Experimental Modal Analysis and Operational Deflection Shape Analysis for Kenyir Dam Spillway Physical Model
Kenyir Dam spillway physical model was developed to determine the vibration characteristics of the dam spillway due to different spilling events. This study focused on determining the natural frequency of the dam spillway in order to compare it with the mode shape due to spilling events. The physica...
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Springer Science and Business Media Deutschland GmbH
2025
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| author | Hassan N.H. Zawawi M.H. Mazlan A.Z.A. Abas M.A. Zainol M.R.R.M.A. Radzi M.R.M. Kamaruddin M.A. |
| author2 | 57204683370 |
| author_facet | 57204683370 Hassan N.H. Zawawi M.H. Mazlan A.Z.A. Abas M.A. Zainol M.R.R.M.A. Radzi M.R.M. Kamaruddin M.A. |
| author_sort | Hassan N.H. |
| building | UNITEN Library |
| collection | Institutional Repository |
| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Kenyir Dam spillway physical model was developed to determine the vibration characteristics of the dam spillway due to different spilling events. This study focused on determining the natural frequency of the dam spillway in order to compare it with the mode shape due to spilling events. The physical model scale was 1:50 and similitude analysis using Froude law was used for scaling down purposes. There were 2 different water levels simulated for the experiment which were 2.92 and 2.96�m, and for each water level spilling, operational deflection shape (ODS) analysis was done for the spillway body. The most dominant mode shape was observed at the wall of the spillway at the downstream area. This mode shape corresponded to the natural frequency of 2801.1�Hz and cause an overall deflection amplitude of 0.353�m for a water level of 2.96�m. The numerical analysis was completed in order to compare the experimental result and it showed that the percentage differences for all parts were below 10%, which is generally below an allowable error percentage. The conclusion from this study was the experimental natural frequencies and mode shapes for all the parts show good agreement with the numerical analysis of vibration characteristics of Kenyir Dam spillway physical model. ? The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024. |
| format | Conference paper |
| id | my.uniten.dspace-37183 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2025 |
| publisher | Springer Science and Business Media Deutschland GmbH |
| record_format | dspace |
| spelling | my.uniten.dspace-371832025-03-03T15:48:22Z Experimental Modal Analysis and Operational Deflection Shape Analysis for Kenyir Dam Spillway Physical Model Hassan N.H. Zawawi M.H. Mazlan A.Z.A. Abas M.A. Zainol M.R.R.M.A. Radzi M.R.M. Kamaruddin M.A. 57204683370 39162217600 57216895962 56893346700 58601268100 57204677038 44361188400 Deflection (structures) Modal analysis Numerical analysis Spillways Vibration analysis Water levels Dam spillway Deflection Experimental modal analyse Experimental modal analysis Mode shapes Operational deflection shape Operational deflection shapes Physical modelling Shape-analysis Vibration characteristics Natural frequencies Kenyir Dam spillway physical model was developed to determine the vibration characteristics of the dam spillway due to different spilling events. This study focused on determining the natural frequency of the dam spillway in order to compare it with the mode shape due to spilling events. The physical model scale was 1:50 and similitude analysis using Froude law was used for scaling down purposes. There were 2 different water levels simulated for the experiment which were 2.92 and 2.96�m, and for each water level spilling, operational deflection shape (ODS) analysis was done for the spillway body. The most dominant mode shape was observed at the wall of the spillway at the downstream area. This mode shape corresponded to the natural frequency of 2801.1�Hz and cause an overall deflection amplitude of 0.353�m for a water level of 2.96�m. The numerical analysis was completed in order to compare the experimental result and it showed that the percentage differences for all parts were below 10%, which is generally below an allowable error percentage. The conclusion from this study was the experimental natural frequencies and mode shapes for all the parts show good agreement with the numerical analysis of vibration characteristics of Kenyir Dam spillway physical model. ? The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024. Final 2025-03-03T07:48:22Z 2025-03-03T07:48:22Z 2024 Conference paper 10.1007/978-981-99-6026-2_48 2-s2.0-85181976918 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85181976918&doi=10.1007%2f978-981-99-6026-2_48&partnerID=40&md5=bb962f67fac2bfedb215b04e6b9cf192 https://irepository.uniten.edu.my/handle/123456789/37183 386 653 663 Springer Science and Business Media Deutschland GmbH Scopus |
| spellingShingle | Deflection (structures) Modal analysis Numerical analysis Spillways Vibration analysis Water levels Dam spillway Deflection Experimental modal analyse Experimental modal analysis Mode shapes Operational deflection shape Operational deflection shapes Physical modelling Shape-analysis Vibration characteristics Natural frequencies Hassan N.H. Zawawi M.H. Mazlan A.Z.A. Abas M.A. Zainol M.R.R.M.A. Radzi M.R.M. Kamaruddin M.A. Experimental Modal Analysis and Operational Deflection Shape Analysis for Kenyir Dam Spillway Physical Model |
| title | Experimental Modal Analysis and Operational Deflection Shape Analysis for Kenyir Dam Spillway Physical Model |
| title_full | Experimental Modal Analysis and Operational Deflection Shape Analysis for Kenyir Dam Spillway Physical Model |
| title_fullStr | Experimental Modal Analysis and Operational Deflection Shape Analysis for Kenyir Dam Spillway Physical Model |
| title_full_unstemmed | Experimental Modal Analysis and Operational Deflection Shape Analysis for Kenyir Dam Spillway Physical Model |
| title_short | Experimental Modal Analysis and Operational Deflection Shape Analysis for Kenyir Dam Spillway Physical Model |
| title_sort | experimental modal analysis and operational deflection shape analysis for kenyir dam spillway physical model |
| topic | Deflection (structures) Modal analysis Numerical analysis Spillways Vibration analysis Water levels Dam spillway Deflection Experimental modal analyse Experimental modal analysis Mode shapes Operational deflection shape Operational deflection shapes Physical modelling Shape-analysis Vibration characteristics Natural frequencies |
| url_provider | http://dspace.uniten.edu.my/ |