Modal contribution index of subsystems for studying vibration countermeasures of a whole structure
When designing NVH (Noise, Vibration and Harshness) performance for complex structures such as automobiles, trains, and aircraft, it is rare to target all components of the whole structure and the subsystem be designed are often fixed. In recent years, the kernel Compliance Analysis (kCA) method has...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2020-12-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/87/893/87_20-00352/_pdf/-char/en |
| _version_ | 1797989041548820480 |
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| author | Yuichi MATSUMURA Masashi INABA Tsukasa OHZAWA Junichi SEMURA |
| author_facet | Yuichi MATSUMURA Masashi INABA Tsukasa OHZAWA Junichi SEMURA |
| author_sort | Yuichi MATSUMURA |
| collection | DOAJ |
| description | When designing NVH (Noise, Vibration and Harshness) performance for complex structures such as automobiles, trains, and aircraft, it is rare to target all components of the whole structure and the subsystem be designed are often fixed. In recent years, the kernel Compliance Analysis (kCA) method has been proposed as a method for designing NVH performance by dividing a whole structure into two subsystems. When modifying the structure of the subsystem to be designed by using the kCA, it is an important index which mode of the subsystem has a large contribution to the resonance of a whole structure. However, in the conventional sensitivity of structural modification, only those that determine the contribution of the subsystem for each mode of a whole structure are found. This paper, therefore, derives a new index for understanding the relative importance of the modes of subsystems to the resonance of a whole structure. As the index is derived based on the kCA, it has good compatibility with the design of NVH performance by the kCA. After derivation of the index, the effectiveness of the index will be verified through a numerical example of the resonance assignment of a whole structure combined with the kCA. |
| first_indexed | 2024-04-11T08:13:56Z |
| format | Article |
| id | doaj.art-a41fdd466e274d9b8843cb2e67e6058d |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:13:56Z |
| publishDate | 2020-12-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-a41fdd466e274d9b8843cb2e67e6058d2022-12-22T04:35:14ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612020-12-018789320-0035220-0035210.1299/transjsme.20-00352transjsmeModal contribution index of subsystems for studying vibration countermeasures of a whole structureYuichi MATSUMURA0Masashi INABA1Tsukasa OHZAWA2Junichi SEMURA3Department of Mechanical Engineering, Gifu UniversityDENSO CORPORATIONDENSO CORPORATIONDENSO CORPORATIONWhen designing NVH (Noise, Vibration and Harshness) performance for complex structures such as automobiles, trains, and aircraft, it is rare to target all components of the whole structure and the subsystem be designed are often fixed. In recent years, the kernel Compliance Analysis (kCA) method has been proposed as a method for designing NVH performance by dividing a whole structure into two subsystems. When modifying the structure of the subsystem to be designed by using the kCA, it is an important index which mode of the subsystem has a large contribution to the resonance of a whole structure. However, in the conventional sensitivity of structural modification, only those that determine the contribution of the subsystem for each mode of a whole structure are found. This paper, therefore, derives a new index for understanding the relative importance of the modes of subsystems to the resonance of a whole structure. As the index is derived based on the kCA, it has good compatibility with the design of NVH performance by the kCA. After derivation of the index, the effectiveness of the index will be verified through a numerical example of the resonance assignment of a whole structure combined with the kCA.https://www.jstage.jst.go.jp/article/transjsme/87/893/87_20-00352/_pdf/-char/enmodal analysisresonancesubstructuringpole assignmentmodal contribution factor |
| spellingShingle | Yuichi MATSUMURA Masashi INABA Tsukasa OHZAWA Junichi SEMURA Modal contribution index of subsystems for studying vibration countermeasures of a whole structure Nihon Kikai Gakkai ronbunshu modal analysis resonance substructuring pole assignment modal contribution factor |
| title | Modal contribution index of subsystems for studying vibration countermeasures of a whole structure |
| title_full | Modal contribution index of subsystems for studying vibration countermeasures of a whole structure |
| title_fullStr | Modal contribution index of subsystems for studying vibration countermeasures of a whole structure |
| title_full_unstemmed | Modal contribution index of subsystems for studying vibration countermeasures of a whole structure |
| title_short | Modal contribution index of subsystems for studying vibration countermeasures of a whole structure |
| title_sort | modal contribution index of subsystems for studying vibration countermeasures of a whole structure |
| topic | modal analysis resonance substructuring pole assignment modal contribution factor |
| url | https://www.jstage.jst.go.jp/article/transjsme/87/893/87_20-00352/_pdf/-char/en |
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