Showing papers in "International Journal of Solids and Structures in 1980"

TL;DR: In this article, the authors examined two aspects of the theory which treats localization of deformation as a bifurcation from homogeneous deformation, and showed that even for very small amounts of elasticity, even in the case of rigid plastic deformation it is possible to localize deformation in the rigid plastic case.

TL;DR: In this article, the effect of grain boundary sliding on anelasticity of polycrystalline materials is analyzed by using the finite element method and a self-consistent theory.

TL;DR: In this paper, the results of the separation of variables technique were confirmed by quite another method based on the use of finite differences, and the corresponding results for the antimetrical states of stress are evaluated.

TL;DR: In this paper, the effect of nonlinear material behavior on the buckling of an infinitely long cylindrical shell under pure bending was studied and the maximum moment and associated curvature was determined as a function of material and geometric parameters.

TL;DR: In this article, various phenomena associated with the large deformation compression of metal tubes between rigid plates are examined, and the relevance of these observations and the resulting theory to other plasticity problems involving bending as the primary mode of deformation is discussed.

TL;DR: In this article, the effect of grain boundary sliding on steady state creep of polycrystalline metals is analyzed by modeling the grain structure by an infinite two-dimensional array of regular hexagons in plane strain.

TL;DR: There is a direct correspondence between the integral equations of contact on a linearly elastic, homogeneous, transversely isotropic half-space and those on a similar isotropical half space as mentioned in this paper.

TL;DR: In this article, the longitudinal and shear phase velocities, and attenuation of longitudinal waves in the composite were determined as functions of frequency and the volume fraction of the inclusions.

TL;DR: In this paper, the fundamental equilibrium path, stable and unstable bifurcation points and snap-through critical point are introduced and the corresponding behaviors are studied for the growth regime of a system of straight edge cracks in plane strain.

TL;DR: For finite plastic deformations of porous metals and geotechnical materials such as cohesionless or cohesive soils, a theory is developed which accounts for plastic volumetric changes, pressure sensitivity, and microscopic frictional effects, and therefore involves a nonassociative flow rule as mentioned in this paper.

TL;DR: In this article, the structural rigidity of pin-jointed space trusses with cyclic symmetry is examined and the physical meaning of static and kinematic indeterminacy is presented.

TL;DR: In this paper, a theory for the growth of cracks in ductile materials is presented based on a kinetic law for the crack tip velocity v and a realistic real-time flow rate law for material non-elastic deformation.

TL;DR: In this article, a macroscopic theory for the dynamic response of a poled polycrystalline ferroelectric material describing its coupled electromechanical interactions is presented and the constitutive equations are linearized to illustrate the resulting dynamic response.

TL;DR: In this paper, the scattering of a time-harmonic antiplane shear wave by two parallel and coplanar Griffith cracks embedded in an infinite elastic medium is considered, and Fourier transformations are utilized to reduce the problem to two simultaneous integral equations which can be solved by the series expansion method.

TL;DR: In this paper, a numerical solution method for axisymmetric elastic bodies is presented for bending problems with arbitrary boundary conditions and demonstrated in detail for bending problem with two notch problems.

TL;DR: In this article, it is shown that part of the residual strain arises from rotation of the body, because, throughout the process it is subject to the stress σ, which is incorrectly ascribed to plastic flow.

TL;DR: In this paper, the buckling characteristics of cracked elastic plates subjected to uniaxial tensile loads are analyzed by aid of a finite element method based upon linear bifurcation theory.

TL;DR: In this paper, the constitutive equations for strain hardening and strain softening-hardening metallic materials have been developed within the framework of the endochronic theory of viscoplasticity.

TL;DR: In this article, the response of an imperfection-sensitive idealised model with elastic-plastic springs to simulate material plasticity was examined using theoretical and numerical methods, and various results indicated that dynamic plastic buckling is imperfection sensitive particularly for "direct" and "indirect" dynamic buckling.

TL;DR: In this article, the exact (Navier) solution of the specially orthotropic plate equilibrium equations with the Tsai-Hill failure criterion was used to transform the initial failure analysis of fiber reinforced laminated plates into an optimisation problem.

TL;DR: In this article, a one dimensional large displacement theory for plane-curved members with thin-walled open sections was established for the analysis of lateral-torsional buckling of circular arches.

TL;DR: In this article, a method for the solution of unilateral problems arising in structural mechanics is presented, based on some theorems of quadratic programing and combines the advantages of the optimization algorithms (systematic choice of the iteration steps and convergence) with the advantage of "trial and error" methods (use of general purpose programs which treat effectively large problems).

TL;DR: In this article, the qualitative behavior of the constitutive relation σ = E(ϵ, σ)ϵ + G (ϵ and σ), where σ is the number of variables in the relation.

TL;DR: In this paper, a viscoplasticity theory based upon a nonlinear viscoelastic solid, linear in the rates of the strain and stress tensors but nonlinear in the stress tensor and the infinitesimal strain tensor, is investigated for isothermal, homogeneous motions.

TL;DR: A theory for the wrinkling of honeycomb sandwich beams is presented in this article, which satisfies the governing elasticity equations for the orthotropic core and laminated faces, and a single eighth order ordinary differential equation is obtained which is solved by assuming a simple sine function for the displacement of the buckled face.

TL;DR: In this paper, the second-order work inequalities for stability of plastic strain increments and fracturing stress decrements are studied, and the endochronic loading surface is shown to be a tacitly implied hypothesis which does not follow from Drucker's postulate and the existence of the loading surface.

TL;DR: In this paper, the quasi-static behavior of a circular cylindrical elastic bar which is partially embedded in a saturated elastic half-space is investigated. But the authors only consider the case where the bar is subjected to a lateral force and a moment at a top end.

TL;DR: In this paper, it was shown that the post-bifurcation solution curve connects the two bifurcation points and that the spherical configuration is regained upon further inflation.

TL;DR: In this article, the linear and non-linear dynamic behavior of plates at elevated temperatures is examined and analytical solutions for the buckling and post-buckling behavior are obtained, which may be interpreted as an extension of Williams analysis of long narrow plates, for plates of finite aspect ratio.