Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation Area
To study the influence of annular trenches on a vibration isolation area, the depth, width, vibration source distance, and central angle of the trench are analysed as research variables, and a contour diagram of the amplitude reduction ratio is drawn based on an outdoor test of the trench. Taking an...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/7801085 |
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| author | Jinglei Liu Chuanqing Yu Kai Li Jie Liu Mengyao Wen |
| author_facet | Jinglei Liu Chuanqing Yu Kai Li Jie Liu Mengyao Wen |
| author_sort | Jinglei Liu |
| collection | DOAJ |
| description | To study the influence of annular trenches on a vibration isolation area, the depth, width, vibration source distance, and central angle of the trench are analysed as research variables, and a contour diagram of the amplitude reduction ratio is drawn based on an outdoor test of the trench. Taking an area with an amplitude reduction ratio less than 0.40 as the evaluation index of the effective vibration isolation area, the effects of the above geometric parameters on the vibration isolation area are analysed. Limited to the test conditions of this paper, the results show that the depth, vibration source distance, and deep width ratio are the important factors affecting the effective vibration isolation area; with the increase of the above parameters, the effective vibration isolation area increases significantly, but the area increase rate decreases gradually. The width has a relatively little effect on the effective vibration isolation area. When the ratio of depth to width is from 7.05 to 9.15, and the width reaches 0.23 times the Rayleigh wavelength, the annular trench can have a good effective vibration isolation area. When the central angle of the trench is less than 90°, a discontinuous effective vibration isolation area will form in the vibration isolation region. The selection of the central angle of the trench is related to the frequency. With the same trench size, the effective vibration isolation area decreases as frequency decreases. In addition, the effect of distance depth ratio on the effective vibration isolation area presents a fluctuation. When the ratio of distance to depth is from 1.21 to 2.05, a good effective vibration isolation area can be obtained and it is reasonable. |
| format | Article |
| id | doaj-art-21337b5e8f3c4530a81cf6825e5d34af |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-21337b5e8f3c4530a81cf6825e5d34af2025-08-20T02:03:55ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/78010857801085Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation AreaJinglei Liu0Chuanqing Yu1Kai Li2Jie Liu3Mengyao Wen4Hebei Key Laboratory of Diagnosis, Reconstruction and Anti-Disaster of Civil, Zhangjia Kou 075000, ChinaHebei Key Laboratory of Diagnosis, Reconstruction and Anti-Disaster of Civil, Zhangjia Kou 075000, ChinaSchool of Civil Engineering, Hebei University of Architecture, Zhangjiakou 075000, ChinaSchool of Civil Engineering, Hebei University of Architecture, Zhangjiakou 075000, ChinaSchool of Civil Engineering, Hebei University of Architecture, Zhangjiakou 075000, ChinaTo study the influence of annular trenches on a vibration isolation area, the depth, width, vibration source distance, and central angle of the trench are analysed as research variables, and a contour diagram of the amplitude reduction ratio is drawn based on an outdoor test of the trench. Taking an area with an amplitude reduction ratio less than 0.40 as the evaluation index of the effective vibration isolation area, the effects of the above geometric parameters on the vibration isolation area are analysed. Limited to the test conditions of this paper, the results show that the depth, vibration source distance, and deep width ratio are the important factors affecting the effective vibration isolation area; with the increase of the above parameters, the effective vibration isolation area increases significantly, but the area increase rate decreases gradually. The width has a relatively little effect on the effective vibration isolation area. When the ratio of depth to width is from 7.05 to 9.15, and the width reaches 0.23 times the Rayleigh wavelength, the annular trench can have a good effective vibration isolation area. When the central angle of the trench is less than 90°, a discontinuous effective vibration isolation area will form in the vibration isolation region. The selection of the central angle of the trench is related to the frequency. With the same trench size, the effective vibration isolation area decreases as frequency decreases. In addition, the effect of distance depth ratio on the effective vibration isolation area presents a fluctuation. When the ratio of distance to depth is from 1.21 to 2.05, a good effective vibration isolation area can be obtained and it is reasonable.http://dx.doi.org/10.1155/2020/7801085 |
| spellingShingle | Jinglei Liu Chuanqing Yu Kai Li Jie Liu Mengyao Wen Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation Area Shock and Vibration |
| title | Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation Area |
| title_full | Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation Area |
| title_fullStr | Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation Area |
| title_full_unstemmed | Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation Area |
| title_short | Test on the Influence of Geometric Parameters of an Annular Trench on the Vibration Isolation Area |
| title_sort | test on the influence of geometric parameters of an annular trench on the vibration isolation area |
| url | http://dx.doi.org/10.1155/2020/7801085 |
| work_keys_str_mv | AT jingleiliu testontheinfluenceofgeometricparametersofanannulartrenchonthevibrationisolationarea AT chuanqingyu testontheinfluenceofgeometricparametersofanannulartrenchonthevibrationisolationarea AT kaili testontheinfluenceofgeometricparametersofanannulartrenchonthevibrationisolationarea AT jieliu testontheinfluenceofgeometricparametersofanannulartrenchonthevibrationisolationarea AT mengyaowen testontheinfluenceofgeometricparametersofanannulartrenchonthevibrationisolationarea |