Vibration Control of Space Truss Structure with Viscoelastic Laminated Composite Damper

2014 ◽  
Vol 971-973 ◽  
pp. 860-863 ◽  
Author(s):  
Bao Xian Jia ◽  
Feng Gao ◽  
Wen Feng Bian
Keyword(s):  
Vibration Control ◽  
Resonance Region ◽  
Truss Structure ◽  
Pulse Excitation ◽  
Control Effect ◽  
Modal Strain Energy ◽  
Viscoelastic Composite ◽  
Optimal Position ◽  
Space Truss ◽  
Space Truss Structure

This paper works on the vibration control of the space truss structure. The damper made of viscoelastic composite was designed according to the configuration parameters of the truss structure. The parameters of damper were obtained by using the method of modal strain energy. The optimal position configuration of the damper was determined. The truss in the time domain and frequency domain was analyzed. The dynamic characteristics of three structures which are without damper, with damper in the random position configuration and with damper in the optimal position configuration were compared in the sweep excitation and pulse excitation. The result shows that the structure with damper in the optimal position configuration has a great improvement in the amplitude of vibration in the first resonance region and the amplitude attenuation of the truss. The space truss structure with viscoelastic composite damper has excellent vibration control effect.

Damage Identification of Space Truss Structure Based on Strain Modal and Wavelet Transform

2015 ◽  
Vol 744-746 ◽  
pp. 33-37 ◽  
Author(s):  
Wei Ran Liu ◽  
Qi Lian Li ◽  
Hong Liang Yue
Keyword(s):  
Wavelet Transform ◽  
Structural Damage ◽  
Damage Identification ◽  
Damage Index ◽  
Truss Structure ◽  
Truss Structures ◽  
Wavelet Coefficients ◽  
Modal Strain Energy ◽  
Space Truss ◽  
Space Truss Structure

Based on the characteristics of space truss structures, the concept of modal strain energy is introduced and square difference in elemental modal strain is presented. Through the square difference in elemental modal strain and wavelet transform, this paper presents a method for space truss structure damage recognition. The structural damage index is presented with the change of wavelet coefficients. Numerical simulation results show that: this method is effective to locate the single, multiple damages and light, severe damage with the first mode information. The preliminary tries for damage extent identification were made by the wavelet coefficients.

scholarly journals Mechanism and Control of Mobile Robot on H-Type Space Truss Structure.

1996 ◽  
Vol 62 (602) ◽  
pp. 3818-3825
Author(s):  
Toshio FUKUDA ◽  
Hideo MATSUURA ◽  
Fumihito ARAI ◽  
Kenji NISHIBORI ◽  
Takashi OGURI ◽  
...  
Keyword(s):  
Mobile Robot ◽  
Truss Structure ◽  
Type Space ◽  
Space Truss ◽  
Space Truss Structure ◽  
And Control

Fire Protection of Steel Space Truss Structures

2013 ◽  
Vol 671-674 ◽  
pp. 479-483
Author(s):  
Kai Xiang ◽  
Guo Hui Wang ◽  
Bi Zhao
Keyword(s):  
Fire Protection ◽  
Steel Structures ◽  
Truss Structure ◽  
Truss Structures ◽  
Research Results ◽  
Advantages And Disadvantages ◽  
Screen Method ◽  
Space Truss ◽  
Protection Method ◽  
Space Truss Structure

The fire protection method of steel space truss structures was researched. Fire protection methods of steel structures were listed. For steel space truss structures, the advantages and disadvantages of fire protection methods were introduced. The screen method was suitable for fire protection of steel space truss structures. One project of fire protection of steel space truss structure was shown as an example. The process of screen method was provided for fire protection of steel space truss structures. According to this project, the technology of fire protection of steel space truss structures was enriched. The research results could help to deal with fire protection of steel space truss structures.

Sign in / Sign up

Export Citation Format

Share Document