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Bibliographic Data
Control Number312265
Date and Time of Latest Transaction20150706093531.AM
General Information150706s |||||||||b ||00|||
Cataloging SourceSTII-DOST
Local Call NumberScienceDirect
Main Entry - Personal NameKeun-Hwan Kim
 Dunand, Matthieu
 Mohr, Dirk
Title StatementEvaluation of associated and non-associated quadratic plasticity models for advanced high strength steel sheets under multi-axial loading by Dirk Mohr, Matthieu Dunand and Keun-Hwan Kim
Physical Descriptionpages 939-956 computer file; text; 1,489kb
Summary, Etc.The accuracy of quadratic plane stress plasticity models is evaluated for a dual phase and a TRIP-assisted steel. Both sheet materials exhibit a considerable direction-dependence of the r-ratio while the uniaxial stress–strain curves are approximately the same irrespective of the specimen direction. Isotropic and anisotropic associated as well as non-associated quadratic plasticity models are considered to describe this behavior. Using a newly-developed dual-actuator system, combinations of normal and tangential loads are applied to a flat specimen in order to characterize the sheet material response under more than 20 distinct multi-axial loading states. The comparison of the experimental results with the plasticity model predictions reveals that both the associated and non-associated quadratic formulations provide good estimates of the stress–strain response under multi-axial loading. However, the non-associated model is recommended when an accurate description of the thinning behavior is important. Moreover, a structural validation example is presented that demonstrates the higher prediction accuracy of the non-associated plasticity model.04
Subject Added Entry - Topical Termgineering04
 al phase steel04
 lti-axial testing04
 asticity
LocationST STII ScienceDirect NONPRINTS NP 14-15911 1 14-15911 Online/Download 2012-01-19
  
     
 
Physical Location
Department of Science and Technology
Science and Technology Information InstituteScienceDirect
  
     
 
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