Structural vibration response and testing estimation of modal properties amplitude dependent modal properties
In this thesis, we are going to look at oscillatory behaviors i.e., vibrations of a structure given by basic structural dynamic theories. Structures in the real world are generally so complicated that it is very hard to come up with a formulated process to get theoretical modal properties by convent...
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sg-ntu-dr.10356-1633022022-12-01T01:50:16Z Structural vibration response and testing estimation of modal properties amplitude dependent modal properties Zhou, Honghao Ivan Au School of Civil and Environmental Engineering ivanau@ntu.edu.sg Engineering::Civil engineering In this thesis, we are going to look at oscillatory behaviors i.e., vibrations of a structure given by basic structural dynamic theories. Structures in the real world are generally so complicated that it is very hard to come up with a formulated process to get theoretical modal properties by conventional structural analysis methods. The main emphasis of this thesis is to explore various approaches implemented in the modern vibration response testing industry, which estimate the modal properties of a structure via the response data exclusively. This process, applying basic ideas of Operational Modal Analysis (OMA), provides a possibility for determining the modal properties of complicated structures whose properties are difficult to obtain. The methods elaborated in later chapters include Logarithmic Decrement Method, Half-power Bandwidth Method, and Impact Hammer Test. Some basic concepts of mathematical tools (i.e., Fourier analysis) we use are also included. Furthermore, this thesis also involves a scratch of the topic ‘amplitude-dependent modal property’, investigating the matter of how modal properties possibly vary with the change of vibration amplitude. This thesis reflects the effort I have put into my undergraduate Final Year Project (FYP) at NTU. Bachelor of Engineering (Civil) 2022-12-01T01:50:16Z 2022-12-01T01:50:16Z 2022 Final Year Project (FYP) Zhou, H. (2022). Structural vibration response and testing estimation of modal properties amplitude dependent modal properties. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/163302 https://hdl.handle.net/10356/163302 en ST-01 application/pdf Nanyang Technological University |
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Engineering::Civil engineering Zhou, Honghao Structural vibration response and testing estimation of modal properties amplitude dependent modal properties |
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In this thesis, we are going to look at oscillatory behaviors i.e., vibrations of a structure given by basic structural dynamic theories. Structures in the real world are generally so complicated that it is very hard to come up with a formulated process to get theoretical modal properties by conventional structural analysis methods.
The main emphasis of this thesis is to explore various approaches implemented in the modern vibration response testing industry, which estimate the modal properties of a structure via the response data exclusively. This process, applying basic ideas of Operational Modal Analysis (OMA), provides a possibility for determining the modal properties of complicated structures whose properties are difficult to obtain. The methods elaborated in later chapters include Logarithmic Decrement Method, Half-power Bandwidth Method, and Impact Hammer Test. Some basic concepts of mathematical tools (i.e., Fourier analysis) we use are also included.
Furthermore, this thesis also involves a scratch of the topic ‘amplitude-dependent modal property’, investigating the matter of how modal properties possibly vary with the change of vibration amplitude.
This thesis reflects the effort I have put into my undergraduate Final Year Project (FYP) at NTU. |
author2 |
Ivan Au |
author_facet |
Ivan Au Zhou, Honghao |
format |
Final Year Project |
author |
Zhou, Honghao |
author_sort |
Zhou, Honghao |
title |
Structural vibration response and testing estimation of modal properties amplitude dependent modal properties |
title_short |
Structural vibration response and testing estimation of modal properties amplitude dependent modal properties |
title_full |
Structural vibration response and testing estimation of modal properties amplitude dependent modal properties |
title_fullStr |
Structural vibration response and testing estimation of modal properties amplitude dependent modal properties |
title_full_unstemmed |
Structural vibration response and testing estimation of modal properties amplitude dependent modal properties |
title_sort |
structural vibration response and testing estimation of modal properties amplitude dependent modal properties |
publisher |
Nanyang Technological University |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/163302 |
_version_ |
1751548500146913280 |