Showing papers in "International Journal of Engineering Science in 1989"

TL;DR: In this article, the authors developed analytical solutions for displacements, natural frequencies and buckling loads of cross-ply circular cylindrical shells under various boundary conditions using the classical, first-order and third-order shell theories and the state-space technique.

TL;DR: In this article, the main arguments which are necessary to construct the electric hysteresis loop are discussed, and the effects of different types of couplings with the stress (e.g. piezoelectric and electrostrictive) on the overall shape of the electric hydresis curve and the coercive field are discussed.

TL;DR: In this article, the authors presented some possible scenarii of hysteresis and loading paths which can be envisaged through electromechanical couplings in a ferroelectric circular cylinder subjected to torsion and a longitudinal electric field.

TL;DR: In this paper, a boundary-discontinuous double Fourier series based approach for solution to a system of completely coupled linear second-order partial differential equations with constant coefficients and subjected to general (completely coupled) boundary conditions is presented.

TL;DR: In this paper, an analysis and comparison of several shear deformable bending theories of composite laminated anisotropic plates currently encountered in the field literature are given in a unitary way, it is shown in fact only different formulations of a single theory, generically designated as the moderately thick plate theory.

TL;DR: In this paper, combined free and forced convection in the boundary layer flow of a micropolar fluid over a horizontal surface is studied, and the influence of uniform mass transfer from the surface is also considered.

TL;DR: In this paper, the deformation of a single crystal is approximated by a simple shear on crystallographic habit planes, and the results are compared with the observed behaviour of shape memory alloys.

TL;DR: In this article, the authors investigated the Benard problem for a thermomicropolar fluid and showed that stationary convection is the physically realizable mode whereas oscillatory convection occurs only at very high Rayleigh numbers and then only when the layer is heated from above.

TL;DR: In this article, the authors derived basic equations and boundary conditions for thin elastic plates (carrying static bias E-M fields) and disturbed by dynamical perturbations, both flexural and in-plane motions are considered.

TL;DR: In this article, the feasibility of using ultrasonic nondestructive evaluation (NDE) methods to determine the quality of bonds in structural components is considered and the severe limitations of conventional NDE method in yielding quantitative results are indicated.

TL;DR: In this article, the authors consider the problem of an incompressible elastic solid sphere, composed of a neo-Hookean material, which is set into motion by a suddenly applied uniform radial tensile deadload p 0 on its boundary.

TL;DR: In this paper, a model for anisotropic damage is presented for both the quasi-static and dynamic cases, in the assumption of small elasto-plastic deformations but without restriction to small damage.

TL;DR: In this paper, the authors established a class of multiple site self-consistent schemes for which an elementary heterogeneous cell is defined, composed of an inclusion and its first neighbours and located in the homogeneous equivalent medium.

TL;DR: In this paper, a steady, incompressible micropolar fluid flow and heat transfer over a stretching sheet has been analyzed and the resulting system of non-linear ordinary coupled differential equations is solved by finite element method using variational Ritz model.

TL;DR: In this article, the authors considered the class of cracks of arbitrary size and orientation near bimaterial interfaces between dissimilar anisotropic materials and computed stress intensity factors for such cracks by numerically solving singular integral equations derived using the complex variable formulation of Lekhnitskii.

TL;DR: In this paper, the dynamic response of a circular footing experiencing oscillatory vertical motion on the surface of a liquid-filled, porous, elastic half-space is reduced to the solution of a Fredholm integral equation of the second kind.

TL;DR: In this article, the authors present results from a theoretical analysis of a model which simulates Mode I plane strain crack extension in a strain-softening material, focusing on the fully developed softening zone size associated with a semi-infinite crack in a remotely loaded infinite solid.

TL;DR: In this article, it was shown that for the Benard problem of thermal instability of a horizontal layer of expansible liquid heated from below, it is necessary to consider two cases in relation with the depth of the layer.

TL;DR: In this paper, the steady laminar flow of a liquid metal in a circular duct with electrically insulating wall in the presence of a strong transverse non-uniform field is investigated.

TL;DR: In this article, a gauge-theoretic approach for modeling continuous distributions of defects in solids is undertaken, based on local internal and external symmetries of an appropriate Lagrangian for those materials.

TL;DR: In this article, the plane wave propagation in nonlinear micropolar solids is asymptotically investigated, and it is shown that wave motion is governed by coupled Modified Korteweg-de Vries equations.

TL;DR: In this article, the existence theorems originally obtained in [1] are modified to take account of the regularity conditions that must be imposed on the corresponding single-and double-layer potentials in the boundary integral equation method.

TL;DR: In this paper, complex modified Korteweg-de Vries (CMKdV) equation describing far-field behaviour of a general micropolar solid obtained in [1] is first examined in the case of quadratic solid.

TL;DR: In this paper, the boundary value problems of doubly-curved shear-flexible orthotropic shells of rectangular planform have been solved using a double Fourier series approach, which takes into account the ordinary discontinuities of the assumed solutions and/or their first derivatives.

TL;DR: In this article, a nonlinear surface acoustic wave analysis on an anisotropic elastic half-space is adapted to include nonlinear electroelastic interaction, where only quadratically nonlinear terms are retained.

TL;DR: In this article, the Vickers indentation is simulated by motion of prismatic square dislocation loops created at the loaded surface, and surface displacement and stress fields are calculated by a dislocation model.

TL;DR: In this paper, the buoyancy effects on the forced convective micropolar fluid flow and heat transer on vertical continuous moving cylinder were studied using the theory of Eringen.

TL;DR: In this article, the Galerkin method is used to solve nonlinear wave propagation problems in finite regions (e.g. resonators), where the displacement at the first partial mode, placed in a bias magnetic field, is altered both in amplitude and velocity.

TL;DR: In this article, the stream function, temperature, and flow and heat transfer characteristics were investigated by solving the coupled nonlinear partial differential equations describing the conservation of mass, momentum and energy by a perturbation technique.

TL;DR: In this paper, the electromagnetic field is decomposed into two mutually independent circularly-polarized states, and Coupled first-order differential equations are derived to describe the fields, and various solution procedures discussed.