摘要:

This paper concerns a theoretical treatment of three-dimensional coupled thermal stress problems in a cylindrical body having transversely isotropic material properties. The first section of the paper is devoted to resolution of the coupled forms of the temperature field and the associated thermoelastic field into the uncoupled forms by using the modified potential-function method and introducing a perturbation technique. Then, in the next section, we analyze a three-dimensional coupled thermal stress problem of an infinitely long hollow cylinder having transversely isotropic properties. In our analysis we carry out the numerical calculations for several values of the orthotropic parameters of material constants. These effects on the temperature and the associated stress distributions are then examined briefly.

ISSN:0149-5739    

DOI:10.1080/01495738908961951

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

This paper concerns a transient thermal stress analysis of a laminated beam made of different materials in multilayers. To simplify the problem, we treat the heat conduction problem as a one-dimensional case in the direction of thickness; then we evaluate the transient temperature solution using the Laplace transform method. For the thermoelastic fields, we obtain the thermal stress distributions by using the elementary beam theory and Airy's thermal stress function method. As an example, we carry out numerical calculations for a laminated beam made of five layers and then examine the numerical results.

ISSN:0149-5739    

DOI:10.1080/01495738908961952

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The thermal buckling behavior of laminated plates subjected to a nonuniform temperature field is investigated by the finite-element method. Being nonuniformly distributed over the plate, the thermal stresses should be determined before solving the buckling problem. The stiffness matrix, geometry matrix, and load vector are derived based on the principle of minimum potential energy. The assumed displacement state over the middle surface of the plate element is expressed as the products of one-dimensional, first-order Hermite polynomials. Numerical results show that the thermal buckling strength of a clamped plate is higher than that of a simply supported plate, and the influence of lamination angle, plate aspect ratio, and modulus ratio on thermal buckling are found to be significant for laminated plates.

ISSN:0149-5739    

DOI:10.1080/01495738908961953

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

A numerical method for analysis of unsteady thermal stress in a compound region is proposed. It is shown that two-dimensional unsteady thermal stress problems in compound regions can be easily solved without region integral by means of ther-moelastic displacement potential and boundary-element method.

ISSN:0149-5739    

DOI:10.1080/01495738908961954

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor