... in the homogenization process, the plastic flow acting on the microscopic truss members gives rise to extend the elastic domain of the analytical stress function derived from homogenize constitutive equations at the macroscale level. Analytical stress predictions show excellent agreements with the results obtained from...

.... , 13 , pp. 641 – 643 . 10.1007/BF00859358 11 Negahban , M. , Goel , A. , and Zhang , L. , 2009 , “ Evaluating the Development of Elastic Anisotropy With Plastic Flow ,” Acta Mech. , 208 , pp. 259 – 267 . 10.1007/s00707-009-0139-6 12 Goel , A. , Strabala , K...

...–Mechanical Modeling of Polymers and Composites,” Polym. Sci. Ser. A, 48, pp. 1004–1013) of semicrystalline polymers. It is supposed that increase in the interlamellar nanovoid volume fraction results in speeding-up the plastic flow rate while decreasing cavitation rate. Consequently, a proper fitting...

... and athermal components of the flow stresses. Finally, a thermal activation analysis was performed. annealing ductility elongation plastic flow pressing softening steel stress-strain relations tensile testing thermal analysis yield strength rephosphorized interstitial free steel tensile...

... metallic thin films plastic flow plasticity surface energy work hardening yield strength size effect interfaces surface energy temperature thin film Plasticity in heterogeneous materials with small volumes (e.g., thin films, thin wires, grains in polycrystals, and particles...

... 2009 18 02 2010 18 02 2010 copper melting plastic flow tantalum constitutive relations plastic behavior In order to understand many high-strain-rate events, an experimental approach may offer the most accurate results. However, the time and cost constraints hardly...

... stress field evolution. Notably, relaxation has been correctly simulated in the low-cycle fatigue regime and imputed to plastic flow in compression when the superposition of compressive residual and bending stresses exceeds the local cyclic yield strength of the material. Conversely, the residual stress...

... the grain shape effect together with the new viscous parameter γ on the strain-stress behavior of aluminum and Waspaloy under tensile test. 07 01 2009 28 03 2009 03 11 2009 03 11 2009 elasticity grain size hardening plastic flow SCF calculations stress-strain relations...

... are necessary to manufacture automotive structures, high final resistance values are required in the final parts. aluminum heat treatment warm forming aluminium alloys automotive materials deformation ductility plastic flow precipitation hardening tensile strength 12 05 2008 09...

... , Oxford, UK . Sundararajan , G. , and Tirupataiah , Y. , 2006 , “ The Localization of Plastic Flow Under Dynamic Indentation Conditions: I. Experimental Results ,” Acta Mater. 1359-6454 , 54 , pp. 565 – 575 . 10.1016/j.actamat.2005.09.022 Hertzberg , R. W. , 1996...

...Russell J. McDonald; Christos Efstathiou; Peter Kurath The purpose of this work is to explore nonuniform plastic flow at small length- and time-scales. Pure single crystal copper tensile specimens were pulled along the [ 6 ¯ 5 6 ] crystal axis at three nominal strain-rates: 0.01%/s, 0.04%/s...

... conditions typical of industrial processes, such as rolling. 24 06 2008 04 12 2008 29 05 2009 aluminium alloys compressive testing deformation high-temperature effects hot rolling plastic flow work hardening The use of aluminum alloys in engineering applications...

..., but there is a threshold for embedded fiber volume fraction at specific parameters, over which the plastic flow and friction may be insufficient to have a strong bond at foil/foil interfaces between fibers. The study also showed that base metal thickness did not have significant influence on the interfacial strength...

..., and conical). The indentation stress-displacement curve at large strains is linear as a result of the steady-state plastic flow, from which the mean indentation pressure, a measure of yield strength, can be readily extrapolated. The indentation stress-displacement response is independent of the indenter...

... than that of the DC material. 29 06 2007 06 12 2007 22 05 2008 aluminium alloys fracture mechanical testing plastic flow shear strength sheet materials stress-strain relations The mechanical behavior of aluminum alloys at large strain is of considerable interest...

... copper alloys cracks magnesium alloys plastic flow point defects slip thermomechanical treatment voids (solid) X-ray scattering aluminum Guinier radius nanovoids quenching SAXS strain rate sensitivity thermally activated deformation Plastic flow in crystalline solids is made...

.... For general material types, it is shown that it is possible to have a state of spreading plastic flow, but as the elastic-plastic boundary advances, the conditions for yielding on it can change over to conditions for brittle failure because of the evolving stress state. The general theory is of a three...

... tool steel cold working plastic flow yield strength elastic moduli When deforming metals, the force required to maintain material flow controls many process parameters, such as: tooling strength, equipment size, and energy expenditure; ultimately affecting overall part cost. This force...

... of coefficients of friction in the forming zone. The present authors have published a series of works on tube hydroforming. For example, they used the finite element method to explore the plastic flow pattern of a circular tube hydraulically expanded or crushed into various cross sections ( 8 9 10 ). They also...

...Wei Tong; Nian Zhang Temporal and spatial characteristics of serrated plastic flow or the so-called Portevin-Le Chatelier (PLC) deformation bands in a commercial Al - 2.5 % Mg sheet metal due to dynamic strain aging effects were investigated experimentally under quasi-static uniaxial tension...