Showing papers in "International Journal of Solids and Structures in 1997"

TL;DR: In this paper, the analysis of laminated composite plate structures with piezoelectric actuators and sensors is presented, where the authors implement layerwise representations of displacements and electric potential, and can model both the global and local electromechanical response of smart composite laminates.

TL;DR: In this paper, the authors present analytical and computational results on the evolution of stresses and displacements due to indentation from a normal point force on an elastic substrate whose Young's modulus E varies as a function of depth, z, beneath the indented surface.

TL;DR: In this article, the authors developed a cavity expansion penetration model for concrete targets based on idealized pressure-volumetric strain as incompressible or linear compressible and idealized shear strength-pressure as Mohr-Coulomb with a tension cutoff.

TL;DR: In this article, the authors presented analytical and computational results for the evolution of stresses and deformation fields due to indentation from a rigid axisymmetric indentor on an elastic substrate.

TL;DR: In this paper, a semi-infinite crack in a strip of an isotropic, functionally graded material under edge loading and in-plane deformation conditions is analyzed, and the effects of material gradients on the mode I and mode II stress intensity factors and the phase angle used to measure mode mixity are determined.

TL;DR: In this article, it was shown that any structure consisting of rigid, multi-angulated rods with kinks at the hinge positions can be folded if the rods form a tessellation of parallelograms.

TL;DR: In this paper, a micromechanical approach for defining the properties of a periodic masonry material is proposed, where the damage is due to the coalescence and growth of the fractures only in the mortar.

TL;DR: In this paper, a critical value of K n r δ (δ K n ) was determined for notched mode I three-point flexure specimens using a combination of the Williams (Williams, M. L. (1952) asymptotic method, dimensional considerations, and detailed finite element analysis.

TL;DR: In this article, a new methodology for implementing the clamped and simply supported boundary conditions is presented for the free vibration analysis of beams and plates using the generalized differential quadrature (GDQ) method.

TL;DR: In this paper, the authors derived the stress-strain relationship of a granular system based on the best fit of actual particle displacements and derived two fundamental relationships: (1) the average strain as a function of contact displacements, and (2) the mean field of contact force as the function of stress.

TL;DR: In this article, a new apemu of microplane theory is achieved by systematically intro-ducing damage and plasticity concepts into the microplane framework, which can be easily related to von Mises plasticity and to the existing models based on the second and fourth-order damage tensors.

TL;DR: In this article, a 3D lattice Green's function model is used to calculate the stress field, damage evolution, and failure in composites under local load sharing (LLS) conditions in which the stress from broken fibers is transferred predominantly to the nearby unbroken fibers.

TL;DR: In this paper, the classical thermodynamics of irreversible processes, using material state variables, is further extended in order to incorporate more easily dynamic and static recovery effects in the kinematic hardening evolutionary equations.

TL;DR: In this paper, a viscoplastic framework is laid down for a wide class of constitutive properties where strain-hardening plasticity, creep and also nonlinear elasticity arise as special cases.

TL;DR: In this paper, the stiffness design of laminated plates subjected to single and multiple loads is considered and the stiffness of the laminates is parametrized in terms of the so-called lamination parameters.

TL;DR: In this article, an existing constitutive model, based upon thermodynamics of irreversible processes with internal state variables, is first reviewed and then used to describe the mechanical behavior of elastic and viscoelastic media with changing microstructure.

TL;DR: In this article, a new approach for implementing general boundary conditions in the GDQ free vibration analysis of rectangular plates is presented, which can be applied to any combination of simply supported, clamped, and free boundary conditions.

TL;DR: In this article, the role of the intensity H in controlling the initial growth of an interfacial edge crack embedded within the singularity zone is examined, and the implications of the results for the initiation of free-edge cracks are discussed.

TL;DR: In this paper, the electroelastic fields in and around inclusions and inhomogeneities in transversely isotropic piezoelectric solids were analyzed using Eshelby's pioneering approach.

TL;DR: In this article, the authors investigated the stability and vibration properties of two-dimensional axially moving plates and showed that the speed at the onset of instability increases as the ratio of the length to the width of the plate decreases and as the flexural stiffness increases.

TL;DR: In this paper, a macroscopic yield or failure criterion for fiber composite materials is derived for aligned fiber systems with a polymeric matrix phase under high fiber concentration conditions, and the resulting forms are quadratic in the components of the average stress tensor with two material parameters for each mode of yield/failure.

TL;DR: In this article, the authors compared the existing solutions for interfacial cracks in bimaterial media obtained from the contact model and oscillatory model, and found that the oscillatory near tip stress field was found to agree very well with that of contact model except for the extremely small contact zone.

TL;DR: In this paper, the problem of point force and point charge applied in the interior of an infinite two-phase transversely isotropic piezoelectric solid was considered and a series of displacement functions were constructed.

TL;DR: In this paper, the effects of size (both length and width) on the probability distribution for strength of a composite consisting of brittle fibers aligned in a brittle matrix is addressed. But the analysis is restricted to a single filament composite.

TL;DR: In this paper, a small crack deflection in brittle functionally graded materials (FGMs) is studied, where the cracks propagate along the direction of maximum energy release rate, or the direction which gives a vanished mode II stress intensity factor.

TL;DR: In this paper, a composite box beam model is developed for both thin- and thick-walled composite beams, and an efficient method to account for 3D elastic effects in laminated beam walls is developed.

TL;DR: In this article, a uniaxial model for shape-memory alloys, cast within the generalized plasticity framework, was presented, which reproduces the shape memory effect and the superelastic behavior; moreover, for loading-unloading cycles, without completion of the phase transition, it presents a cyclic response with internal loops.

TL;DR: In this paper, the authors presented the elastic solution of a layered half space with perfect interfacial bonding under an axisymmetrical compressive loading on the plane surface, which is intended to model the nano-indentation of thin-film coating/substrate systems.

TL;DR: In this paper, the effective transversely isotropic moduli of two hybrid composites containing both partially debonded and perfectly-bonded spheroidal inclusions are derived.

TL;DR: In this paper, the exact relationship between the deflections, slopes/rotations, shear forces and bending moments of a third-order beam theory, and those of the Euler-Bernoulli theory and the Timoshenko beam theory are developed.