摘要:

Approximate closed-form solutions are obtained for the thermal stress and deformation of an orthotropic layered shell of revolution with properties that vary along the meridian and through the wall thickness. The shell is subjected to axisymmetrical temperature as well as surface load distributions. Particular solutions of the governing differential equations give significant bending stresses that can occur far from the supporting edge of the shell, due to the nonhomogeneity of the shell wall. The asymptotic results presented in this paper for the orthotropic shell of general meridian reduce exactly to the classical thermal solutions obtained by Timoshenko for the isotropic cylindrical shell.

ISSN:0149-5739    

DOI:10.1080/01495738808961941

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

In this paper we study the influence of temperature and velocity gradient nonuniformities on the stabilization of the adiabatic symmetric flow caused by a constant pressure gradient of a thermoviscous liquid with temperature-dependent viscosity. We show that the choice of the viscosity function permits the stabilizing effect of internal dissipation to prevail and deliver a stable large time response, without “shear band” formation.

ISSN:0149-5739    

DOI:10.1080/01495738808961942

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

In a boundary integral formulation to a thermoelastic problem, the temperature change is treated as an equivalent body force. Therefore, even in the case of no body force acting, the formulation involves volume integrals. In the present paper it is proved that introduction of the thermoelastic potential succeeds in eliminating the volume integrals in the three-dimensional formulation. The formulations are transformed from Cartesian coordinates into axisymmetric coordinates. All the surface integrals are replaced by line integrals along the boundary of the axisymmetric domain. By using the above formulation, the deformation and stress distributions of a bonded cylinder subjected to a uniform temperature change are analyzed numerically.

ISSN:0149-5739    

DOI:10.1080/01495738808961943

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

The state space approach developed in [1–4] for the solution of coupled thermo-elastic problems is adopted for the solution of one-dimensional problems in generalized thermoelasticity with one relaxation time. The technique is applied to a thermal shock half-space problem and to a problem pertaining to a layered medium. Some numerical results are given.

ISSN:0149-5739    

DOI:10.1080/01495738808961944

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

A method of solving uncoupled quasi-static thermoelastic problems in perforated plates is presented. As an illustrative example, a transient thermal stress problem is solved for an infinite plate containing two elliptic holes with prescribed temperatures. The following hole temperatures are considered in detail: (1) Both holes are at the same constant temperature T0; ()2) one hole is at T0, the other at −T0. Numerical results are given for minor diameter/major diameter ratios of 1 (circular hole), ½, and ⅓, and for major diameter/pitch ratios of 0 (one hole)−0.9. The results show the power and flexibility of the method.

ISSN:0149-5739    

DOI:10.1080/01495738808961945

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

Analyses of thermal stress, heat flux, and temperature distributions are carried out for an infinite plate with a cracked circular hole under uniform heat flux in any direction. The stress intensity factor and the singularity of the heat flux at the crack tip are also obtained. The rational mapping function and the dislocation method are used for the analyses. The closed solutions are obtained for the temperature and thermal stress analyses.

ISSN:0149-5739    

DOI:10.1080/01495738808961946

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

The problem solved in this paper is that of finding the stresses in a linear thermoelastic solid when a uniform heat flow is disturbed by the presence of an insulated circular hole with a radial edge crack. By using a Mellin transform technique the authors reduce the problem to a pair of singular integral equations, which are then solved numerically.

ISSN:0149-5739    

DOI:10.1080/01495738808961947

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

A regularly nonhomogeneous (composite), anisotropic, thin curved layer with rapidly oscillating material parameters and thickness is considered for the case when mean thickness and period scale have small magnitudes of the same order. A three-dimensional thermoelasticity problem for this layer is reduced to a homogenized shell model by means of an asymptotic homogenization method for periodic structures. The effective thermoelastic and thermal material parameters of this shell are expressed in terms of solutions for auxiliary local problems in the cell of periodicity. Using the solution of the boundary-value problem for the homogenized shell and the solutions of the local problems, one can obtain a three-dimensional microstructure of the stresses, displacements and temperature with a high accuracy

ISSN:0149-5739    

DOI:10.1080/01495738808961948

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

The equations of infinitesimal deformations and weak fields superimposed on a finite ihermoelastic deformation and strong electromagnetic field are established. The theory shows that for initially nonuniformly heated rigid dielectrics, the thermal field is influenced by the polarization vector field even in the case of equilibrium. A variational characterization of the problem is given.

ISSN:0149-5739    

DOI:10.1080/01495738808961949

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor