Research and development of thick rubber bearing for SFR (Aging properties tests of semi full-scale thick rubber bearing)
A seismic isolation system composed of a thick rubber bearing and an oil damper has been developed for Sodium-Cooled Fast Reactor. One of the advantages of the isolation system is the use of thick rubber bearings to ensure the longer vertical natural period of a plant, thereby mitigating seismic loa...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2017-05-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/83/850/83_16-00444/_pdf/-char/en |
| _version_ | 1828099346525061120 |
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| author | Tomoyoshi WATAKABE Tomohiko YAMAMOTO Tsuyoshi FUKASAWA Shigeki OKAMURA Takahiro SOMAKI Ryota MOROBISHI Yu SAKURAI Kouji KATO |
| author_facet | Tomoyoshi WATAKABE Tomohiko YAMAMOTO Tsuyoshi FUKASAWA Shigeki OKAMURA Takahiro SOMAKI Ryota MOROBISHI Yu SAKURAI Kouji KATO |
| author_sort | Tomoyoshi WATAKABE |
| collection | DOAJ |
| description | A seismic isolation system composed of a thick rubber bearing and an oil damper has been developed for Sodium-Cooled Fast Reactor. One of the advantages of the isolation system is the use of thick rubber bearings to ensure the longer vertical natural period of a plant, thereby mitigating seismic loads to mechanical components. Characteristics of thick rubber bearings have been confirmed through a series of tests. This paper focused on the aging properties of thick rubber bearings, such as basic mechanical properties and ultimate strength. An aging test of thick rubber bearings was conducted using 1/2-scale (800 mm diameter) and 1/8-scale (200 mm diameter) rubber bearings. Aging of the rubber bearings was reproduced using thermal degradation based on Arrhenius law, in which the target of aging periods was 60 years, plant life time. The hysteresis loops of the thick rubber bearings after aging were obtained through horizontal and vertical static loading tests, and the effects of aging were evaluated by comparison with the initial mechanical properties. In addition, for the purpose of further research, the effect of scale by aging was clarified to compare the mechanical properties between the 1/2-scale and 1/8-scale rubber bearings. |
| first_indexed | 2024-04-11T08:14:36Z |
| format | Article |
| id | doaj.art-3058c567bf834a0c817443286c87c540 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:14:36Z |
| publishDate | 2017-05-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-3058c567bf834a0c817443286c87c5402022-12-22T04:35:11ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612017-05-018385016-0044416-0044410.1299/transjsme.16-00444transjsmeResearch and development of thick rubber bearing for SFR (Aging properties tests of semi full-scale thick rubber bearing)Tomoyoshi WATAKABE0Tomohiko YAMAMOTO1Tsuyoshi FUKASAWA2Shigeki OKAMURA3Takahiro SOMAKI4Ryota MOROBISHI5Yu SAKURAI6Kouji KATO7Japan Atomic Energy AgencyJapan Atomic Energy AgencyMitsubishi FBR Systems, Inc.Mitsubishi FBR Systems, Inc.Obayashi CorporationObayashi CorporationBridgestone CorporationBridgestone CorporationA seismic isolation system composed of a thick rubber bearing and an oil damper has been developed for Sodium-Cooled Fast Reactor. One of the advantages of the isolation system is the use of thick rubber bearings to ensure the longer vertical natural period of a plant, thereby mitigating seismic loads to mechanical components. Characteristics of thick rubber bearings have been confirmed through a series of tests. This paper focused on the aging properties of thick rubber bearings, such as basic mechanical properties and ultimate strength. An aging test of thick rubber bearings was conducted using 1/2-scale (800 mm diameter) and 1/8-scale (200 mm diameter) rubber bearings. Aging of the rubber bearings was reproduced using thermal degradation based on Arrhenius law, in which the target of aging periods was 60 years, plant life time. The hysteresis loops of the thick rubber bearings after aging were obtained through horizontal and vertical static loading tests, and the effects of aging were evaluated by comparison with the initial mechanical properties. In addition, for the purpose of further research, the effect of scale by aging was clarified to compare the mechanical properties between the 1/2-scale and 1/8-scale rubber bearings.https://www.jstage.jst.go.jp/article/transjsme/83/850/83_16-00444/_pdf/-char/ensodium-cooled fast reactorseismic isolationthick rubber bearingaging property and breaking test |
| spellingShingle | Tomoyoshi WATAKABE Tomohiko YAMAMOTO Tsuyoshi FUKASAWA Shigeki OKAMURA Takahiro SOMAKI Ryota MOROBISHI Yu SAKURAI Kouji KATO Research and development of thick rubber bearing for SFR (Aging properties tests of semi full-scale thick rubber bearing) Nihon Kikai Gakkai ronbunshu sodium-cooled fast reactor seismic isolation thick rubber bearing aging property and breaking test |
| title | Research and development of thick rubber bearing for SFR (Aging properties tests of semi full-scale thick rubber bearing) |
| title_full | Research and development of thick rubber bearing for SFR (Aging properties tests of semi full-scale thick rubber bearing) |
| title_fullStr | Research and development of thick rubber bearing for SFR (Aging properties tests of semi full-scale thick rubber bearing) |
| title_full_unstemmed | Research and development of thick rubber bearing for SFR (Aging properties tests of semi full-scale thick rubber bearing) |
| title_short | Research and development of thick rubber bearing for SFR (Aging properties tests of semi full-scale thick rubber bearing) |
| title_sort | research and development of thick rubber bearing for sfr aging properties tests of semi full scale thick rubber bearing |
| topic | sodium-cooled fast reactor seismic isolation thick rubber bearing aging property and breaking test |
| url | https://www.jstage.jst.go.jp/article/transjsme/83/850/83_16-00444/_pdf/-char/en |
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