Impact Force Identification using the Modal Transformation Method in Collocated and Non-Collocated Cases
Previous impact force identification has focused on collocated cases because noncollocated cases tend to be ill-posed. Considering the impact location is inaccessible, impact force identification using remote responses away from the impact location must be developed. This study initiates an effort t...
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| Format: | Article |
| Language: | English |
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Universiti Malaysia Pahang Publishing
2014-06-01
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| Series: | Journal of Mechanical Engineering and Sciences |
| Subjects: | |
| Online Access: | https://journal.ump.edu.my/jmes/article/view/8399 |
| _version_ | 1797694277609848832 |
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| author | Abdul Ghaffar Abdul Rahman Khoo Shin Yee Zubaidah Ismail Kong Keen Kuan Ong Zhi Chao Chong Wen Tong Siamak Noroozi |
| author_facet | Abdul Ghaffar Abdul Rahman Khoo Shin Yee Zubaidah Ismail Kong Keen Kuan Ong Zhi Chao Chong Wen Tong Siamak Noroozi |
| author_sort | Abdul Ghaffar Abdul Rahman |
| collection | DOAJ |
| description | Previous impact force identification has focused on collocated cases because noncollocated cases tend to be ill-posed. Considering the impact location is inaccessible, impact force identification using remote responses away from the impact location must be developed. This study initiates an effort to examine impact force identification for non-collocated case. A methodology utilizing operating deflection shape analysis, modal analysis and the modal transformation method (MTM) is presented to identify the unknown dynamic force. The performance of this approach is examined via experimental verification. The objective of this study is to examine the effectiveness of impact force identification by using MTM for both collocated and non-collocated cases. By measuring the response and frequency response function of the test rig, the time history of the unknown force is recovered by the force identification method where the impact location is known. The proposed method is examined at Points 1 and 15, which have satisfactory and poor curve fitting results respectively. It is found that force accuracy improves when the curve fitting result is enhanced. Experimental results show that impact force identification via MTM is applicable in both collocated and noncollocated cases, only if the curve fitting results satisfactory. |
| first_indexed | 2024-03-12T02:55:37Z |
| format | Article |
| id | doaj.art-e5aed13b0bd44342901bad5414872802 |
| institution | Directory Open Access Journal |
| issn | 2289-4659 2231-8380 |
| language | English |
| last_indexed | 2024-03-12T02:55:37Z |
| publishDate | 2014-06-01 |
| publisher | Universiti Malaysia Pahang Publishing |
| record_format | Article |
| series | Journal of Mechanical Engineering and Sciences |
| spelling | doaj.art-e5aed13b0bd44342901bad54148728022023-09-03T15:21:05ZengUniversiti Malaysia Pahang PublishingJournal of Mechanical Engineering and Sciences2289-46592231-83802014-06-016 96897410.15282/jmes.6.2014.23.0093Impact Force Identification using the Modal Transformation Method in Collocated and Non-Collocated CasesAbdul Ghaffar Abdul Rahman0Khoo Shin Yee1Zubaidah Ismail2Kong Keen Kuan3Ong Zhi Chao4Chong Wen Tong5Siamak Noroozi61Faculty of Mechanical Engineering, University of Malaysia Pahang 26600 Pekan, Pahang, Malaysia Department of Mechanical Engineering, Faculty of Engineering University of Malaya, 50603 Kuala Lumpur, MalaysiaDepartment of Civil Engineering, Faculty of Engineering University of Malaya, 50603 Kuala Lumpur, Malaysia 4Advanced Shock and Vibration Research Group, Applied Vibration Laboratory, Block R, Faculty of Engineering University of Malaya, Malaysia Department of Mechanical Engineering, Faculty of Engineering University of Malaya, 50603 Kuala Lumpur, MalaysiaDepartment of Mechanical Engineering, Faculty of Engineering University of Malaya, 50603 Kuala Lumpur, MalaysiaDepartment of Mechanical Engineering, Faculty of Engineering University of Malaya, 50603 Kuala Lumpur, MalaysiaSchool of Design, Engineering & Computing, Bournemouth University Poole, Dorset, BH12 5BB, UKPrevious impact force identification has focused on collocated cases because noncollocated cases tend to be ill-posed. Considering the impact location is inaccessible, impact force identification using remote responses away from the impact location must be developed. This study initiates an effort to examine impact force identification for non-collocated case. A methodology utilizing operating deflection shape analysis, modal analysis and the modal transformation method (MTM) is presented to identify the unknown dynamic force. The performance of this approach is examined via experimental verification. The objective of this study is to examine the effectiveness of impact force identification by using MTM for both collocated and non-collocated cases. By measuring the response and frequency response function of the test rig, the time history of the unknown force is recovered by the force identification method where the impact location is known. The proposed method is examined at Points 1 and 15, which have satisfactory and poor curve fitting results respectively. It is found that force accuracy improves when the curve fitting result is enhanced. Experimental results show that impact force identification via MTM is applicable in both collocated and noncollocated cases, only if the curve fitting results satisfactory.https://journal.ump.edu.my/jmes/article/view/8399frequency response functionimpact force identificationmodal analysismodal transformation methodoperating deflection shape analysis |
| spellingShingle | Abdul Ghaffar Abdul Rahman Khoo Shin Yee Zubaidah Ismail Kong Keen Kuan Ong Zhi Chao Chong Wen Tong Siamak Noroozi Impact Force Identification using the Modal Transformation Method in Collocated and Non-Collocated Cases Journal of Mechanical Engineering and Sciences frequency response function impact force identification modal analysis modal transformation method operating deflection shape analysis |
| title | Impact Force Identification using the Modal Transformation Method in Collocated and Non-Collocated Cases |
| title_full | Impact Force Identification using the Modal Transformation Method in Collocated and Non-Collocated Cases |
| title_fullStr | Impact Force Identification using the Modal Transformation Method in Collocated and Non-Collocated Cases |
| title_full_unstemmed | Impact Force Identification using the Modal Transformation Method in Collocated and Non-Collocated Cases |
| title_short | Impact Force Identification using the Modal Transformation Method in Collocated and Non-Collocated Cases |
| title_sort | impact force identification using the modal transformation method in collocated and non collocated cases |
| topic | frequency response function impact force identification modal analysis modal transformation method operating deflection shape analysis |
| url | https://journal.ump.edu.my/jmes/article/view/8399 |
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