naa a22 4500 510790682 CHVBK 20180411083318.0 cr unu---uuuuu 180411e20130301xx s 000 0 eng 10.1007/s12289-011-1064-5 doi (NATIONALLICENCE)springer-10.1007/s12289-011-1064-5 Analysis of the formability magnesium alloys using a new ductile fracture criterion [Elektronische Daten] [Victor Watiti, George Labeas] An innovative methodology for the determination of forming limits is proposed, based on the strain energy density criterion. In the first section of this paper a modification of the strain energy density criterion, that has mainly been applied for crack propagation in fracture mechanics, is performed, in order to become applicable in metal forming processes. In the second section, experimental methods and Finite Element (FE) analysis for the case of deep drawing forming process are used for the verification of the methodology. Based on the simulation methodology, the forming limits and some process parameters namely, forming temperature, punch radius, punch profile radius and strain rate sensitivity of magnesium alloys AZ31 and WE43 are determined. The optimization results for the studied case show that magnesium alloys have limited formability especially at room temperature; however the formability can be improved by forming at higher temperatures. Finally, formability is improved as the punch and punch profile radii increase up to an optimum value. Springer-Verlag France, 2011 Finite elements nationallicence Forming limits nationallicence Strain energy density nationallicence Magnesium alloys nationallicence Deep drawing nationallicence Watiti Victor Laboratory of Technology & Strength of Materials, Department of Mechanical Engineering & Aeronautics, University of Patras, Panepistimioupolis Rion, 26500, Patras, Greece aut Labeas George Laboratory of Technology & Strength of Materials, Department of Mechanical Engineering & Aeronautics, University of Patras, Panepistimioupolis Rion, 26500, Patras, Greece aut International Journal of Material Forming Springer-Verlag 6/1(2013-03-01), 165-171 1960-6206 6:1<165 2013 6 12289 https://doi.org/10.1007/s12289-011-1064-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12289-011-1064-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Watiti Victor Laboratory of Technology & Strength of Materials, Department of Mechanical Engineering & Aeronautics, University of Patras, Panepistimioupolis Rion, 26500, Patras, Greece aut NATIONALLICENCE 700 1- Labeas George Laboratory of Technology & Strength of Materials, Department of Mechanical Engineering & Aeronautics, University of Patras, Panepistimioupolis Rion, 26500, Patras, Greece aut NATIONALLICENCE 773 0- International Journal of Material Forming Springer-Verlag 6/1(2013-03-01), 165-171 1960-6206 6:1<165 2013 6 12289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer