Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure
When the thickness of a structure is reduced to decrease weight, it may experience structural vibration and disturbance. The use of passive patches is effective in addressing this issue when the loss factor is small or when space and weight are restricted. The greatest attenuation occurs when passiv...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2024/8891523 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832558691747889152 |
|---|---|
| author | Dongwoo Hong Kyeongnak Lee Byeongil Kim |
| author_facet | Dongwoo Hong Kyeongnak Lee Byeongil Kim |
| author_sort | Dongwoo Hong |
| collection | DOAJ |
| description | When the thickness of a structure is reduced to decrease weight, it may experience structural vibration and disturbance. The use of passive patches is effective in addressing this issue when the loss factor is small or when space and weight are restricted. The greatest attenuation occurs when passive patches are used across the entire coverage area. However, passive patches of reasonable size must be affixed to ensure that they are effective in terms of cost and design. In this paper, the sum of squares’ value for the bending mode shape is used to determine the location of a small passive patch to achieve vibration damping for multiple modes. Under the condition of forced vibration, the modal contribution of each mode is obtained. Using this contribution as a weight, the optimal position of the passive patch is determined as the maximum value obtained in the form of a linear combination multiplied by the curvature of the beam. Simulation and experiment were used to test the efficacy of the location determined for passive patches. It was determined that, depending on the location of the passive patch, the peak amplitude at the natural frequency of each mode decreased significantly, validating the effectiveness of the design method. |
| format | Article |
| id | doaj-art-dcc836a4e74644fd940ab349f8a3ced5 |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-dcc836a4e74644fd940ab349f8a3ced52025-02-03T01:31:53ZengWileyShock and Vibration1875-92032024-01-01202410.1155/2024/8891523Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D StructureDongwoo Hong0Kyeongnak Lee1Byeongil Kim2Daegu Mechatronics & Materials InstituteNeuros Co. Ltd.School of Mechanical EngineeringWhen the thickness of a structure is reduced to decrease weight, it may experience structural vibration and disturbance. The use of passive patches is effective in addressing this issue when the loss factor is small or when space and weight are restricted. The greatest attenuation occurs when passive patches are used across the entire coverage area. However, passive patches of reasonable size must be affixed to ensure that they are effective in terms of cost and design. In this paper, the sum of squares’ value for the bending mode shape is used to determine the location of a small passive patch to achieve vibration damping for multiple modes. Under the condition of forced vibration, the modal contribution of each mode is obtained. Using this contribution as a weight, the optimal position of the passive patch is determined as the maximum value obtained in the form of a linear combination multiplied by the curvature of the beam. Simulation and experiment were used to test the efficacy of the location determined for passive patches. It was determined that, depending on the location of the passive patch, the peak amplitude at the natural frequency of each mode decreased significantly, validating the effectiveness of the design method.http://dx.doi.org/10.1155/2024/8891523 |
| spellingShingle | Dongwoo Hong Kyeongnak Lee Byeongil Kim Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure Shock and Vibration |
| title | Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure |
| title_full | Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure |
| title_fullStr | Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure |
| title_full_unstemmed | Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure |
| title_short | Position Optimization of Passive Patch Based on Mode Contribution Factor for Vibration Attenuation of Asymmetric 1D Structure |
| title_sort | position optimization of passive patch based on mode contribution factor for vibration attenuation of asymmetric 1d structure |
| url | http://dx.doi.org/10.1155/2024/8891523 |
| work_keys_str_mv | AT dongwoohong positionoptimizationofpassivepatchbasedonmodecontributionfactorforvibrationattenuationofasymmetric1dstructure AT kyeongnaklee positionoptimizationofpassivepatchbasedonmodecontributionfactorforvibrationattenuationofasymmetric1dstructure AT byeongilkim positionoptimizationofpassivepatchbasedonmodecontributionfactorforvibrationattenuationofasymmetric1dstructure |