10. Method of Thermal Elastic-Plastic Analysis : Part 2 Thermal Stress Analysis based on Inherent Strain

概要

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The authors reported the formulation of the finite element technique based on displacement method which could be applied to two or three dimensional thermal elastic-plastic stress problems. Recently, more complicated and realistic problems could be solved by using powerful numerical methods such as finite element technique, etc., because of the remarkable progress in computer application. On the contrary in this paper, the authors present a new calculation method which combines the idea of dividing the whole region into finite elements such as F.E.M. with the modified initial strain method and stress function introduced by Fujimoto. Since this method is a sort of stress method, it is easily understood that stresses calculated by this new method could be very close to the experimental data. It is confirmed that thermal elastic-plastic stress analysis based on inherent strain method is rather effective compared with the finite element method of displacement type, when more accurate stress distribution is required, and also that calculation time would be much less when many incremental repetitions are needed.
社団法人日本船舶海洋工学会の論文