Abstract
New advanced materials have received more attention from many scientists and engineers because of their outstanding chemical, electrical, thermal, optical, and mechanical properties. Since the design of advanced material by experiments requires high cost and time, numerical approaches have always been of great interest. In this paper, finite element analysis of anisotropic material behavior has been carried out based on a multiresolution continuum theory. Gurson-Tvergaard-Needleman (GTN) damage model has been applied as a constitutive model at macroscale. Effects of plastic anisotropy on deformation behavior are assessed using Hill’s 48 yield function for anisotropic material and von Mises yield function for isotropic material, respectively. The material parameters for both isotropic and anisotropic damage models have systematically been determined from microstructure through unit cell modeling. The newly proposed linear approximation of local velocity gradient resolved the underdetermined problem of the previous homogenization process. Anisotropic material behaviors of a tensile specimen have been investigated by the proposed multiresolution continuum theory.
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Recommended by Associate Editor Heung Soo Kim
Moon Ki Kim received the B.S. and M.S. degrees in Mechanical Engineering from Seoul National University in 1997 and 1999, respectively, and the M.S.E. and Ph.D. degrees from the Johns Hopkins University in 2002 and 2004, respectively. He had been an Assistant Professor in the Department of Mechanical and Industrial Engineering at University of Massachusetts, Amherst from 2004 to 2008. He has worked for school of Mechanical Engineering at Sungkyungkwan University as an associate professor since 2009. His research interests are focused on computational structural biology based on robot kinematics, bioinstrumentations, and multiscale modeling and simulation.
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Lee, D., Chang, YS., Choi, JB. et al. Prediction of anisotropic material behavior based on multiresolution continuum mechanics in consideration of a characteristic length scale. J Mech Sci Technol 26, 2863–2868 (2012). https://doi.org/10.1007/s12206-012-0728-5
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DOI: https://doi.org/10.1007/s12206-012-0728-5