WEKO3
アイテム
{"_buckets": {"deposit": "90c2eb06-536d-4247-8227-3088c5c64b07"}, "_deposit": {"id": "2007177", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2007177"}, "status": "published"}, "_oai": {"id": "oai:u-ryukyu.repo.nii.ac.jp:02007177", "sets": ["1642837724153", "1642838406845"]}, "author_link": [], "item_1617186331708": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "球形構造物の波による振動に関する基礎的研究", "subitem_1551255648112": "ja"}, {"subitem_1551255647225": "Fundamental Study on the Vibration of a Submarine Structure Caused by Surface Waves.", "subitem_1551255648112": "en"}]}, "item_1617186419668": {"attribute_name": "Creator", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "河野, 二夫", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "Kono, Tsugio", "creatorNameLang": "en"}]}]}, "item_1617186476635": {"attribute_name": "Access Rights", "attribute_value_mlt": [{"subitem_1522299639480": "open access", "subitem_1600958577026": "http://purl.org/coar/access_right/c_abf2"}]}, "item_1617186626617": {"attribute_name": "Description", "attribute_value_mlt": [{"subitem_description": "The hydrodynamic effects of surface waves on a submarine structure are studied theoretically and experimentally. Main results of the study are summerized as follows: a) It can be assumed that a submerged sphere is affected by the forces composed of dynamic pressure calculated by the potential theory and hydraulic resistance which is proportional to the square of the relative velocity. The equation of motion of a sphere fixed by the spring on the sea bottom is developed on the basis of the above assumption and is solved analytically by the perturbation wethod. The characteristics of vibration of a sphere due to waves are measured in the wawe tank and the results of experiments coinside fairly well with the theoretical results, which means that the above assumption is reasonable. Therefore, it can be considered that the basic equation is applicable to the analysis of the full size submarine structures. b) The transverse vibration of a sphere to the woves_is recognized by the experiments. It is understood that this phenomenon is caused by the un-symmetric separation of flow around the sphere. The frequency of vibration is either the same or twice of the wave frequency. c) By investigating the theory of vibration of two spheres, it is found that the added mass changes by the direction of the wave to a line connecting centres of spheres. When the wave direction coincides with the center line of spheres, the added mass decreases and when the wave direction is perendicular to the center line, it increases in comparison with the single sphere. d) The motion of sphere is characterized by the theoretical investigation as follows; i) the added mass is increased, and ii) the effective pressure on the sphere is decreased, as the sphere approaches to the artinode of the standing wave. These results are confirmed by the experiments. e) It is obtained by the experiments that the amplitude of the vibrations is reduced by attaching wire-ring on the sphere. Based on the above investigation, the guide for the hydraulic design of the submarine structure is provided.", "subitem_description_type": "Other"}, {"subitem_description": "紀要論文", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "ja", "subitem_1522300316516": "琉球大学理工学部"}, {"subitem_1522300295150": "en", "subitem_1522300316516": "Science and Engineering Division, University of the Ryukyus"}]}, "item_1617186702042": {"attribute_name": "Language", "attribute_value_mlt": [{"subitem_1551255818386": "jpn"}]}, "item_1617186783814": {"attribute_name": "Identifier", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/20.500.12000/24957"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0387-429X"}, {"subitem_1522646500366": "NCID", "subitem_1522646572813": "AN00250785"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "ja", "subitem_1522650091861": "琉球大学理工学部紀要. 工学篇"}, {"subitem_1522650068558": "en", "subitem_1522650091861": "Bulletin of Science \u0026 Engineering Division, University of the Ryukyus. Engineering"}]}, "item_1617187056579": {"attribute_name": "Bibliographic Information", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1972-03", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "5", "bibliographicPageEnd": "212", "bibliographicPageStart": "129"}]}, "item_1617258105262": {"attribute_name": "Resource Type", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_1617265215918": {"attribute_name": "Version Type", "attribute_value_mlt": [{"subitem_1522305645492": "VoR", "subitem_1600292170262": "http://purl.org/coar/version/c_970fb48d4fbd8a85"}]}, "item_1617605131499": {"attribute_name": "File", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "download_preview_message": "", "file_order": 0, "filename": "NO5P129-3.pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "", "size": 0, "url": {"objectType": "fulltext", "url": "https://u-ryukyu.repo.nii.ac.jp/record/2007177/files/NO5P129-3.pdf"}, "version_id": "a407989f-5cc0-4f5d-8c6e-3ff881706437"}, {"accessrole": "open_access", "download_preview_message": "", "file_order": 1, "filename": "NO5P129-2.pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "", "size": 0, "url": {"objectType": "fulltext", "url": "https://u-ryukyu.repo.nii.ac.jp/record/2007177/files/NO5P129-2.pdf"}, "version_id": "36671a92-4ec0-40c6-9e45-aaebb8c44e60"}, {"accessrole": "open_access", "download_preview_message": "", "file_order": 2, "filename": "NO5P129-1.pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "", "size": 0, "url": {"objectType": "fulltext", "url": "https://u-ryukyu.repo.nii.ac.jp/record/2007177/files/NO5P129-1.pdf"}, "version_id": "bc1ff766-136e-40ba-ac16-22a2243d97a3"}]}, "item_title": "球形構造物の波による振動に関する基礎的研究", "item_type_id": "15", "owner": "1", "path": ["1642837724153", "1642838406845"], "permalink_uri": "http://hdl.handle.net/20.500.12000/24957", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2012-07-13"}, "publish_date": "2012-07-13", "publish_status": "0", "recid": "2007177", "relation": {}, "relation_version_is_last": true, "title": ["球形構造物の波による振動に関する基礎的研究"], "weko_shared_id": -1}
球形構造物の波による振動に関する基礎的研究
http://hdl.handle.net/20.500.12000/24957
http://hdl.handle.net/20.500.12000/24957ff79cd95-3dab-4837-9612-c8a510a40c10
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
NO5P129-3.pdf
|
|
|
|
NO5P129-2.pdf
|
|
|
|
NO5P129-1.pdf
|
|
| Item type | デフォルトアイテムタイプ（フル）(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2012-07-13 | |||||||||
| タイトル | ||||||||||
| タイトル | 球形構造物の波による振動に関する基礎的研究 | |||||||||
| 言語 | ja | |||||||||
| タイトル | ||||||||||
| タイトル | Fundamental Study on the Vibration of a Submarine Structure Caused by Surface Waves. | |||||||||
| 言語 | en | |||||||||
| 作成者 |
河野, 二夫
× 河野, 二夫
× Kono, Tsugio
|
|||||||||
| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | The hydrodynamic effects of surface waves on a submarine structure are studied theoretically and experimentally. Main results of the study are summerized as follows: a) It can be assumed that a submerged sphere is affected by the forces composed of dynamic pressure calculated by the potential theory and hydraulic resistance which is proportional to the square of the relative velocity. The equation of motion of a sphere fixed by the spring on the sea bottom is developed on the basis of the above assumption and is solved analytically by the perturbation wethod. The characteristics of vibration of a sphere due to waves are measured in the wawe tank and the results of experiments coinside fairly well with the theoretical results, which means that the above assumption is reasonable. Therefore, it can be considered that the basic equation is applicable to the analysis of the full size submarine structures. b) The transverse vibration of a sphere to the woves_is recognized by the experiments. It is understood that this phenomenon is caused by the un-symmetric separation of flow around the sphere. The frequency of vibration is either the same or twice of the wave frequency. c) By investigating the theory of vibration of two spheres, it is found that the added mass changes by the direction of the wave to a line connecting centres of spheres. When the wave direction coincides with the center line of spheres, the added mass decreases and when the wave direction is perendicular to the center line, it increases in comparison with the single sphere. d) The motion of sphere is characterized by the theoretical investigation as follows; i) the added mass is increased, and ii) the effective pressure on the sphere is decreased, as the sphere approaches to the artinode of the standing wave. These results are confirmed by the experiments. e) It is obtained by the experiments that the amplitude of the vibrations is reduced by attaching wire-ring on the sphere. Based on the above investigation, the guide for the hydraulic design of the submarine structure is provided. | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 紀要論文 | |||||||||
| 出版者 | ||||||||||
| 言語 | ja | |||||||||
| 出版者 | 琉球大学理工学部 | |||||||||
| 出版者 | ||||||||||
| 言語 | en | |||||||||
| 出版者 | Science and Engineering Division, University of the Ryukyus | |||||||||
| 言語 | ||||||||||
| 言語 | jpn | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 識別子 | ||||||||||
| 識別子 | http://hdl.handle.net/20.500.12000/24957 | |||||||||
| 識別子タイプ | HDL | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0387-429X | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AN00250785 | |||||||||
| 収録物名 | ||||||||||
| 言語 | ja | |||||||||
| 収録物名 | 琉球大学理工学部紀要. 工学篇 | |||||||||
| 収録物名 | ||||||||||
| 言語 | en | |||||||||
| 収録物名 | Bulletin of Science & Engineering Division, University of the Ryukyus. Engineering | |||||||||
| 書誌情報 |
号 5, p. 129-212, 発行日 1972-03 |
|||||||||
