... if it was uncurled? In other words, is the shock absorbing quality of a tentacle a necessity or just a convenient by-product of the rolling-in mechanism? longitudinal waves dispersion relation boundary layer cylindrical rod biomimetics elasticity plastic flow rods (structures) wave propagation...

... that it has a fractal dimension increasing from 0 toward 2 as the material transitions from elastic to perfectly plastic. While the grains possess sharp elastic-plastic stress-strain curves, the overall stress-strain responses are smooth and asymptote toward perfectly plastic flows; these responses...

... stresses plastic flow screw dislocations shear modulus 02 05 2008 03 10 2008 17 06 2009 2009 American Society of Mechanical Engineers ...

... dependency of the material behavior and the complex description of the plastic flow near stress-free voids. Both bounds (“dual bounds”) are adjusted to capture Gurson-like porous materials with noninteractive voids. General residual stresses (either real or virtual) are presented in the analysis...

... path (combined compression and torsion) from a uniaxial loading. A key point emerging from this study is that the structure impact response (i.e., the plastic flow mechanism and the absorbed energy) is influenced by the loading rate coupled with the biaxial loading complexity. In this study, three...

... earlier. By associating these two fields together, it is shown that they constitute a complete solution for the uncontained plastic flow problem around a finite length internal crack, having a positive rate of plastic work. The yield condition employed is an alternative criterion first proposed by Richard...

... buckling behavior of several tubular structures made from copper, aluminum, and mild steel. The effects of the loading path complexity, the geometrical parameters of the structures, and loading rates (notably the tangential one) on the plastic flow mechanism, the mean collapse load, and the energy absorbed...

... tectonics Earth crust erosion topography (Earth) viscoplasticity plastic flow finite element analysis The modeling of the processes related to crustal deformation, due to compression or extension, has been approached in a number of different ways in the last decade. On one side, models...

...Christian F. Niordson; Viggo Tvergaard In metal-ceramic systems the constraint on plastic flow leads to so high stress triaxialities that cavitation instabilities may occur. If the void radius is on the order of magnitude of a characteristic length for the metal, the rate of void growth is reduced...

... significantly the wavelength of the buckling mode for both material models as illustrated in Fig. 3 . Both anisotropic results now pass through the data with the deformation theory yielding the better agreement. shells (structures) buckling yield stress elasticity plasticity plastic flow internal...

... from zero, so that elongation is permitted. This assumption, together with axial symmetry and the isochoric nature of plastic flow, unambiguously defines the set of possible collapse mechanisms, and collapse loads are computed on this basis. Results are contrasted to those presently available, based...

... size 35 microns were used to make pellets of 35% porosity and 70% liquid saturation. As the capillary number increased, the failure mode changed from brittle cracking to ductile plastic flow. This change coincided with the transition from strain-rate independent flow stress to strain-rate dependent...

... in the ASME JOURNAL OF APPLIED MECHANICS . 28 February 2003 03 September 2003 07 09 2004 sheet materials plastic deformation plastic flow plasticity hardening The microstructure of a polycrystalline sheet metal generally evolves as it undergoes some finite plastic...

...N. Alexandrova; S. Alexandrov The plane state of stress in an elastic-plastic rotating anisotropic annular disk is studied. To incorporate the effect of anisotropy on the plastic flow, Hill’s quadratic orthotropic yield criterion and its associated flow rule are adopted. A semi-analytical solution...

... indentation internal stresses elastoplasticity work hardening plastic flow elasticity The effect of surface residual stresses is important in many applications of scientific and technological interest. Regarding instrumented indentation, surface residual stresses may affect considerably...

... itself in the ASME JOURNAL OF APPLIED MECHANICS . 30 November 1999 19 August 2002 27 03 2003 friction plastic flow modelling plasticity channel flow The situation with the solution for velocities is quite different. Of special interest is the distribution...

...C. Garion; B. Skoczen A simplified model of martensitic transformation in stainless steels at cryogenic temperatures is proposed. The constitutive modeling of plastic flow under cryogenic conditions is based on the assumption of small strains (⩽0.2). The hardening law for the biphase material (α...

...C. J. Lissenden 16 08 2002 aluminium alloys iron alloys plastic flow yield strength compressive strength tensile strength work hardening Bauschinger effect The author correctly identifies the backbone of metal plasticity as the Mises yield criterion, the Prandtl-Reuss...

...) extrusion rotation plasticity plastic flow composite materials multilayers Multilayered composite tubes offer a combination of properties suitable for a wide range of industrial applications. By comparison with single phase tubes there are obvious advantages of the composites in the practice...

... is the additive decomposition of the contact-area radius, and the correction of the curvature of the particles at the contact point due to plastic flow. The accuracy of the proposed model is validated against nonlinear finite element results involving plastic flow in both loading and unloading conditions. [S0021...