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Showing papers in "International Journal of Engineering Science in 1988"


Journal ArticleDOI
TL;DR: In this paper, an exact evolution equation for the surface density function is derived and discussed, which reveals the effects of various processes such as straining, and surface propagation, for example.

484 citations


Journal ArticleDOI
TL;DR: In this paper, the authors considered the quasistatic problem of a linear elastic body in unilateral contact with a rigid support subject to Coulomb's friction law and a power law normal compliance.

218 citations


Journal ArticleDOI
TL;DR: In this paper, a thermodynamic phenomenological formulation of a theory capable of displaying electromechanical hysteresis effects in continous media, which should apply to ferroelectric ceramics, is presented.

167 citations


Journal ArticleDOI
TL;DR: In this paper, the authors considered the linear elasticity problem for an interface crack between two bonded half planes and showed that the singular behavior of stresses in the nonhomogeneous medium is identical to that in a homogeneous material provided the spacial distribution of material properties is continuous near and at the crack tip.

121 citations


Journal ArticleDOI
TL;DR: In this article, a negative Poisson's ratio is predicted for planar and three-dimensional random isotropic systems when the tangential stiffness is greater than the normal stiffness (i.e. λ > 1 ).

102 citations


Journal ArticleDOI
TL;DR: In this paper, a consistent set of thermodynamic relations for the description of the poling of ceramics was derived. But the model developed in Part I [1] was used only to deduce the thermodynamic properties of the poramics and it was not considered as a thermodynamic basis for Chen's theory.

95 citations


Journal ArticleDOI
TL;DR: In this paper, a matrix method is presented for the solution of elastic wave propagation problems in multilayered isotropic solids containing imperfectly welded interfaces, where interfacial traction is assumed to be proportional to the displacement jump across the interface.

85 citations


Journal ArticleDOI
TL;DR: In this paper, balance equations and boundary conditions of elastic dielectrics are derived through a variational principle in which, to include the spatial and frequency dispersion effects, the first and second gradients of the deformation gradient and the polarization gradient are chosen as independent variables in addition to deformation gradients and polarization.

75 citations


Journal ArticleDOI
TL;DR: In this paper, a nonlinear analysis for the propagation of surface waves on a homogeneous, elastic half-space of general anisotropy is given, and the evolution equation for the Fourier transform of the surface elevation as a criterion ensuring that corrections to the displacements within linear theory are everywhere sufficiently small.

72 citations


Journal ArticleDOI
TL;DR: In this paper, boundary layer solutions are presented to study the combined forced and free convection from a vertical semi-infinite plate to a micropolar fluid, where the boundary conditions of isothermal wall and constant surface heat flux are considered.

63 citations


Journal ArticleDOI
TL;DR: In this paper, a nonlinear Kappa-epsilicon model was proposed to predict the reattachment points of turbulent flow past a backward facing step in the TEACH program.

Journal ArticleDOI
TL;DR: In this paper, the authors considered the problem of an infinitely long annular cylinder whose inner and outer surfaces are subjected to known surrounding temperatures and are traction free, in the context of generalised theroelasticity theory with one relaxation time.

Journal ArticleDOI
TL;DR: In this paper, the finite element method has been used for a consistent analysis of coupled thermo-mechanical large deformation of metals, and a time dependent elastic-viscoplastic model was used to represent the flow type behavior of metals at elevated temperatures.

Journal ArticleDOI
TL;DR: In this article, an exact solution to the boundary value problem of shear-flexible doubly curved anti-symmetric angle-ply shells of rectangular planform and subjected to transverse loading is presented.

Journal ArticleDOI
TL;DR: In this article, the laminar boundary layer flow of a micropolar fluid past a flat plate subject to uniform suction has been examined and the heat transfer study has been made in the presence of both constant as well as temperature dependent heat sources.

Journal ArticleDOI
TL;DR: In this article, the distribution of deformation, temperature, and magnetic field in a homogeneous isotropic, thermally and electrically conducting, elastic half-space, in contact with the vacuum, has been investigated by taking (i) a step in stress and (ii) a thermal shock, at the plane boundary, in context of generalised theory of thermoelasticity.

Journal ArticleDOI
TL;DR: In this paper, the derivative expansion method is used to examine the nonlinear modulation of Love waves in a half space covered by a layer of uniform thickness having different mechanical properties, where both half space and layer are assumed to be homogeneous, isotropic and compressible hyperelastic materials.

Journal ArticleDOI
TL;DR: In this paper, a model for the study of convective motions of temperature and salt fields in a porous medium, where the temperatures remain below 4°C, is proposed, with the key factor being an application of the parabolic maximum principle.

Journal ArticleDOI
TL;DR: In this paper, the stress intensity factors for a circular annulus crack are calculated using formulas obtained by Love and Clements [J. Aust. Math. Soc.19 (Series B, 259, 1976] and compared with the corresponding factors given recently by other authors.

Journal ArticleDOI
TL;DR: In this paper, a vectorial derivation of the most general Appellian equations of motion for systems under nonlinear (first-order) nonholonomic constraints was carried out, with the help of the principle of freeing/relaxation of constraints.

Journal ArticleDOI
TL;DR: In this paper, a free convection micropolar fluid flow between two vertical porous parallel plates is studied in the presence of temperature dependent heat sources including the effect of frictional heating.


Journal ArticleDOI
TL;DR: In this paper, the authors considered the special case of the change of a reference configuration by uniaxial extension, and discussed the structure of the new material symmetry group, and showed that it includes non-orthogonal unimodular transformations.

Journal ArticleDOI
Y.C. Angel1
TL;DR: In this paper, it is shown how problems of scattering of waves by cracks can be reduced to systems of singular integral equations of the Cauchy type by using integral transform techniques.

Journal ArticleDOI
TL;DR: In this paper, the authors used the smooth perturbation of the variational inequality to obtain the finite element error estimate, which is of order h 1 2 in the energy norm.

Journal ArticleDOI
TL;DR: In this paper, a theory for modeling fluidized beds based on ideas in mixture theory is proposed for purely mechanical (isothermal) systems in which no chemical reaction or interconversion of mass takes place between the constituents.

Journal ArticleDOI
TL;DR: In this paper, the performance of several numerical schemes for solving these evolution equations and presents methods which provide both accurate and stable simulations of large classes of rate-dependent problems, including damage theory and viscoelasticity.

Journal ArticleDOI
TL;DR: In this paper, the evolution equations of diffusion, momentum, energy, electromagnetic field and nonequilibrium fluxes of mass, electric current and heat are formulated for a conducting thermoelastic paramagnetic body in the framework of extended irreversible thermodynamics.

Journal ArticleDOI
TL;DR: In this article, the effects of material parameters, wall mass transfer, the Prandtl number and the distinct thermal boundary conditions on the local skin friction coefficient and heat transfer coefficient were analyzed.

Journal ArticleDOI
TL;DR: In this article, a shape sensitivity analysis is performed for a dynamically loaded nonlocal thermoelastic solid body, considering a general integral functional of system's response in a finite interval of time, the total variation of the functional with respect to shape variations is obtained through the adjoint variable method and the material derivative concept of structural optimization.