Characteristics of adjustable dynamic vibration absorber
One of effective ways to suppress vibration of a mechanical system is using a dynamic vibration absorber. The dynamic vibration absorber consists of a mass, a spring and a damper. The optimal tuning of natural frequency and damping ratio of the dynamic vibration absorber is required to suppress vibr...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2018-06-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/84/862/84_18-00062/_pdf/-char/en |
| _version_ | 1797989125639372800 |
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| author | Kenya NEMOTO Hiroshi YAMAMOTO Terumasa NARUKAWA |
| author_facet | Kenya NEMOTO Hiroshi YAMAMOTO Terumasa NARUKAWA |
| author_sort | Kenya NEMOTO |
| collection | DOAJ |
| description | One of effective ways to suppress vibration of a mechanical system is using a dynamic vibration absorber. The dynamic vibration absorber consists of a mass, a spring and a damper. The optimal tuning of natural frequency and damping ratio of the dynamic vibration absorber is required to suppress vibration, so adding an adjustable mechanism of stiffness and damping of the dynamic vibration absorber makes tuning easy. This paper proposes a new design concept of an adjustable dynamic vibration absorber consisted of an adjustable mechanism of stiffness and damping. The adjustable mechanism of stiffness consists of an arm, a couple of coil springs and a rotatable spring holder. Stiffness is varied by rotating the spring holder. The adjustable mechanism of stiffness can expand the range of stiffness by increasing spring constant of a couple of coil springs. The adjustable mechanism of damping consisted of a copper plate, a couple of magnets and a linkage mechanism. Damping is varied by driving the linkage. Driving the linkage to tune damping is necessary large torque because of attractive force of magnets. A compensation spring attached to the linkage can reduce the driving torque for tuning the damping. We made the proposed adjustable dynamic vibration absorber and verified whether the proposed adjustable mechanism is valid by experiments. |
| first_indexed | 2024-04-11T08:15:17Z |
| format | Article |
| id | doaj.art-d8d3bdedde6c4ebdb4a197d9f3f9c138 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:15:17Z |
| publishDate | 2018-06-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-d8d3bdedde6c4ebdb4a197d9f3f9c1382022-12-22T04:35:11ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612018-06-018486218-0006218-0006210.1299/transjsme.18-00062transjsmeCharacteristics of adjustable dynamic vibration absorberKenya NEMOTO0Hiroshi YAMAMOTO1Terumasa NARUKAWA2Saitama Univ.Saitama Univ.Saitama Univ.One of effective ways to suppress vibration of a mechanical system is using a dynamic vibration absorber. The dynamic vibration absorber consists of a mass, a spring and a damper. The optimal tuning of natural frequency and damping ratio of the dynamic vibration absorber is required to suppress vibration, so adding an adjustable mechanism of stiffness and damping of the dynamic vibration absorber makes tuning easy. This paper proposes a new design concept of an adjustable dynamic vibration absorber consisted of an adjustable mechanism of stiffness and damping. The adjustable mechanism of stiffness consists of an arm, a couple of coil springs and a rotatable spring holder. Stiffness is varied by rotating the spring holder. The adjustable mechanism of stiffness can expand the range of stiffness by increasing spring constant of a couple of coil springs. The adjustable mechanism of damping consisted of a copper plate, a couple of magnets and a linkage mechanism. Damping is varied by driving the linkage. Driving the linkage to tune damping is necessary large torque because of attractive force of magnets. A compensation spring attached to the linkage can reduce the driving torque for tuning the damping. We made the proposed adjustable dynamic vibration absorber and verified whether the proposed adjustable mechanism is valid by experiments.https://www.jstage.jst.go.jp/article/transjsme/84/862/84_18-00062/_pdf/-char/endynamic vibration absorbervibration controladjustable mechanismstiffnessdamping |
| spellingShingle | Kenya NEMOTO Hiroshi YAMAMOTO Terumasa NARUKAWA Characteristics of adjustable dynamic vibration absorber Nihon Kikai Gakkai ronbunshu dynamic vibration absorber vibration control adjustable mechanism stiffness damping |
| title | Characteristics of adjustable dynamic vibration absorber |
| title_full | Characteristics of adjustable dynamic vibration absorber |
| title_fullStr | Characteristics of adjustable dynamic vibration absorber |
| title_full_unstemmed | Characteristics of adjustable dynamic vibration absorber |
| title_short | Characteristics of adjustable dynamic vibration absorber |
| title_sort | characteristics of adjustable dynamic vibration absorber |
| topic | dynamic vibration absorber vibration control adjustable mechanism stiffness damping |
| url | https://www.jstage.jst.go.jp/article/transjsme/84/862/84_18-00062/_pdf/-char/en |
| work_keys_str_mv | AT kenyanemoto characteristicsofadjustabledynamicvibrationabsorber AT hiroshiyamamoto characteristicsofadjustabledynamicvibrationabsorber AT terumasanarukawa characteristicsofadjustabledynamicvibrationabsorber |