Performance of Variable Negative Stiffness MRE Vibration Isolation System
Magnetorheological elastomer (MRE) vibration isolation devices can improve a system’s vibration response via adjustable stiffness and damping under different magnetic fields. Combined with negative stiffness design, these MRE devices can reduce a system’s stiffness and improve the vibration control...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/837657 |
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| _version_ | 1832549672012480512 |
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| author | Run-pu Li Cheng-bin Du Fei Guo Guo-jun Yu Xiao-guo Lin |
| author_facet | Run-pu Li Cheng-bin Du Fei Guo Guo-jun Yu Xiao-guo Lin |
| author_sort | Run-pu Li |
| collection | DOAJ |
| description | Magnetorheological elastomer (MRE) vibration isolation devices can improve a system’s vibration response via adjustable stiffness and damping under different magnetic fields. Combined with negative stiffness design, these MRE devices can reduce a system’s stiffness and improve the vibration control effect significantly. This paper develops a variable negative stiffness MRE isolation device by combining an improved separable iron core with laminated MREs. The relationship between the negative stiffness and the performance of the device is obtained by mathematical transformation. Its vibration response under simple harmonic excitation at small amplitude and the impact of the volume fraction of soft magnetic particles on the isolation system are also analyzed. The results show that the negative stiffness produced by the magnetic force is a major factor affecting the capacity of the isolation system. Compared to devices of the same size, the isolation system equipped with low-particle volume fraction MREs demonstrates better performance. |
| format | Article |
| id | doaj-art-9a86ec44131f470085c9170a6b4821f0 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-9a86ec44131f470085c9170a6b4821f02025-02-03T06:10:50ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/837657837657Performance of Variable Negative Stiffness MRE Vibration Isolation SystemRun-pu Li0Cheng-bin Du1Fei Guo2Guo-jun Yu3Xiao-guo Lin4Department of Engineering Mechanics, Hohai University, Nanjing 210098, ChinaDepartment of Engineering Mechanics, Hohai University, Nanjing 210098, ChinaDepartment of Engineering Mechanics, Hohai University, Nanjing 210098, ChinaFaculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, ChinaSchool of Architectural and Civil Engineering, Ningbo University of Technology, Ningbo 315016, ChinaMagnetorheological elastomer (MRE) vibration isolation devices can improve a system’s vibration response via adjustable stiffness and damping under different magnetic fields. Combined with negative stiffness design, these MRE devices can reduce a system’s stiffness and improve the vibration control effect significantly. This paper develops a variable negative stiffness MRE isolation device by combining an improved separable iron core with laminated MREs. The relationship between the negative stiffness and the performance of the device is obtained by mathematical transformation. Its vibration response under simple harmonic excitation at small amplitude and the impact of the volume fraction of soft magnetic particles on the isolation system are also analyzed. The results show that the negative stiffness produced by the magnetic force is a major factor affecting the capacity of the isolation system. Compared to devices of the same size, the isolation system equipped with low-particle volume fraction MREs demonstrates better performance.http://dx.doi.org/10.1155/2015/837657 |
| spellingShingle | Run-pu Li Cheng-bin Du Fei Guo Guo-jun Yu Xiao-guo Lin Performance of Variable Negative Stiffness MRE Vibration Isolation System Advances in Materials Science and Engineering |
| title | Performance of Variable Negative Stiffness MRE Vibration Isolation System |
| title_full | Performance of Variable Negative Stiffness MRE Vibration Isolation System |
| title_fullStr | Performance of Variable Negative Stiffness MRE Vibration Isolation System |
| title_full_unstemmed | Performance of Variable Negative Stiffness MRE Vibration Isolation System |
| title_short | Performance of Variable Negative Stiffness MRE Vibration Isolation System |
| title_sort | performance of variable negative stiffness mre vibration isolation system |
| url | http://dx.doi.org/10.1155/2015/837657 |
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