.... A simple shear problem of a metal layer between rigid boundaries is analyzed. Two stages of plastic deformation are considered. In stage I, the plastic strain is taken to be zero at the boundaries. Stage I ends when a specified magnitude of the plastic strain gradient is attained at the boundaries...

...J. J. Lawrie; F. J. Mostert; P. J. König; K. D. Werneyer The use of the gamma-ray absorption technique as a tool in evaluating the quality of manufactured powder metal liners was investigated. With powder metal liners, it is not only of interest to know whether the liner conforms geometrically...

... solution. For soft metallic materials, metals at high temperature, rough surfaces, or dry contacts with high friction coefficient, the yield stress within the material could be easily exceeded even at low normal load. This paper presents the effect of a cuboid of uniform plastic strain in a half-space...

...Florin Bobaru We present a numerical approach for material optimization of metal-ceramic functionally graded materials (FGMs) with temperature-dependent material properties. We solve the non-linear heterogeneous thermoelasticity equations in 2D under plane strain conditions and consider examples...

...Z. Wei; M. Y. He; A. G. Evans The present paper describes an investigation that implements and assesses a dynamic continuum constitutive law for all-metallic sandwich panels. It also demonstrates its application to multilayer panels subject to water blast. Finite element calculations of unit cells...

... map that takes as axes the ratios of the time scales. 20 10 2005 16 02 2006 metals beams (structures) sandwich structures foams finite element analysis compressive strength cavitation bending elasticity shipbuilding industry 2 3 The underwater blast resistance...

...Yueming Liang; Alexander V. Spuskanyuk; Shane E. Flores; David R. Hayhurst; John W. Hutchinson; Robert M. McMeeking; Anthony G. Evans Metallic sandwich panels subject to underwater blast respond in a manner dependent on the relative time scales for core crushing and water cavitation. This article...

...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...

...D. L. Marshall; M. E. Taylor; Y. Ivshin; G. Diderrich; T. J. Pence We consider a boundary value problem for a flat plate of an originally ductile metal that is subject to surface corrosion. Corrosion is modeled with the aid of two mobile interfaces. The leading interface is an oxidation front where...

...Z.-H. Jin, Mem. ASME; G. H. Paulino, Mem. ASME; R. H. Dodds,, Jr.,, Mem. ASME This work studies mode I crack growth in ceramic/metal functionally graded materials (FGMs) using three-dimensional interface-cohesive elements based upon a new phenomenological cohesive fracture model. The local...

..., and will be accepted until four months after final publication of the paper itself in the ASME JOURNAL OF APPLIED MECHANICS . 01 March 2001 12 June 2001 plasticity metals aluminium alloys work hardening yield strength yield stress finite element analysis In his book, Studies...

..., 1999; final revision, May 5, 2000. Associate Technical Editor: R. C. Benson. 30 June 1999 05 May 2000 jets capillarity oxidation soldering metals drops surface tension elasticity Physical phenomena involving droplet generation and transport mechanisms are of central...

...W. Scherzinger, Mem. ASME; N. Triantafyllidis, Fellow ASME In this paper is presented a general methodology for predicting puckering instabilities in sheet metal forming applications. A novel approach is introduced which does not use shell theory approximations. The starting point is Hill’s...

... stress analysis forming processes metals As an application of the general methodology of Part I, we study the puckering instability of the hemispherical cup test. The reasons for the choice of this problem are threefold: (a) relative analytical simplicity, (b) easy calculation of membrane...

...L. G. Hector,, Jr.; J. A. Howarth; O. Richmond, Mem. ASME; W.-S. Kim A theoretical model that predicts the time and position of gap nucleation along the metal-shell interface during solidification of a pure metal on a sinusoidal mold surface is presented. The ratio of the mold surface amplitude...

... known as the shear band in metals under a monotonic loading. Based on the prior analyses of fatigue bands in polycrystals, a micromechanic analysis of a single crystal under plane deformation is developed. The Bauschinger effect and hysteresis loops of these single crystals were calculated and shown...

...F. Yigit; L. G. Hector,, Jr. A theoretical model of the gap nucleation process during pure metal solidification on a deformable mold of finite thickness is presented. Both surfaces of the mold follow a sinusoidal lay for which the ratio of the amplitude to the wavelength, or aspect ratio, is much...

... after final publication of the paper itself in the JOURNAL OF APPLIED MECHANICS . 09 Mar 1999 30 Sept 1999 solidification nucleation metals casting In the companion paper, a theoretical methodology was developed for an idealized solidification process in which...