Abstract
To solve the limited vibration consumption of the traditional tubular damping structure (TTDS), the tubular transition layer damping structure (TTLDS) is proposed; Based on viscoelastic materials and theories of thin cylindrical shells, the governing equation, the first order matrix differential equation describing vibration of TTLDS under harmonic excitation, is derived by considering the interaction between all layers and the dissipation caused by the shear deformation for transition layer and damping layer. By using the extended homogeneous capacity precision integration method to solve the control equation, a semi-analytical method for studying the vibration and damping characteristics of TTLDS is given. By way of comparison, the correctness of the method provided in paper is verified. At last, the influence of thickness, material and location of transition layer on damping effect is analyzed. The results show that the change for the thickness or material of the transition layer can make the structural damping effect change greatly, while the change for location of the transition layer plays only a few roles on the structural damping effect.
Highlights
The Tubular structure has a good carrying capacity and can meet those requirements with enough stiffness and strength and with a lighter weight
On the premise of meeting structure size and weight, the structural damping effect can be improved by increasing the thickness of transition layer
The paper discusses the effects of parameters for transition layer on the structural damping and achieves the following conclusions: 1) The thickness of transition layer can play a significant role on structural damping effect
Summary
The Tubular structure has a good carrying capacity and can meet those requirements with enough stiffness and strength and with a lighter weight. Cheng-feng Liu et al [4] conducted topological optimization analysis and experimental research on the tubular damping structure by using evolutionary structural optimization; Being aimed at the vibration characteristics, Hui-rong Shi et al [5] gave the local tubular damping structure model, analyzed the vibration characteristics and optimized it; Tai-hong Chen et al [6] analyzed the damping effect of aluminum tube with a constrained damping layer by using layer by layer displacement theory They compared the natural frequency, modal loss factor and frequency response of the damping tube with the original one and drew the conclusion. The damping characteristics are analyzed through using the method of extend homogeneous capacity precision integration [17] to solve the ordinary differential equation
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