Homogenous asymptotic analysis on vibration energy dissipation characteristics of periodical honeycomb reinforced composite laminate filled with viscoelastic damping material

2021 ◽  
Vol 258 ◽  
pp. 113307
Author(s):  
Xiaoqiang Zhou ◽  
Daoyuan Yu ◽  
Shanqiang Zhang
Keyword(s):  
Energy Dissipation ◽  
Asymptotic Analysis ◽  
Composite Laminate ◽  
Vibration Energy ◽  
Viscoelastic Damping ◽  
Reinforced Composite ◽  
Damping Material ◽  
Viscoelastic Damping Material

Experimental investigation of the dissipation characteristic of sandwich structures with periodically perforated viscoelastic damping material core

2019 ◽  
Vol 25 (14) ◽  
pp. 2008-2024 ◽  
Author(s):  
X. Q. Zhou ◽  
L. Wang ◽  
D.Y. Yu ◽  
C. Y. Zhang
Keyword(s):  
Energy Dissipation ◽  
Wave Energy ◽  
High Frequency ◽  
Sandwich Structures ◽  
Experimental Results ◽  
Viscoelastic Damping ◽  
Engineering Practice ◽  
Damping Material ◽  
Viscoelastic Damping Material ◽  
Dissipation Characteristic

Wave energy can be dissipated gradually when it is propagated in viscoelastic damping material (VDM) composite structures. In this paper, after the specimens with different opening ratios (ORs) of VDM layer are prepared, the elastic wave energy propagation and dissipation characteristic of periodically perforated VDM cored sandwich structures are investigated by an experimental method. The sandwich structures are discretized into several testing points in our experiment. When the complex velocity, equivalent effective mass, and external excitation forces have been obtained at each testing point by sensors, the energy dissipation in the sandwich structure is determined based on the energy dissipation mechanism of wave transmission in solid. The experimental results are then compared with theoretical and numerical simulation results. By analyzing the computational accuracy of theoretical and numerical results using experimental data, it is shown that high consistency between theoretical, numerical, and experimental results can be achieved, especially in the medium-frequency and high-frequency ranges. Thus, our experimental results demonstrate that periodically perforated VDM sandwich structures can be applied to engineering practice for their good performance of dissipation characteristics in the middle-frequency and high-frequency ranges.

Application Study of Viscoelastic Damping Material for the Anti-Galloping of Overhead Transmission Lines

2014 ◽  
Vol 884-885 ◽  
pp. 269-272 ◽  
Author(s):  
Na Sun ◽  
Kuan Jun Zhu ◽  
Bin Liu ◽  
Sheng Chun Liu ◽  
Liang Liu
Keyword(s):  
Mechanical Properties ◽  
Transmission Lines ◽  
Dynamic Mechanical Properties ◽  
Viscoelastic Damping ◽  
Application Study ◽  
Performance Requirements ◽  
Damping Material ◽  
Viscoelastic Damping Material ◽  
Good Energy ◽  
Physics Experiment

Based on the galloping mechanism of transmission line, it is determined to use viscoelastic damping material and energy effects of TMD to suppress galloping. The dynamic mechanical properties of viscoelastic damping material is studied, with the operating environment of the transmission lines, high-and-low-temperature physics experiment is carried out, while the experimental study on mechanical properties is carried out with the developed viscoelastic damping elements. It is showed that the viscoelastic material meets the anti-galloping device performance requirements for materials, it has a good energy consumption effect, suitable for application to anti-galloping of transmission lines.

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