| Semiactive variable stiffness control for parametric vibration of cables |
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| 作者姓名： | 李惠 陈文礼 欧进萍 |
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| 作者单位： | [1]School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China [2]Dalian University of Technology, Dalian 116024, China |
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| 摘 要： | In this paper, a semiactive variable stiffness （SVS） device is used to decrease cable oscillations caused by parametric excitation, and the equation of motion of the parametric vibration of the cable with this SVS device is presented. The ON/OFF control algorithm is used to operate the SVS control device. The vibration response of the cable with the SVS device is numerically studied for a variety of additional stiffness combinations in both the frequency and time domains and for both parametric and classical resonance vibration conditions. The numerical studies further consider the cable sag effect. From the numerical results, it is shown that the SVS device effectively suppresses the cable resonance vibration response, and as the stiffness of the device increases, the device achieves greater suppression of vibration. Moreover, it was shown that the SVS device increases the critical axial displacement of the excitation under cable parametric vibration conditions.
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| 关 键 词： | 缆索 参量振动 半主动变量刚度控制 谐振 |
| 文章编号： | 1671-3664（2006）02-0215-08 |
| 收稿时间： | 2006-08-18 |
| 修稿时间： | 2006-10-15 |
Semiactive variable stiffness control for parametric vibration of cables |
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| Hui Li,Wenli Chen,Jinping Ou.Semiactive variable stiffness control for parametric vibration of cables[J].Earthquake Engineering and Engineering Vibration,2006,5(2):215-222. |
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| Authors: | Hui Li Wenli Chen Jinping Ou |
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| Institution: | 1. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;Dalian University of Technology, Dalian 116024, China |
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| Abstract: | In this paper, a semiactive variable stiffness (SVS) device is used to decrease cable oscillations caused by parametric excitation, and the equation of motion of the parametric vibration of the cable with this SVS device is presented. The ON/OFF control algorithm is used to operate the SVS control device. The vibration response of the cable with the SVS device is numerically studied for a variety of additional stiffness combinations in both the frequency and time domains and for both parametric and classical resonance vibration conditions. The numerical studies further consider the cable sag effect. From the numerical results, it is shown that the SVS device effectively suppresses the cable resonance vibration response, and as the stiffness of the device increases, the device achieves greater suppression of vibration. Moreover, it was shown that the SVS device increases the critical axial displacement of the excitation under cable parametric vibration conditions. |
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| Keywords: | cable semiactive control semiactive variable stiffness control parametric vibration resonance nonlinearity |
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