摘要:

An analysis is presented of the effect of a finite boundary conductance on the magnitude of the thermal stresses in a solid circular cylinder, subjected to conductive heat transfer from an infinite mechanically noninteracting surrounding medium.

ISSN:0149-5739    

DOI:10.1080/01495738508942235

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

The transient thermal stresses on the 5-element strain gage are measured both for the disk and the circular plate with holes, and under a partial heating by molten metal on one face. The results are in good agreement with the theoretical solutions. The effects of the disk thickness and the interference with holes on the thermal stresses have been investigated.

ISSN:0149-5739    

DOI:10.1080/01495738508942236

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

Unlike any other numerical methods, the axisymmetric form of the Boundary Integral Equation (BIE) method is not a straightforward modification of the two- or three-dimensional formulations. In this paper, axisymmetric thermoelastic effects are treated as effective body forces over the volume and transformed to the boundary to preserve the important advantage of the BIE method of reducing the dimensionality by one. Two alternative approaches are presented; one is based on integrating the already established three-dimensional solutions, and the other assumes from the outset an axisymmetric ring of load rather than the three-dimensional point load. Both approaches are shown to arrive at identical solutions. A numerical example is included to illustrate the numerical implementation and accuracy of the thermoeleastic axisymmetric BIE formulation.

ISSN:0149-5739    

DOI:10.1080/01495738508942237

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

The three-dimensional distribution of temperature, thermal deformation, and thermal stress in a workpiece during table traverse cross-feed surface grinding is computed numerically, and the effects on the dimensional accuracy, the holding force of the magnetic chuck, and the grinding cracks in the workpiece are discussed. The temperature distribution is calculated by a finite-difference method, and the distribution of thermal deformation and thermal stress is determined by a numerical method developed from the relaxation method. From the results of the analysis, it is clear that the deformation of workpieces cannot be disregarded when considering dimensional accuracy, and that the magnetic chuck is not sufficient to counteract the thermal bending of the workpiece.

ISSN:0149-5739    

DOI:10.1080/01495738508942238

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

The stationary thermoelastic problem for an orthotopic semi-infinite slab undergoing plane deformation is investigated. The top and bottom faces of the slab are presumed to be free of traction and subject to arbitrary symmetrical distributions of temperature, while the end of the slab is taken to be rigidly fixed and thermally insulated. By using Fourier transforms the heat conduction problem is solved and the corresponding stress problem is reduced to a singular-integral equation. Numerical results are presented for both the temperature and stresses along the fixed end of the slab caused by different prescribed surface temperature distributions.

ISSN:0149-5739    

DOI:10.1080/01495738508942239

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

摘要:

Necessary optimaliry conditions for a static optimization problem in thermoelasticity are derived by calculus of variations. Optimal boundary heat fluxes and surface tractions are then found by means of a numerical method of solution that utilizes the finite-element and conjugate-gradient methods. It is found that the coefficient of linear thermal expansion of the solid body serves as the coupling parameter, affecting the optimal temperature as well as the displacement fields, a property which is not seen in a classical analysis of steady-state thermoelasticity.

ISSN:0149-5739    

DOI:10.1080/01495738508942240

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor

ISSN:0149-5739    

DOI:10.1080/01495738508942241

出版商:Taylor & Francis Group    

年代:1985

数据来源: Taylor