotropic ductile damage law. In addition, a hysteresis aspect, which is experimentally observed during unloading-reloading stages, is also considered. Uniaxial tension tests have been used and the predicted results agree well with published experimental data. The proposed model is intended to be implemented in FEM codes for reliable results in forming processes including springback. Springer-Verlag France, 2011 Unloading-reloading elastic modulus nationallicence Stiffness degradation nationallicence Elastoplasticity nationallicence Damage nationallicence International Journal of Material Forming Springer-Verlag 6/1(2013-03-01), 93-101 1960-6206 6:1<93 2013 6 12289 https://doi.org/10.1007/s12289-011-1075-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12289-011-1075-2 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Chatti S. Laboratory of Mechanical Engineering, Higher Institute of Applied Science and Technology of Sousse, ISSAT, Cité Taffala (Ibn Khaldoun), 4003, Sousse, Tunisia aut NATIONALLICENCE 773 0- International Journal of Material Forming Springer-Verlag 6/1(2013-03-01), 93-101 1960-6206 6:1<93 2013 6 12289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer