Vibrational energy collection device based on nonlinear energy sink

A technology of vibration energy collection and nonlinear energy well, which is applied in the field of vibration and noise control and vibration energy collection, can solve the problems of equipment life damage, aggravate mechanical equipment vibration, increase mechanical system noise, etc., and achieve equipment vibration suppression, structure Compactness and high vibration absorption efficiency

Inactive Publication Date: 2018-10-30
NAVAL UNIV OF ENG PLA
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Problems solved by technology

The resonance phenomenon will aggravate the vibration of mechanical equipment, incre

Method used

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  • Vibrational energy collection device based on nonlinear energy sink
  • Vibrational energy collection device based on nonlinear energy sink
  • Vibrational energy collection device based on nonlinear energy sink

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Embodiment Construction

[0028] In order to better understand the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments, but the content of the present invention is not limited to the following embodiments.

[0029] Such as Figure 1-4 As shown, a vibration energy harvesting device based on a nonlinear energy trap, which includes a base plate 1, a nonlinear energy trap mechanism and a vibration energy harvesting unit; the base plate 1 can be fixed on the mechanical equipment that needs vibration reduction by hanging or clamping On the outer surface, a nonlinear energy well mechanism and a vibration energy collection unit are arranged, and the whole device has an axisymmetric structure;

[0030] Among them, the nonlinear energy trap mechanism includes a buckling beam 2 fixed at both ends, a middle magnet 7, an outer magnet 4 and a mass block 8, the middle magnet 7 and the outer magnet 4 are both cyl...

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Abstract

The invention belongs to the technical field of vibration noise control and energy collection, and relates to a mechanical device integrating the functions of broadband vibration absorption and vibrational energy collection. The mechanical device mainly comprises a baseplate, a nonlinear energy sink mechanism and a vibrational energy collection unit, wherein a buckling beam, the two ends of whichare compressed, and magnetic spring mechanisms arranged at the two sides jointly provide the pure cubic nonlinear stiffness required by the nonlinear energy sink; and the vibrational energy collectionunit mainly comprises an induction coil. The mechanical device can realize the fast, efficient and irreversible transfer of vibrational energy of external mechanical equipment to the non-linear energy sink mechanism in a broadband range, so that the equipment vibration is suppressed; energy absorbed by the non-linear energy sink mechanism can be further dissipated through electromagnetic dampingand is converted into electrical energy for storage, and thus, the dual functions of vibration control and energy collection are realized. The mechanical device has the advantages of wide vibration absorption frequency band, high vibration absorption efficiency, high energy collection efficiency and the like, is simple and compact in structure and has strong applicability.

Description

technical field [0001] The invention belongs to the technical fields of vibration and noise control and vibration energy collection, and in particular relates to a vibration energy collection device based on a nonlinear energy well. Background technique [0002] As we all know, dynamic vibration absorbers are usually composed of mass blocks, springs and viscous dampers, and are widely used in buildings, machinery and other structures. Traditional linear dynamic vibration absorbers can only effectively suppress vibration when the natural frequency of the vibration absorber is equal to the vibration frequency of the structure. , and has two resonance peaks. In order to overcome the disadvantage that the linear dynamic vibration absorber can only suppress vibration in a narrow frequency range, in recent years, many scholars at home and abroad have shown that introducing nonlinearity into the dynamic vibration absorber can effectively increase vibration suppression. The bandwidt...

Claims

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Application Information

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IPC IPC(8): F16F15/02F16F15/03H02J7/32
CPCF16F15/02F16F15/03H02J7/32
Inventor 刘树勇楼京俊李爽杨庆超柴凯陈志敏黄梦秋
Owner NAVAL UNIV OF ENG PLA
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