|
|||||
 |
|
|
|
|
|
Modeling and
experimentation of a viscoelastic microvibration damper based
on a chain network model
Chao Xu, Zhao-Dong Xu, Teng Ge and Ya-Xin Liao |
|
Vol. 11 (2016), No. 4, 413–432
|
|
DOI: 10.2140/jomms.2016.11.413
|
Abstract |
|
Viscoelastic (VE) dampers are widely used to attenuate structural vibration. Studies have mainly focused on the employment of VE dampers for reducing structural vibration in normal conditions, and only a few studies have considered the microvibration condition. In this paper, theoretical and experimental studies on the VE microvibration damper are conducted. First, the damping mechanism of the VE microvibration damper is analyzed from microperspectives and a mathematical model based on the chain network model is proposed. The contributions of cross-link and free-chain network chains to the damping characteristics of VE material are considered in this model. Second, an experimental study of the VE microvibration damper is conducted to verify the proposed model and to reveal the dynamic properties of the VE microvibration damper. The experimental results show that the dynamic properties of VE material are influenced by excitation frequency and insignificantly affected by displacement amplitude, and the VE material has good energy dissipation capacity. The proposed model is verified by comparing the experimental data and the numerical results. The results indicate that the proposed model can accurately describe the dynamic properties of the VE microvibration damper at different frequencies. |
Keywords
viscoelastic microvibration damper, high energy
dissipation, material microstructure, chain structure
model, performance test
|
Milestones
Received: 2 November 2015
Revised: 21 April 2016
Accepted: 6 May 2016
Published: 4 August 2016
|
Authors |
| Chao Xu | |
| Key Laboratory of C&PC
Structures of the Ministry of Education Southeast University Nanjing, 210096 China |
|
| Zhao-Dong Xu | |
| Key Laboratory of C&PC
Structures of the Ministry of Education Southeast University Nanjing, 210096 China |
|
| Teng Ge | |
| Key Laboratory of C&PC
Structures of the Ministry of Education Southeast University Nanjing, 210096 China |
|
| Ya-Xin Liao | |
| Changjiang Institute of Survey,
Planning, Design and Research Wuhan, 430010 China |
|
|
