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A Note on Dynamics of a Swing
https://doi.org/10.34429/00002099
https://doi.org/10.34429/0000209964e7ce0f-b411-4a94-8ebe-1471413b9232
| 名前 / ファイル | ライセンス | アクション |
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KJ00000157763.pdf (454.9 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
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| 公開日 | 2009-03-13 | |||||||
| タイトル | ||||||||
| タイトル | A Note on Dynamics of a Swing | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | departmental bulletin paper | |||||||
| ID登録 | ||||||||
| ID登録 | 10.34429/00002099 | |||||||
| ID登録タイプ | JaLC | |||||||
| 著者名 |
Maezawa, Seiichiro
× Maezawa, Seiichiro
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| 内容 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | Sometimes the motion of a swing is explained as an example of parametric excitation phenomena where the spring stiffness in a vibrating system undergoes a periodic change with the frequency twice as much as the natural frequency of the system. This explanation is wrong, or at least insufficient in two points. The one point is that the parametric excitation in the case of swing motion is due not only to the periodic change of spring stiffness, but also to that of damping coefficient and the positive effect of the latter predominates over the negative one of the former. And the other point is that the motion of the driving person is usually with the frequency not twice as much as, but equal to the natural frequency of a pendulum composed of the swing and the driving person. These two points are clarified in this paper by considering the energy balance of swing driving with results retaining the essential features of swing motion as to the fundamental harmonic of the excited oscillation and within errors of small quantity of the 1st order. | |||||||
| 言語 | en | |||||||
| 出版者 | ||||||||
| 出版者 | 山梨大学工学部 | |||||||
| 言語 | ja | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | PISSN | |||||||
| 収録物識別子 | 0513-1871 | |||||||
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| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AN0024491X | |||||||
| 書誌情報 |
ja : 山梨大學工學部研究報告 en : Reports of the Faculty of Engineering, Yamanashi University 巻 23, p. 61-66, 発行日 1972 |
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| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
