...YuanLiang Wang; YanQing Liao; JiaHui Peng; YongZhong Ni; Hong Xu This paper is concerned with the two simple numerical implementation methods for a damage-coupled Chaboche-type viscoplastic constitutive model. By considering the damage variable as a constant in each incremental step, the return...

... nonlinear viscoplastic response. The aim of this study is to model aforementioned experiments numerically and investigate the influence of nonlinear material response on the presliding response of spherical contacts. A finite element model of a rigid spherical indenter pressed and sheared on a nonlinear...

... Contributed by the Applied Mechanics Division of ASME for publication in the J ournal of A pplied M echanics . 03 10 2021 18 11 2021 19 11 2021 08 12 2021 high-speed microscopy particle tracking shear bands spatial resolution temporal resolution viscoplasticity finite...

... , D. , 2010 , “ Thermomechanical Characterization of a Shape Memory Polymer Based Self-Repairing Syntactic Foam ,” Polymer , 51 ( 3 ), pp. 755 – 762 . 10.1016/j.polymer.2009.12.002 [11] Li , G. , and Shojaei , A. , 2012, “ A Viscoplastic Theory of Shape Memory Polymer Fibres...

... temperature thermoviscoplasticity structural relaxation composite materials compressibility compressive testing cooling fault tolerant computing glass transition heat treatment polymer foams shape memory effects viscoplasticity 19 10 2010 24 04 2011 11 07 2011 25 08...

... dislocations finite element analysis grain size hardening metallic thin films thermal stresses viscoplasticity X-ray diffraction yield stress 24 03 2010 08 07 2010 23 07 2010 20 10 2010 20 10 2010 2011 American Society of Mechanical Engineers ...

...-rate. The first material type is called elastic-plastic and the second type is called elastic-viscoplastic. In this paper, the influence of viscoplasticity of aluminum and steel on the impact process and the consequences for the coefficient of restitution is analyzed. Therefore, longitudinal impacts...

... Converging Dies, Using a Viscoplastic Constitutive Equation ,” Int. J. Mech. Sci. 0020-7403 10.1016/0020-7403(75)90040-5 , 17 , pp. 425 – 433 . Durban , D. , 1984 , “ Rate Effects in Steady Forming Processes of Plastic Materials ,” Int. J. Mech. Sci. , 26 ( 4 ), pp. 293 – 304 . 0020-7403...

...K. A. Ismail; W. J. Stronge A viscoplastic coefficient of restitution (COR) that accounts for nonfrictional sources of energy dissipation is determined for direct collision between hard compliant bodies. This COR incorporates effects of both irreversible elastic-plastic material (rate-independent...

... system. From a thermodynamic perspective, one can also estimate the scale dependencies of the dissipation potential in the velocity space and its complementary potential in the force space. The viscoplastic material, being a purely dissipative material, is ideally suited for this purpose. 01 09...

... of the crust was modeled by means of finite elements methods to solve Stokes equations for a strain-rate-dependent viscoplastic rheology. The model takes into account erosion effects using interface-tracking methods to assign fictitious properties to nonmaterial elements. 27 06 2005 17 04 2006...

...E. Mitsoulis; S. Sofou The lubrication approximation theory (LAT) is used to provide numerical results for calendering a sheet from an infinite reservoir. The Herschel–Bulkley model of viscoplasticity is employed, which reduces with appropriate modifications to the Bingham, power-law, and Newtonian...

...-third of the base length from the edge of the hole. 3 Final deformation for elastic VIB model (case 2) 4 Final deformation for viscoplastic VIB model (case 2) 5 Final deformation for viscoplastic VIB model (case 3) 6 Final deformation for viscoplastic VIB model...

... for by viscoplastic dissipation in the epoxy outside the cohesive zone. The minimum toughness of the coated sapphire interfaces was about five times higher than the mode-mix independent intrinsic toughness of the uncoated specimens. The increase in overall toughness with mode-mix was almost completely accounted...

...D. N. Robinson, Professor Emeritus; K. J. Kim; J. L. White, Director A constitutive theory is presented for a transversely isotropic, viscoplastic (Bingham) fluid. The theory accounts for threshold (yield) and viscous flow characteristics through inclusion of a potential function serving the dual...