Auteur Dafalias, Yannis F.
Documents disponibles écrits par cet auteur (7)
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Plesek, Jiri, Auteur ; Feigenbaum, Heidi P., Auteur ; Dafalias, Yannis F., Auteur |The present paper examines the convexity of the yield surface in the directional distortional hardening models by Feigenbaum and Dafalias. In these models anisotropy develops through kinematic and directional distortional hardening, supplemented[...]
Article : texte imprimé
Dafalias, Yannis F., Auteur ; Younis, Bassam A., Auteur |Representation theorems for isotropic functions are used to construct a closure model for the fluctuating pressure-strain-rate correlation tensor. In contrast to alternative proposals in the literature, the present model does not include a depen[...]
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The validity of objectivity or frame-indifference in turbulence is examined simultaneously from the dual perspective of change of reference frame and superposed rigid-body motion. Similarities and differences arising from the two approaches and [...]
Article : texte imprimé
Dafalias, Yannis F., Auteur ; Papadimitriou, Achilleas G., Auteur ; Li, Xiang S. ; Victor N. Kaliakin, Éditeur scientifique |A sand plasticity constitutive model is presented herein, which accounts for the effect of inherent fabric anisotropy on the mechanical response. The anisotropy associated with particles’ orientation distribution, is represented by a second-orde[...]
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Mark Mahan, Auteur ; Dafalias, Yannis F., Auteur ; Mahdi Taiebat, Auteur |A simple constitutive model for the inelastic response of steel under monotonic and random cyclic loading conditions is developed within the framework of bounding surface plasticity. The particular feature that distinguishes this model from othe[...]
Article : texte imprimé
Feigenbaum, Heidi P., Auteur ; Dafalias, Yannis F., Auteur |Directional distortion, observed in many experiments on various types of metals, refers to the formation of a region of high curvature (sharpening) on the yield surface approximately in the direction of loading, and a region of low curvature (fl[...]
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Dafalias, Yannis F., Auteur ; Manzari, Madjid T., Auteur ; Anandarajah, A. Rajah, Éditeur scientifique |A simple stress-ratio controlled, critical state compatible, sand plasticity model is presented, first in the triaxial and then in generalized stress space. The model builds upon previous work of the writers, albeit the presentation here is made[...]
