Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging

Dam structure has to be inspected regularly in order to monitor its reliability due to the effect of flow-induced vibration. Vibration induced by the fluid (water) on the dam structure can lead to the catastrophic failure if the natural frequencies coincide with the frequencies of the water flow. In...

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Main Author:	Ghazali, Mohamad Hazwan Mohd
Format:	Thesis
Language:	English
Published:	2019
Subjects:	T Technology TJ1-1570 Mechanical engineering and machinery
Online Access:	http://eprints.usm.my/48588/1/Vibration%20Analysis%20Of%20The%20Chenderoh%20Dam%20Structure%20Due%20To%20The%20Effects%20Of%20Water%20Spilling%20And%20Surging.pdf
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spelling	my-usm-ep.485882021-11-17T03:42:11Z Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging 2019-08-01 Ghazali, Mohamad Hazwan Mohd T Technology TJ1-1570 Mechanical engineering and machinery Dam structure has to be inspected regularly in order to monitor its reliability due to the effect of flow-induced vibration. Vibration induced by the fluid (water) on the dam structure can lead to the catastrophic failure if the natural frequencies coincide with the frequencies of the water flow. In this research, the effects of water spilling and surging to the Malaysian Chenderoh Dam in terms of vibration are studied. For this purpose, only spillway and intake sections of the Chenderoh Dam are taken into consideration. Modal and Harmonic Analyses are carried out using ANSYS software version 18.2 (ANSYS 18.2) to determine the dynamic characteristics of the dam structure. Next, fluid-structure interaction (FSI) simulation study is conducted and the Operational Deflection Shapes (ODS) from the effect of flow-induced vibration are compared with the natural frequencies and mode shapes of the dam structure. From the results, the natural frequencies obtained for spillway and intake sections are 5.09 Hz and 2.76 Hz respectively. The FSI analysis produced the operating frequency of 4.71 Hz for Case 1 and 7.45 Hz for Case 2-4 of spillway section. This indicates that there is no resonance phenomenon during the operating condition of the spillway. However, resonance phenomenon may occurred for the Case 3 of intake section where the forcing frequency from the FSI analysis (2.35 Hz) coincides with the natural frequency of the intake section. This means that the intake is considered unsafe for this operational condition. Thus, a proper closing procedure for both gates should be conducted to avoid any failure to the structure. 2019-08 Thesis http://eprints.usm.my/48588/ http://eprints.usm.my/48588/1/Vibration%20Analysis%20Of%20The%20Chenderoh%20Dam%20Structure%20Due%20To%20The%20Effects%20Of%20Water%20Spilling%20And%20Surging.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Mekanik
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology TJ1-1570 Mechanical engineering and machinery
spellingShingle	T Technology TJ1-1570 Mechanical engineering and machinery Ghazali, Mohamad Hazwan Mohd Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging
description	Dam structure has to be inspected regularly in order to monitor its reliability due to the effect of flow-induced vibration. Vibration induced by the fluid (water) on the dam structure can lead to the catastrophic failure if the natural frequencies coincide with the frequencies of the water flow. In this research, the effects of water spilling and surging to the Malaysian Chenderoh Dam in terms of vibration are studied. For this purpose, only spillway and intake sections of the Chenderoh Dam are taken into consideration. Modal and Harmonic Analyses are carried out using ANSYS software version 18.2 (ANSYS 18.2) to determine the dynamic characteristics of the dam structure. Next, fluid-structure interaction (FSI) simulation study is conducted and the Operational Deflection Shapes (ODS) from the effect of flow-induced vibration are compared with the natural frequencies and mode shapes of the dam structure. From the results, the natural frequencies obtained for spillway and intake sections are 5.09 Hz and 2.76 Hz respectively. The FSI analysis produced the operating frequency of 4.71 Hz for Case 1 and 7.45 Hz for Case 2-4 of spillway section. This indicates that there is no resonance phenomenon during the operating condition of the spillway. However, resonance phenomenon may occurred for the Case 3 of intake section where the forcing frequency from the FSI analysis (2.35 Hz) coincides with the natural frequency of the intake section. This means that the intake is considered unsafe for this operational condition. Thus, a proper closing procedure for both gates should be conducted to avoid any failure to the structure.
format	Thesis
qualification_level	Master's degree
author	Ghazali, Mohamad Hazwan Mohd
author_facet	Ghazali, Mohamad Hazwan Mohd
author_sort	Ghazali, Mohamad Hazwan Mohd
title	Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging
title_short	Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging
title_full	Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging
title_fullStr	Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging
title_full_unstemmed	Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging
title_sort	vibration analysis of the chenderoh dam structure due to the effects of water spilling and surging
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Mekanik
publishDate	2019
url	http://eprints.usm.my/48588/1/Vibration%20Analysis%20Of%20The%20Chenderoh%20Dam%20Structure%20Due%20To%20The%20Effects%20Of%20Water%20Spilling%20And%20Surging.pdf
_version_	1747821950150901760

Vibration Analysis Of The Chenderoh Dam Structure Due To The Effects Of Water Spilling And Surging

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