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Showing papers in "International Journal of Engineering Science in 1999"


Journal ArticleDOI
TL;DR: In this article, a generic Gibbs free energy for polycrystalline Shape Memory Alloys (SMAs) is obtained by forming the increments of both elastic potential energy and Gibbs chemical energy over a Representative Volume Element (RVE) with respect to an infinitesimal increment of martensite.

228 citations


Journal ArticleDOI
TL;DR: In this article, the evolution of plastic strains and Two-Way Shape Memory effect (TWSM) of polycrystalline NiTi Shape Memory Alloys with respect to cyclic thermally induced transformation cycles are investigated.

218 citations


Journal ArticleDOI
TL;DR: In this article, Bo and Lagoudas used the first law of thermodynamics to characterize the thermomechanical response of polycrystalline shape memory alloys (SMAs) during a stable phase transformation cycle.

178 citations


Journal ArticleDOI
TL;DR: In this article, a theoretical model is developed to simulate transport phenomena in a proton exchange membrane fuel cell (PEMFC), and numerical simulations are presented for various one-and two-dimensional isothermal cases.

178 citations


Journal ArticleDOI
TL;DR: A thermomechanical model for the hysteretic response of Shape Memory Alloys (SMAs) is proposed in this article by expanding a previous model developed by Bo and Lagoudas to include minor hysteresis loops.

170 citations


Journal ArticleDOI
TL;DR: In this paper, the effect of impulsive motion of the surface is found to be more pronounced on the skin friction but its effect on the x-component of the induced magnetic field and heat transfer is small.

129 citations


Journal ArticleDOI
TL;DR: In this paper, the kinematics of damage for finite strain, elasto-plastic deformation is introduced using the fourth-order damage effect tensor through the concept of the effective stress within the framework of continuum damage mechanics.

85 citations



Journal ArticleDOI
TL;DR: In this paper, the authors examined the propagation of time harmonic circumferential waves in a two-dimensional hollow cylinder with an inner shaft, where the boundary condition at the interface (between the inner shaft and the outer cylinder) is assumed to be zero, and the normal stress and radial displacements are continuous.

80 citations


Journal ArticleDOI
TL;DR: A robust variable structure control law for the biped robot is proposed and the performance of the system is evaluated when a computed torque control scheme is used.

77 citations


Journal ArticleDOI
TL;DR: Explicit mathematical models have been developed to predict the release rate of fertilizers from polymeric membrane as mentioned in this paper, and these models can be used to describe the release ratio under different operating conditions.

Journal ArticleDOI
TL;DR: In this paper, the analytical study of the two-dimensional flow of a power-law fluid with a peripheral layer was carried out by using wavelength approximations, and the solution has been obtained in the form of a stream function from which the shape of the interface has been determined.

Journal ArticleDOI
TL;DR: In this article, a group of submerged horizontal plates is investigated analytically based on the linear potential wave theory, where the velocity potential in each fluid domain is formulated and unknown coefficients are determined from the matching conditions using three sets of orthogonal eigenfunctions.

Journal ArticleDOI
TL;DR: In this paper, an analysis is made to determine the heat and mass transfer occurring in the laminar boundary layer on a linearly accelerating surface with temperature dependent heat source subject to suction or blowing.

Journal ArticleDOI
TL;DR: In this paper, an elastic-plastic impact between rough cylinders that deform in plane strain is examined using a lumped parameter representation for the compliance of the contact region, where the tangential components of compliance and force have no influence on the normal components for the normal relative impact velocity less than that required to generate uncontained plastic deformation.

Journal ArticleDOI
TL;DR: In this article, the unsteady viscous flow in the vicinity of an axisymmetric stagnation point of an infinite circular cylinder is investigated when both the free stream velocity and the velocity of the cylinder vary arbitrarily with time.

Journal ArticleDOI
TL;DR: In this paper, a new form of governing equation is derived from Hamilton's principle of least action for a constrained Lagrangian, depending on conserved quantities and their derivatives with respect to the time-space.

Journal ArticleDOI
TL;DR: In this paper, a transversely isotropic piezoelectric medium with collinear cracks is studied, based on the exact electric boundary conditions on the crack faces, and the complex potential method is used to reduce the problem to a Remmain-Hilbert problem.

Journal ArticleDOI
TL;DR: In this paper, the authors use a perturbation technique in which the perturbance parameter is a geometric measure of the departure from the geometry in which rectilinear flow is possible.

Journal ArticleDOI
TL;DR: In this article, the vibrational behavior of pre-twisted composite space rods under isothermal conditions is theoretically investigated based on the Timoshenko beam theory, and the Poisson effect is incorporated in the formulation of the beam resultant constitutive equations.

Journal ArticleDOI
Jin Bo1
TL;DR: In this paper, the vertical vibration of an elastic circular plate on fluid-saturated porous half space is studied by a new analytical method, where the contact between the elastic circle and the poroelastic half space was assumed to be smooth.

Journal ArticleDOI
TL;DR: In this paper, the displacement and electrostatic potential fields in the static and free vibration response of layered piezoelectric spheres were analyzed using analytic and discrete-layer models.

Journal ArticleDOI
TL;DR: In this article, a modified nonlinear Galerkin method was proposed to solve the nonstationary two-dimensional viscoelastic fluid motion equations with periodic boundary condition, which can save a large amount of computational work and maintain the convergence rate of the latter.

Journal ArticleDOI
TL;DR: In this article, an exact three-dimensional method of solution for the distribution of mechanical and electric quantities in interior points of a symmetrically inhomogeneous and laminated piezoelectric plate was presented.

Journal ArticleDOI
TL;DR: In this paper, a bi-dimensional laminar boundary-layer flow of a conducting newtonian fluid in a semi-porous channel with a possible moving boundary is examined in the presence of a transverse magnetic field.

Journal ArticleDOI
TL;DR: In this article, the bifurcation problem for three-dimensional isotropic, incompressible elastic plates subjected to a combined flexure and axial compression was considered, with the compressive loading being along the axis of the right circular cylinder formed by the flexure.

Journal ArticleDOI
TL;DR: In this article, a stress investigation for a circular piezoelectric fiber sensor embedded in a non-piezolectric elastic material has been carried out, where the inhomogeneity problem is partially decoupled into an elastic problem and a dielectric inhomogeneous problem connected via some eigenstrain and eigen-electric field.

Journal ArticleDOI
TL;DR: An exact solution for the magnetohydrodynamics (MHD) flow of a conducting, incompressible Oldroyd-B fluid between two infinite, parallel, insulated disks rotating about non-coincident axes normal to the disks in the presence of a uniform transverse magnetic field was obtained in this article.

Journal ArticleDOI
TL;DR: In this paper, the influence of modal interactive elastic buckling on the postbuckling behavior of thin-walled composite beam-columns with imperfections is studied when the distortional deformations are taken into account.

Journal ArticleDOI
TL;DR: Cocu and Raous as mentioned in this paper proved that the uniqueness of the quasi-static signorini problem with non-local Coulomb friction does not hold for an arbitrarily small friction coefficient.