Multiaxial fatigue analysis for IMIC of ITER upper ELM coil |
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| Affiliation: | 1. Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621900, Sichuan, PR China;2. China Erzhong Group Co., Ltd., Deyang 618000, Sichuan, PR China;3. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, Sichuan, PR China;1. National Fusion Research Institute, 169-148 Gwahangno, Yusung-gu, Daejeon 305-333, South Korea;2. Vitzrotech Co., Ltd, 605-2 Seonggok-dong, Danwon-gu, Ansan, Gyeonggi-do 425-833, South Korea;1. National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Frascati, Italy;2. Fusion for Energy (F4E) Broader Fusion Development Department, Garching, Germany;3. Japan Atomic Energy Agency, Naka Fusion Institute, Mukouyama, Naka-si, Ibaraki-ken, Japan;4. OCEM Energy Technology, San Giorgio Di Piano, Italy;1. Key Laboratory of Mechanics on Environment and Disaster in Western China, The Ministry of Education of China, Lanzhou, Gansu 730000, PR China;2. Department of Mechanics and Engineering Science, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000, PR China |
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| Abstract: | Inconel Jacketed Mineral Insulated Conductor (IMIC) is a very important component of International Thermonuclear Experimental Reactor (ITER) Edge Localized Modes (ELM) coils, which are located between the vacuum vessel (VV) and blanket shield modules and subject to high radiation levels, high temperature and high magnetic field. These coils will experience thermal pulsed, cyclic electromagnetic (EM) load during operation. They are designed to sustain at 1.5e8 total stress cycles and shall have sufficient strength and excellent fatigue to transport and bear the high cyclic load. For IMIC, multiaxial fatigue analysis is used to evaluate failure. Two methods based on the alternating stress and mean stress in American Society of Mechanical Engineers (ASME) code provide the design codes for multiaxial fatigue evaluation: constant principal stress direction and variation of principal stress direction. Results show that using the two methods obtains basically the same equivalent alternating stress. Both of them can be recommended for the ELM coils and IMIC can meet the fatigue criteria. |
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| Keywords: | IMIC Alternating stress Mean stress Multiaxial fatigue analysis |
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