Showing papers in "International Journal of Engineering Science in 1991"

TL;DR: In this paper, a new standard plate theory, which accounts for cosine shear stress distribution and free boundary conditions for shear stresses upon the top and bottom surfaces of the plate, is presented.

TL;DR: In this article, it is shown that the homogenization process using double scale asymptotic developments appears to be the appropriate method giving the right answer to the question, which is emphasized in two simple examples.

TL;DR: In this article, the bonding of two solids by a thin adhesive layer is considered and the asymptotic expansion method is used to derive a model where the displacements vary linearly and the stresses are constant through the thickness of the adhesive.

TL;DR: In this paper, a linearized convective instability analysis of a ferromagnetic fluid saturating a porous medium subjected to a vertical magnetic field has been performed using Brinkman model.

TL;DR: In this article, a two layered cylindrical shell model for the upper thoracic aorta of a dog was presented, and a series of bi-axial tests were carried out on the specimens taken from the media and adventitia of an aortic segment and the stress-stretch relations were obtained.

TL;DR: In this paper, the problem of determining the location and the size of a linear crack in an electrically conducting two-dimensional medium was considered, where the probing device consists of a single pair of electrodes through which current is passed.

TL;DR: In this paper, the effect of thermal conductivity on the initiation and growth of shear bands in a structural steel block was investigated by analyzing the development of the shear band in a block undergoing overall adiabatic simple shearing deformations.

TL;DR: In this paper, the equations governing the flow of a two-component mixture of a Newtonian fluid and a granular solid are derived for steady pressure driven flow through a pipe of circular cross-section.

TL;DR: In this article, with the help of finite Hankel and Laplace transforms, analytic expressions for axial velocity, fluid acceleration, wall shear and instantaneous volume flow rate have been obtained.

TL;DR: In this article, a series of technical data for preparing PbTiO3 and its related thin films by using various methods such as rf sputtering and chemical vapor deposition are described.

TL;DR: In this article, the symmetry groups associated with a system of balance equations of arbitrary order involving n independent and N dependent variables are discussed by employing exterior calculus, and the infinitesimal generators of symmetry groups are components of isovectors fields of the closed ideal of certain exterior differential forms corresponding to an equivalent first order system of equations.

TL;DR: In this article, the authors studied the generation of stress and magnetic fields in a solid cylindrical continuum subjected to ramp-type heating on its surface when the cylinder and its adjoining vacuum is subjected to a uniform axial magnetic field.

TL;DR: In this article, a simple refined theory of anisotropic laminated composite shell-type structures is substantiated, which is based upon discarding the Love-Kirchhoff hypothesis and incorporates transverse shear deformation effect, the geometrical nonlinearities and fulfills the geometric and static continuity conditions between the contiguous layers.

TL;DR: In this article, a solution for the induced temperature and stress fields in an infinite transversely isotropic solid continuum with a cylindrical hole was given, where the solid medium is considered to be exposed to a magnetic field and the cavity surface is assumed to be subjected to a ramp-type heating.

TL;DR: In this article, a generalized bifurcation for incrementally nonlinear constitutive equations is presented, where both the deformation gradient and the incremental constitutive stiffness can be discontinuous across the shear band.

TL;DR: In this paper, a numerical study of fully-developed turbulent flow past a backward-facing step is performed to analyze the effect of mesh refinement on the computed results, and the time averaged equations of conservation of mass and momentum are solved by a finite-volume method using two versions of the K-e model of turbulence.

TL;DR: In this article, the amplitude of an acceleration wave is predicted to become infinite after only a finite distance of propagation and it is widely believed that this corresponds to the formation of a shock wave, though no proof appears to have been given.

TL;DR: In this paper, the authors present a linear stability analysis for the fully developed liquid-metal now in a constant-area rectangular duct with thin metal walls and with a strong, uniform, transverse magnetic field.

TL;DR: In this paper, the authors investigated the longitudinal wave propagation in nonlocal thermoelastic plates using the integral form of constitutive equations, balance of momenta and energy, field equations are obtained.

TL;DR: In this article, the complete Navier-Stokes equations describing the flow of incompressible Newtonian fluids relative to beds of particles have been solved numerically using the finite element technique in terms of the primitive variables, i.e. u − p − v.

TL;DR: In this paper, boundary layer approximations to the modified Navier-Stokes equations governing the flow of Casson fluid have been applied and the use of momentum integral technique reduces the governing equations to a system of non-linear ordinary differential equations which has been solved numerically by using Runge-Kutta Merson technique followed by an iterative procedure.

TL;DR: In this article, the authors investigate the dynamics of nonlinear waves that are supposed to represent domain walls in an atomic chain, where motion is allowed in the longitudinal direction as well as in the transverse one.

TL;DR: In this paper, a quasi-steady analysis of convective-conductive heat transfer in laminar flow of a Newtonian fluid between parallel-plates subjected to periodically varying inlet temperature is presented.

TL;DR: In this paper, an approximate quantum mechanical description of molecular energy transitions leads to fractional order time derivative descriptions of linear viscoelastic stress relaxation in polymers and the resulting fractional calculus stress-strain constitutive laws are mathematically compact and suitable for rheological and engineering analyses.

TL;DR: In this article, the authors considered the generation of stress, temperature and magnetic fields in a cylindrical solid continuum lying in an external magnetic field when it is subjected to a forced oscillation.

TL;DR: In this paper, the decay of magnetic field fluctuations in MHD turbulence at times before the final period is studied and two and three point correlation equations have been obtained and the set of equations is made determinate by neglecting the quadruple correlations in comparison with second and third order correlations.

TL;DR: In this paper, the authors studied the thermal resonance of temperature wave propagating in a solid with finite speed of heat propagation and placed the emphasis on the externally applied exciting frequency, in relation to the modal frequency of the thermal waves, at which the amplitude of thermal waves reaches a maximum.

TL;DR: In this paper, the rheological effects in the gravity flow of a non-Newtonian fluid sheet of power law behavior on an inclined plane are addressed and an exact self-similar solution of this problem is obtained, from which the dynamics of slow spreading is discussed.

TL;DR: In this article, the effect of slowly rotating systems with low frequency of oscillation when the conductivity of the fluid is low and the applied magnetic field is weak is studied. And the influence of different parameters viz. M 2 (Hartmann number), K 2 (rotation parameter) and θ (angle of inclination of magnetic field with the positive direction of axis of rotation) on the induced magnetic field component has been examined numerically.

TL;DR: In this article, the topological structure, global and local properties of disclinations in the gauge field theory of dislocation and disclination continuum are studied by means of the decomposition of gauge potentials.