대한기계학회논문집 (Transactions of the Korean Society of Mechanical Engineers)
- 제15권2호
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- Pages.396-403
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- 1991
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- 1225-5963(pISSN)
DOI QR Code
비축대칭 열하중을 받는 원통튜브의 점탄성 응력해석
Viscoelastic stress analysis of nonaxisymmetrically heated cylindrical tubes
초록
A solution is presented for the computation of the elastic-creep stresses in a hollow cylinder subjected to nonaxisymmetric temperature distribution. The creep problem is treated by the Maxwell creep model. Laplace transformation is used for reformation of the governing equation of elastic problem and Hooke's law in a function of .gamma. , .theta. , and creep constant. The governing equation is set up using the Airy stress function which leads to the biharmonic equation. The solution is obtained by using Fourer series method and Laplace inverse method used to obtain the stress components which include the variation of time. This solution shows excellent agreement with Lamkin's and Boley & Weiner's solution. The viscoelastic stresses are also obtained for the fuel rob tube subjecting nonaxisymmetric thermal load.
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