Preliminary Study on Vibration Analysis of Truss Structures

DOI: https://doi.org/10.62517/jcte.202406107

Author(s)

Jiangping Li, Xianyun Wang*, Jiaxin Yang, Wei Jiang

Affiliation(s)

North China University of Technology, Beijing 100144, China *Corresponding Author

Abstract

Truss structure is a common light structure, widely used in the field of engineering, often used in bridges, towers and other engineering projects. In order to study the dynamic characteristics of the truss structure and provide a more favorable basis for the design, the dynamic characteristics of the truss structure are tested in this paper, and the modal characteristics of the resonant condition are preliminarily analyzed according to the results of the test. First of all, by establishing the mathematical model of the truss structure, defining the frequency response function, and then Fourier transform, we can get the time domain signal of the excitation and the frequency of the dynamic response, and then use the finite element method to calculate the natural frequency of the structure. Then, the natural frequency and vibration mode are tested and analyzed, and the mechanism and influencing factors of resonance phenomenon are deeply discussed. Finally, the application prospect and limitation of vibration analysis of truss structure are discussed, and some improvement measures are proposed for the vibration problem of truss structure to improve the stability and anti-vibration ability of the structure. This test is of great significance for the design and optimization of the engineering based on truss structure, and provides feasible methods and ideas for researchers in related fields.

Keywords

Truss Structure; Modal Analysis; Natural Frequency; Vibration Mode

References

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