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Theoretical and Experimental Studies on Vibration Resistance of Composite Plates with Damping Coating

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Titel: Theoretical and Experimental Studies on Vibration Resistance of Composite Plates with Damping Coating
Autoren: Yichen Deng, Yezhuang Jin, Yao Yang, Bocheng Dong, Zelin Li, Hui Li
Quelle: Journal of Modern Mechanical Engineering and Technology. 9:67-75
Verlagsinformationen: Zeal Press, 2025.
Publikationsjahr: 2025
Schlagwörter: 0203 mechanical engineering, 02 engineering and technology, 0201 civil engineering
Beschreibung: This study performs both theoretical and experimental studies on the vibration resistance of composite plates with damping coating subjected to impulse excitation load. A dynamic model is first proposed and the key differential equations are derived to solve the natural frequencies, time-domain vibration response, and dynamic stiffness at any vibration response point regarding the excitation point of such a coated structure. Then, a dynamic experiment system of two plate specimens with and without DC knocked by a hammer excitation is set up. The measured data indicates that the proposed dynamic model is trustworthy for predicting natural frequencies and dynamic stiffness results. Furthermore, based on the calculated dynamic stiffness data associated with the first four modes, the anti-vibration contribution of DC is quantitatively evaluated. It can be found that the coating can indeed improve the vibration resistance of the structure by up to 74.7%. In addition, the vibration suppression effect of DC is found to be closely related to the mode order of such a structure as well as the selected boundary condition.
Publikationsart: Article
ISSN: 2409-9848
DOI: 10.31875/2409-9848.2022.09.8
Dokumentencode: edsair.doi...........a2b5d7a019b3bf6dce094ce0736c9e5f
Datenbank: OpenAIRE
Beschreibung
Abstract:This study performs both theoretical and experimental studies on the vibration resistance of composite plates with damping coating subjected to impulse excitation load. A dynamic model is first proposed and the key differential equations are derived to solve the natural frequencies, time-domain vibration response, and dynamic stiffness at any vibration response point regarding the excitation point of such a coated structure. Then, a dynamic experiment system of two plate specimens with and without DC knocked by a hammer excitation is set up. The measured data indicates that the proposed dynamic model is trustworthy for predicting natural frequencies and dynamic stiffness results. Furthermore, based on the calculated dynamic stiffness data associated with the first four modes, the anti-vibration contribution of DC is quantitatively evaluated. It can be found that the coating can indeed improve the vibration resistance of the structure by up to 74.7%. In addition, the vibration suppression effect of DC is found to be closely related to the mode order of such a structure as well as the selected boundary condition.
ISSN:24099848
DOI:10.31875/2409-9848.2022.09.8