Sfoglia per Soggetto "SOLIDS"
Items 1-8 di 8
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Analysis of Knoop indentation strain hardening effects
(2011)Knoop indentation tests are a standard method for material characterization due to the fact that they provide an easy, inexpensive non-destructive and objective method of evaluating basic properties from small volumes of ... -
Finite element implementation of gradient plasticity models - Part I: Gradient-dependent yield functions
(1998)Theories with intrinsic or material length scales find applications in the modeling of size-dependent phenomena such as, for example, the localization of plastic flow into shear bands. In gradient-type plasticity theories, ... -
Indentation of plastically graded substrates by sharp indentors
(2002)The present paper investigates the indentation of plastically graded substrates by sharp indentors. Contact analysis of plastically graded surfaces can be particularly useful in the design of load-bearing devices such as ... -
The influence of initial elastic surface stresses on instrumented sharp indentation
(2003)The present work examines the influence of pre-existing, elastic surface stresses on instrumented sharp indentation. The surface is modeled as a homogeneous and isotropic elastoplastic solid in the context of linear ... -
A Linear Complementarity formulation of rate-independent finite-strain elastoplasticity. Part II: Calculation of bifurcation and limit points
(2012)A methodology for the numerical solution of discretized boundary value problems that involve rate-independent, elastic-plastic finite-strain models is developed. The formulation is given in terms of a structural Linear ... -
Plane-Strain Problems for a Class of Gradient Elasticity Models-A Stress Function Approach
(2011)The plane strain problem is analyzed in detail for a class of isotropic, compressible, linearly elastic materials with a strain energy density function that depends on both the strain tensor epsilon and its spatial gradient ... -
A reciprocity theorem in linear gradient elasticity and the corresponding Saint-Venant principle
(2006)In many practical applications of nanotechnology and in microelectromechanical devices, typical structural components are in the form of beams, plates, shells and membranes. When the scale of such components is very small, ... -
A study of size effects and length scales in fracture and fatigue of metals by second gradient modelling
(2012)As the dimensions of structures are scaled down to the micro- and nano-domains, the mechanical behaviour becomes size dependent and thus, we cannot expect the classical elasticity solutions to hold. In particular, recent ...