Semi-analytical dynamic modeling and vibration reduction analysis of bolted connection plates with constrained layer damping attached

ZHANG Rongfei1,2,SUN Wei1,2,LUO Haitao3,ZHANG Hui1,2

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (5) : 315-327.

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PDF(3884 KB)
Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (5) : 315-327.

Semi-analytical dynamic modeling and vibration reduction analysis of bolted connection plates with constrained layer damping attached

  • ZHANG Rongfei1,2,SUN Wei1,2,LUO Haitao3,ZHANG Hui1,2
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Abstract

It is difficult to suppress the vibration of the solar wing windsurfing in the space environment, so it is very significant to study the vibration reduction of the solar wing windsurfing. The double-lap bolted thin plates is used to simulate the unfolding state of the solar wing windsurfing, and the method of vibration suppression by attaching constrained layer damping (CLD) is studied. A semi-analytical dynamic model of the double-lap bolted thin plates with "H-type" CLD is established, including: the stress-strain relationship of CLD is derived by using the principle of interlaminar shear deformation, and the damping characteristics of the viscoelastic layer are characterized by complex modulus; considering the influence region of bolts, the stiffness, damping, and mass characteristics of the joint of the double-lap bolts are simulated by using compound spring element and modified mass; the orthogonal polynomial is introduced as the displacement admissible function, and the dynamic equations of bolted thin plates with "H-type" CLD is established by using Lagrange equation and Hamilton principle. An example study is carried out, and the experimental system is established to prove the rationality of the semi-analytical model of the composite structure in solving the natural characteristics and vibration response parameters. Moreover, the results of both the experiment and the semi-analytical model show that the “H-type” CLD has a vibration reduction effect on the double-lap bolted thin plates. Finally, based on the semi-analytical model of the model, the influence of the attaching area and the thickness of the CLD on the vibration reduction effect of the double-lap bolted thin plates is analyzed

Key words

CLD / Double-lap joint / Bolted plates / Semi-analytical dynamic modeling / Vibration reduction analysis

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ZHANG Rongfei1,2,SUN Wei1,2,LUO Haitao3,ZHANG Hui1,2. Semi-analytical dynamic modeling and vibration reduction analysis of bolted connection plates with constrained layer damping attached[J]. Journal of Vibration and Shock, 2024, 43(5): 315-327

References

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