Showing papers in "International Journal of Solids and Structures in 1993"

TL;DR: In this paper, the authors extended the dilute, self-consistent, Mori-Tanaka and differential micromechanics theories to consider the coupled electroelastic behavior of piezoelectric composite materials.

TL;DR: The Singular Value Decomposition of the equilibrium matrix makes it possible to answer any question of a static, kinematic, or static/kinematic nature for any structural assembly, within a unified computational framework as discussed by the authors.

TL;DR: In this paper, an algorithm for the derivation of damage tensors emphasizing its relationship with the actual and approximate crack density distributions is presented, illustrated using scalar, second and fourth order continuous tensor approximations of some typical two and three dimensional crack distributions.

TL;DR: In this paper, a nonlinear finite element procedure is developed which incorporates a thermodynamically derived constitutive law for shape memory alloy material behavior, and the constitutive equations include the necessary internal variables to account for the material transformations.

TL;DR: In this article, the differential quadrature method is used to analyse the deflection, buckling and free vibration behavior of anisotropic rectangular plates under various boundary conditions, and the roots of Chebyshev polynomials are used to obtain grid-point locations.

TL;DR: In this article, a numerical integration method for the interface constitutive laws is proposed, and the related consistent tangent modulus is derived, and an algorithm for the structural analysis in the presence of softening interfaces is presented.

TL;DR: In this paper, a non-linear finite element analysis for free edge delamination of uniaxially stressed layered specimens is simulated using nonlinear finite elements analysis, and the results are in good agreement with experimental evidence and do not suffer from spurious mesh dependence.

TL;DR: In this article, the authors deal with the calculation of the transverse shear moduli of a honeycomb sandwich panel by making a finite element study of a representative unit cell.

TL;DR: In this paper, a crack in a strip of Functionally Gradient Material mathematically modeled by a nonhomogeneous solid with the prescribed surface temperature is studied, where all material properties depend only on the coordinate y (perpendicular to the crack faces) in such a way that the properties are some exponential functions of y.

TL;DR: In this article, an analytical model for the prediction of the thermoelastic properties of composite laminates containing matrix cracks is presented, and the model has been verified against numerically determined stiffnesses, thermal expansion coefficients, strain contributions from release of residual stresses and local average ply stresses and strains do solely contain known ply property data and matrix crack densities.

TL;DR: In this paper, the authors measured the Butt tensile strength of a joint that bonds two stainless steel rods together with an unfilled epoxy adhesive (Epon 828/T-403).

TL;DR: In this paper, a continuum model that incorporates a dependence upon the Laplacian of the inelastic strain is used to regularize the initial value problem that results from the introduction of strain softening or non-associated flow.

TL;DR: In this article, the authors proposed to use the loss of strong ellipticity criterion as a necessary condition for localization of elastic materials. But they only considered the symmetric part of the tangent modulus tensor of the acoustic tensor.

TL;DR: In this paper, a fully nonlinear theory for the dynamics and active control of elastic laminated plates with integrated piezoelectric actuators and sensors undergoing large-rotation and small-strain vibrations is presented.

TL;DR: In this paper, a complete and consistent set of equations for the analysis of laminated composite curved beams and closed rings is derived for thin and moderately thick curved beams, including rotary inertia and shear deformation as well as accurate kinematic relations are included in the moderately thick beam equations.

TL;DR: The conditions for localization and wave propagation in a strain softening material described by a nonlocal damage-based constitutive relation are derived in closed form in this article, where the criterion for bifurcation is reduced to the classical form of singularity of a pseudo acoustic tensor.

TL;DR: In this paper, a damage model for brittle materials subject to arbitrary stress is developed by considering dilute distributions of flat microcracks, self-similarly propagating in a linear elastic matrix, constitutive equations are obtained taking into account both stress-and damage-induced anisotropy.

TL;DR: In this paper, a continuum three-dimensional Ritz formulation for the vibration analysis of homogeneous, thick, rectangular plates with arbitrary combinations of boundary constraints is presented, where the displacement fields in the transverse and in-plane directions are expressed by sets of orthogonally generated polynomial functions.

TL;DR: In this article, a refined finite-rotation theory with seven independent displacement variables is developed, approximating the displacement field by a cubic series expansion of thickness coordinates, which allows a quadratic shear deformation distribution across the thickness.

TL;DR: The exact and approximate analysis of composite members with partial interaction and subjected to general dynamic loading are presented in this article, where general closed-form solutions for the displacement functions and the various internal actions in the composite elements are presented for both the exact and the approximate cases.

TL;DR: In this article, a cycloid wavy surface subject to a uniform bulk stress is adopted as a model problem, and the elastic stress and displacement fields are determined using Muskhelishvili's conformal mapping method.

TL;DR: A mathematical programming algorithm is proposed for the general limit analysis problem where plastic behavior is described by a set of linear or nonlinear yield functions and a Quasi-Newton strategy for solving the optimality conditions is sketched.

TL;DR: In this article, the fracture toughness of thin-film composites is determined as a function of the critical loads needed to cause delamination, and closed-form solutions for the energy-release rate and mixedness of modes have been derived for circular crack fronts.

TL;DR: In this paper, linear Timoshenko-Reissner theories of isotropic plates and shells are discussed and the main subject under consideration is the construction of these theories by the asymptotic method and related error estimates for static and dynamic problems.

TL;DR: In this paper, the authors investigated the potential application of a free-edge stress intensity factor (Kf) based failure criterion to butt tensile joints and found that when residual cure stress can be neglected, the region dominated by the interface corner singularity is reasonably large relative to adhesive layer thickness, and the plastic yield zone is contained within the singular field at nominal failure loads.

TL;DR: In this paper, a micro-mechanical model is employed to study the elastic stress-strain behavior of heterogeneous granular solids, where the granular material is idealized as a collection of spherical particles interacting through inter-particle contacts.

TL;DR: In this paper, a systematic method is presented for estimating the overall properties of solids with periodically distributed cracks, in view of the periodicity, the displacement, strain and stress fields of the cracked solid can be expressed in Fourier series.

TL;DR: In this paper, a new domain integrals for axisymmetric interface crack problems are derived, where the specification and subsequent treatment of auxiliary fields for the extraction of mixed-mode stress intensity factors using interaction energy integrals are given.

TL;DR: In this article, a unified continuum approach to brittle and fatigue damage is presented, where a scalar variable is used to represent the damage state and general forms of the constitutive equations are established on a thermodynamic basis.

TL;DR: In this article, a method for fracture analysis of a general two-dimensional system containing multiple holes, or voids, and cracks is presented, based on two types of fundamental solutions: point loads in a solid with a hole and the other due to point dislocations in an infinite elastic body.