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Showing papers in "International Journal of Solids and Structures in 1999"


Journal ArticleDOI
TL;DR: Schapery and Park as discussed by the authors presented an approximate analytical interconversion method for linear viscoelastic material functions based on a Prony series representation using experimental data from selected polymeric materials.

552 citations


Journal ArticleDOI
TL;DR: In this paper, a structural damage detection technique based on wavelet analysis of spatially distributed structural response measurements is proposed, which does not require any analysis of the complete structure in question nor any knowledge of the material properties and prior stress states of the structure.

310 citations


Journal ArticleDOI
TL;DR: In this article, a phenomenological model of macroscopic ferroelectricity for general electro-mechanical loading histories is presented, which is simple enough to be implemented in an FE-code with realistic effort.

231 citations


Journal ArticleDOI
TL;DR: Park and Schapery as mentioned in this paper proposed an approximate interconversion method based on the characteristic mathematical properties of the narrow-band weight functions involved in the interrelationships between broad-band material functions.

227 citations


Journal ArticleDOI
TL;DR: In this article, a three-dimensional cohesive element and a class of irreversible cohesive laws were developed to enable the accurate and efficient tracking of three dimensional fatigue crack fronts and the calculation of the attendant fatigue life curves.

223 citations


Journal ArticleDOI
TL;DR: In this article, an extensive three-dimensional numerical study has been carried out on the diffuse necking behavior of tensile specimens made of isotropic materials with rectangular cross-section, and an approximate relation is established between the area reduction of the minimum cross-sectional and the measured thickness reduction.

213 citations


Journal ArticleDOI
TL;DR: In this article, the scaling relationships for conical indentation into elastic-perfectly plastic solids were derived using dimensional analysis and finite element calculations, which provided new insights into the shape of indentation curves and formed the basis for understanding indentation measurements, including nano-and micro-indentation techniques.

212 citations


Journal ArticleDOI
TL;DR: A phenomenological void-crack nucleation model for ductile metals with second phases is described in this paper, which is motivated from fracture mechanics and micro-scale physical observations, and the model is a function of the fracture toughness of the aggregregate material, length scale parameter (taken to be the average size of the second phaseparticles in the examples shown in this writing), the volume fraction of second phase, strainlevel, and stress state.

202 citations


Journal ArticleDOI
TL;DR: In this article, the same honeycomb is crushed biaxially in a custom testing facility between rigid platens which can be moved independently in two orthogonal directions, and the results showed that the highest energy is required when the specimen is crushed at the same rates in the same directions.

191 citations


Journal ArticleDOI
TL;DR: In this article, the in-plane biaxial crushing experiments on polycarbonate honeycomb presented in Part I are simulated using large scale finite element models, which account for nonlinearities in geometry and due to contact.

159 citations


Journal ArticleDOI
TL;DR: In this article, the memory kernel is examined with respect to its regularity and asymptotic behavior and a closed form expression for the memory kernels corresponding to the fractional derivative model of viscoelasticity is given.

Journal ArticleDOI
TL;DR: In this paper, it was shown that any type of material damage that causes stiffness degradation in general requires description by an eighth order damage tensor but that the principle of strain equivalence permits a reduction to a tensor of order four.

Journal ArticleDOI
TL;DR: In this article, the effective elastic behavior of some models for low density cellular solids, or solid foams, are calculated using analytical and numerical techniques, and they are perfect in the sense that imperfections or irregularities as often encountered in real foams have been removed.

Journal ArticleDOI
TL;DR: In this paper, a general formulation is presented and then specialised to the case of rectilinear laminated beams and numerical aspects concerning finite element implementation are discussed together with a local control algorithm for the treatment of unstable paths.

Journal ArticleDOI
TL;DR: In this paper, the authors studied the two-dimensional crack problem in a piezoelectric material containing an elliptic hole subjected to uniform remote loads and showed that the field intensity factors are the same as that of isotropic material.

Journal ArticleDOI
TL;DR: In this article, a finite element model of switching in polycrystalline ferroelastic ceramics is developed, where the reduction in mechanically driven potential energy of the system exceeds a critical value per unit volume of switching material.

Journal ArticleDOI
TL;DR: In this article, a micromacro thermomechanical modelization of grain behavior of a polycrystalline shape memory alloy is presented, based on thermodynamic approach and identification of stress sources, taking into account experimental observations of the transformation microstructure.

Journal ArticleDOI
Mohamad S. Qatu1
TL;DR: In this paper, the authors derived accurate equations of elastic deformation for laminated composite deep, thick shells, including shells with a pre-twist and accurate force and moment resultants which are considerably different than those used for plates.

Journal ArticleDOI
TL;DR: In this article, a finite element formulation of the piezoelectric vibrations of quartz resonators based on Mindlin plate theory is derived, and the vibration frequency, the vibration mode shapes and the electric potential distribution are obtained.

Journal ArticleDOI
TL;DR: In this article, a model for nonlinear finite element structural analysis of woven fabrics with nonlinear stress-strain relations was developed and implemented for structural analysis under static and dynamic loads.

Journal ArticleDOI
TL;DR: In this article, the authors investigated the stress concentrations near a single fiber break in a unidirectionally reinforced fiber composite using a shear lag theory within the framework of finite elements.

Journal ArticleDOI
TL;DR: In this article, the decay rates for disturbances at the ends of prismatic anisotropic beams are evaluated, and the most influential end disturbances are incorporated into a refined beam theory from the variational-asymptotic point of view.

Journal ArticleDOI
TL;DR: In this article, the authors considered the interface crack problem of a bimaterial thermopiezoelectric solid by applying the extended version of Strohs formalism and singular integral equation approach.

Journal ArticleDOI
TL;DR: In this article, a projective covering method (PCM) is proposed to estimate the fractal dimension of a fracture surface based on the measurements using a laser scanner, and the results agree with the theory of fractal geometry and measurement data.

Journal ArticleDOI
TL;DR: In this paper, a strain-based transient-gradient damage model is used to analyze and describe the experimentally observed failure process in a Compact-Tension test carried out on short glass-fibre-reinforced polypropylene.

Journal ArticleDOI
TL;DR: In this article, the minimum weights of columns having solid square or circular cross-sections are compared with those of similar metal-foam-filled tubes, hollow tubes and tubes whose walls are foam-core sandwiches.

Journal ArticleDOI
TL;DR: In this article, a fractional derivative model of linear viscoelasticity based on the decomposition of the displacement field into an anelastic part and elastic part is developed.

Journal ArticleDOI
TL;DR: In this paper, the Boundary Integral Equations (BIE) for linear elasticity have been coupled with Moving Least Square (MLS) interpolants; this procedure exploits the meshless attributes of the MLS and the dimensionality advantages of the BIE.

Journal ArticleDOI
TL;DR: In this article, a regularized form of the conventional direct boundary integral equation formulation for three-dimensional elastodynamics is presented for a general anisotropic medium, based on a full decomposition of the Greens functions into regular and singular parts.

Journal ArticleDOI
TL;DR: In this paper, a physically sound three-dimensional anisotropic formulation of the standard linear viscoelastic solid with integer or fractional order rate laws for a finite set of the pertinent internal variables is presented.