... distribution, and invoke a damage model for elemental tensile and compressive stresses based on the maximum tensile stress and the Mohr–Coulomb theories, respectively. Model implementation is facilitated by the use of comsol for use in coupling the electromagnetic, thermal, and solid displacement relations...

...H. E. Cho; H. M. Zbib; M. F. Horstemeyer This study presents an irradiation-dependent internal state variable (ISV) elastoviscoplasticity-damage constitutive model that accounts for nuclear irradiation hardening and embrittlement of the irradiated polycrystalline materials. The irradiation effects...

... March 25, 2013. Assoc. Editor: Xi Chen. 30 05 2012 14 02 2013 This study presents a multiscale computational model and its application to predict damage dependent mechanical behavior of bituminous mixtures subjected to cyclic loading. Two length scales (global and local) are two-way...

...George Z. Voyiadjis; Peter I. Kattan In this work various new proposed damage variables are introduced, examined and compared. Only the scalar case pertaining to isotropic damage is investigated here. Several types of new damage variables are proposed as follows: (1) damage variables...

... the effect on strengths/behavior of the CSS samples due to embedded PFCS. Then carefully planned experiments are conducted to investigate the ability of the embedded PFCS to monitor the stress/strain levels and detect damages in CSS using modal analysis technique. The tensile tests show that both the average...

...Leila Ladani; Steven Nelson Mechanical fatigue crack nucleation and propagation is modeled in bimodal grain size aluminum alloy. A multiscale modeling approach in conjunction with a continuum based damage modeling technique, successive initiation, is used to determine microstructural site of crack...

... light alloys (i.e., Al or Mg alloys), superplastic deformation induces damage leading to premature fracture. Despite extensive work in the past, the mechanisms of damage induced by superplastic deformation remain under debate. In particular, due to the important contribution of GBS, voids with very...

...K. A. Chowdhury; R. Talreja; A. A. Benzerga This paper presents results of a computational study focused on examining the role of manufacturing-induced voids in the initiation and growth of damage at the microstructural level in polymer matrix composites loaded in tension normal to fibers...

... the localization strains when they straddle the localization band. 13 07 2007 21 11 2007 12 03 2008 aluminium grain size particle reinforced composites stress-strain relations strain localization damage finite element analysis aluminum particles grain structure Strain...

... , Proceeding “Magnesium Technology, 2000 ,” March 2000, H. I. Kaplan , J. Hryn , and B. Clow , Eds., The Mineral, Metals & Materials Society , Ohio , pp. 363 – 374 . Lapovok , R. , Smirnov , S. , and Shveykin , V. , 2000 , “ Damage Mechanics for the Fracture...

...Su Su Wang; Xiaohong Chen The proper determination of high-temperature constitutive properties and damage of polymer-matrix composites (PMC) in an aggressive environment is critical in high-speed aircraft and propulsion material development, structural integrity, and long-term life prediction...

...A. R. Ragab A phenomenological model to predict creep rupture times, based on material damage due to void growth and coalescence is presented. The model employs the Gurson-Tvergaard yield function together with the Norton-Baily power creep law. Rupture occurs at the end of a tertiary creep stage...