Inelastic analysis of new thermal ratchetting due to a moving temperature front |
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| Institution: | 1. Nagasaki R&D Center, Mitsubishi Heavy Ind., Ltd., Nagasaki, Japan;2. Department of Mechanical Engineering, Nagoya University, Japan;3. Department of Mechanical Engineering, Hiroshima University, Japan;4. Department of Energy Conversion Science, Kyoto University, Japan;1. Technische Universität Darmstadt, Fachgebiet und Institut für Werkstoffkunde, Grafenstrasse 2, 64283 Darmstadt, Germany;2. Ansaldo Sviluppo Energia, Via Lorenzi 8, Genoa, Italy;1. Procédés, Matériaux et Energie Solaire (PROMES), UPR 8521. 7 rue du Four Solaire, 66 120 Font-Romeu Odeillo Via, France / Tecnosud – Rambla de la Thermodynamique, 66 100 Perpignan, France;2. Science des Procédés Céramiques et de Traitements de Surface (SPCTS), UMR 7315. 12 rue Atlantis, 87 068 Limoges Cedex, France;3. MISTRAS Group SA, 27 rue Magellan, Paris CEDEX 94370, France;1. Faculty of Metallurgical and Materials Engineering, Semnan University, Semnan, Iran;2. School of Metallurgy and Materials Engineering, Iran University of Science & Technology, Tehran, Iran;1. The Highway Institute Belgrade, Kumodra?ka 257, 11000 Belgrade, Serbia;2. University of Belgrade – Faculty of Mining and Geology, ?u?ina 7, 11000 Belgrade, Serbia;1. Division of Solid Mechanics, Department of Management and Engineering, Linköping University, SE-58183 Linköping, Sweden;2. Siemens Industrial Turbomachinery AB, SE-61283 Finspång, Sweden |
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| Abstract: | Results of the joint project by the Working Group of Inelastic Analysis, Committee on High Temperature Strength, Society of Materials Science, Japan, are summarized. The purpose of this project, consisting of two parts, is to find out an appropriate inelastic constitutive equation which can simulate the new thermal ratchetting of a cylinder subjected to a traveling axial temperature distribution. In the first part of this project, uniaxial strain and stress-controlled ratchetting behavior is simulated by plural constitutive equations in order to examine the ability to reproduce basic deformation behavior of 316FR stainless steel at room temperature and 650 °C. In the second part, inelastic analyses of the thermal ratchetting of a cylinder due to a traveling temperature distribution are performed. Experimental data of ten specimens made of SUS 316 and 316FR stainless steels are prepared for evaluating the following items: traveling distance, stress level and hold time at high temperature. A comparison between experiments and corresponding inelastic analyses using eight types of constitutive models is made, and the selection of the appropriate constitutive equation is discussed. |
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