Modal and Harmonic Response Analyses of the Kenyir Dam Intake Section

Azizi Arbain, Ahmad Zhafran Ahmad Mazlan, Mohd Hafiz Zawawi, Mohd Rashid Mohd Radzi

Research output: Chapter in Book/Report/Conference proceedingChapter


Modal and harmonic responses are the important analyses that need to be carried out to determine the behavior of a structure by executing data in a real-time. Through these analyses, several parameters of the structure can be identified. These parameters which are natural frequencies, mode shapes and frequency response function (FRF) are critical for monitoring and investigating of the dynamic behavior as well as to avoid unnecessary resonance to the structure. In this paper, the intake section of Kenyir Hydropower Dam in Terengganu, Malaysia is taken into consideration for the modal and harmonic response analyses. Numerical study using ANSYS software is performed for the real scale size of the intake section with a proper boundary condition. Six most significant result are selected from the modal analysis including the FRF for all three axes of the intake section. From the FRFs, the highest natural frequency value occurred at 11.024 Hz with the maximum deflection of 2.3203 m in the y-direction direction. This value must be taken into consideration for any external induced vibration to avoid the failure of the dam structure.

Original languageEnglish
Title of host publicationLecture Notes in Civil Engineering
Number of pages9
Publication statusPublished - 01 Jan 2020

Publication series

NameLecture Notes in Civil Engineering
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Fingerprint Dive into the research topics of 'Modal and Harmonic Response Analyses of the Kenyir Dam Intake Section'. Together they form a unique fingerprint.

  • Cite this

    Arbain, A., Mazlan, A. Z. A., Zawawi, M. H., & Radzi, M. R. M. (2020). Modal and Harmonic Response Analyses of the Kenyir Dam Intake Section. In Lecture Notes in Civil Engineering (pp. 1055-1063). (Lecture Notes in Civil Engineering; Vol. 53). Springer.