Non-Linear Thermal Stress Analysis for Nuclear Power Plant by Finite Element Method

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Report Number: AFFDL TR 71-160 p. 773-790
Author(s): Mizumachi, Wataru
Corporate Author(s): Toshiba Electric Co., Atomic Power Division, Tokyo, Japan
Date of Publication: 1973-12
Pages: 17
DoD Task:
Identifier: This paper is part of a conference proceedings. See AD0785968

This paper presents the non-linear thermal stress analysis for the nuclear power plant by the finite element method. The heat equilibrium equation becomes the non-linear differential equation when the thermal conductivity is dependent on the temperature of the body. And the heat flow due to the radiation is in proportion to the fourth power of the absolute temperature by Stafen-Boltzmann law. The finite element method has proven very successful in analyzing these non-linear problems. Besides, there are two types of non-linearity as far as the stress analysis is concerned. One is the material non-linearity problem and the other is the geometrical non-linearity problem. The material non-linearity problem, namely the elastic-plastic analysis, is expected in the case of designing the nuclear power plant. The non-linear heat problems and the material non-linearity problem can be analyzed by the same nodal points and the same elements with application of the finite element method.

Provenance: Bombardier/Aero

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