文章摘要
Study on Dynamic Performance of Viscoelastic Constrained Damping Layer Structures
Received:July 06, 2022  Revised:July 06, 2022
DOI：10.12136/j.issn.1000-890X.2023.07.0490
Key Words: constrained damping layer structure；viscoelastic material；vibration attenuation；loss factor；dynamic performance
Author NameAffiliationE-mail
ZHAO Miaomiao* Xi’an ASRIC Aviation Technology Co.，Ltd；China Aircraft Strength Research Institute；Aeronautical Key Laboratory of Aeronautical Acoustics and Vibration sxzhaomiaomiao@126.com 
DUAN Yuxing Xi’an ASRIC Aviation Technology Co.，Ltd；China Aircraft Strength Research Institute；Aeronautical Key Laboratory of Aeronautical Acoustics and Vibration  
YANG Li Xi’an ASRIC Aviation Technology Co.，Ltd；China Aircraft Strength Research Institute；Aeronautical Key Laboratory of Aeronautical Acoustics and Vibration  
HOU Feng Xi’an ASRIC Aviation Technology Co.，Ltd；China Aircraft Strength Research Institute；Aeronautical Key Laboratory of Aeronautical Acoustics and Vibration  
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Abstract:
      The dynamic performance of the viscoelastic constrained damping layer structure（abbreviated as constrained damping layer structure） was studied.The results showed that butyl rubber could be well applied as the damping layer material of constrained damping layer structure.The constrained damping layer structure could effectively reduce the vibration at the resonant frequency within the range of 50～2 050 Hz，while moving the resonant frequency towards the low frequency.As the loss factor，storage modulus and thickness of the damping layer material increased，the structural loss factor of the constrained damping layer structure increased，and the vibration attenuation effect of the structure was significant.Moreover，the simulation results of the vibration attenuation of the constrained damping layer structure were consistent with the experimental results.This study could provide a reference for the design and optimization of the constrained damping layer structure.
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