ISSN:0149-5739    

DOI:10.1080/01495737908962409

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

This article outlines a basic view of coupled thermoelasticity through the application of the first two laws of thermodynamics to thermal-stress problems in general continuous solids subject to moderately large temperature variations.

ISSN:0149-5739    

DOI:10.1080/01495737908962410

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

The thermoelastic problem of an infinite plate which has a crack or a ribbonlike inclusion and is subjected to remotely uniform heat flow is analyzed under the assumption of linear heat transfer across the flaw. Numerical calculations show that the insulated crack causes an overestimation of the stress singularity, and the insulated inclusion produces an underestimation.

ISSN:0149-5739    

DOI:10.1080/01495737908962411

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

This paper is concerned with a method for calculating the thermal-stress distribution in a plate exhibiting temperature-dependent properties. Using the perturbation method, general equations for the displacements are found. The equations can be solved by using four displacement functions. Following this method, a solution is derived for calculating the stress intensity factor for a Griffith crack in a temperature-sensitive plate under a linear temperature distribution, where we assume that the temperature field is not disturbed by the crack. (Under these conditions, if a plate is temperature-insensitive, the stress intensity factor for the crack is zero.) In this case, whether the stress intensity factor is zero or not depends only on the temperature variation of the coefficient of thermal expansion. A numerical example is given for a plate made of steel.

ISSN:0149-5739    

DOI:10.1080/01495737908962412

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

Eigenfrequencies of originally flat thin plates are considered when in-plane thermal stresses are applied in the absence of lateral pressure. First pre-buckling and later postbuckling vibrations are envisaged. A method of superposition of partial solutions is used throughout.

ISSN:0149-5739    

DOI:10.1080/01495737908962413

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

The constitutive equations for an ideal plastic material are derived naturally from the Clausius-Duhem inequality and the yield function. An admissible thermodynamic process must satisfy the inequality. If there is no restriction on the stress and temperature rates in the elastic state, then we obtain the elastic constitutive equations. However, if they are related in the yield state by means of the yield criterion, then the constitutive equation may contain a term that corresponds to the plastic flow of the ideal plastic material. The isotropic case is considered, and we obtain Hook's law, the thermal isotropic expansion, and the Levy-St. Venant flow rule.

ISSN:0149-5739    

DOI:10.1080/01495737908962414

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

Explicit algebraic expressions are first proposed to predict easily and precisely the thermal-expansion coefficients of unidirectional reinforced plastics. They are given as functions of the thermal and elastic properties of the constituent materials and of the fiber-volume fraction. They are derived by considering circular anisotropic fibers arranged in a hexagonal array in a matrix. Then, analytical expressions are derived for the thermal-expansion coefficients and curing stresses in filament-wound laminated composites under the assumption of elastic behavior and within the framework of laminated plate theory.

ISSN:0149-5739    

DOI:10.1080/01495737908962415

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

This paper is concerned with an approximate method of solution for unsteady thermal-stress problems. An attempt to establish an improved finite-difference pattern is developed with the aid of numerical integration by using the Euler-Maclaurin summation formula. The proposed numerical method is reasonably well formulated, with a higher order of accuracy than the well-known finite-difference scheme.

ISSN:0149-5739    

DOI:10.1080/01495737908962416

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

The linear thermoelastic problem of an infinitely long circular cylinder with a circumferential edge crack is solved. The thermal stresses are caused by a uniform heat flow disturbed by the presence of the crack. The crack surfaces and the cylindrical surface are assumed to be insulated. Integral transform techniques are used to reduce the problem to that of solving two singular integral equations of the first kind. The equations are solved numerically, and the variation of the stress intensity factor with the crack depth is shown graphically.

ISSN:0149-5739    

DOI:10.1080/01495737908962417

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

The purpose of this paper is twofold. First, the pertinent formulas are derived for the components of the displacement vector and rotation vector and those of the force and moment stress tensors in the case of an arbitrary, integrable distribution of tractions and temperature on the layer bounding planes. Second, the distribution of the force stress component normal to the boundary, exerted by heating of a circular area of the bounding planes, is discussed. Numerical results, given in diagram form, take into account the variation of the material constants l2and a0, as well as the ratio of the heated-area diameter to the width of the layer.

ISSN:0149-5739    

DOI:10.1080/01495737908962418

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor