Tuned mass damper with variable stiffness, variable mass and variable damping and design method thereof

A technology of tuning mass damping and variable mass, which is applied in the field of tuning mass dampers with variable stiffness, variable mass and variable damping, can solve problems such as poor adaptability and difficult adjustment, and achieves high frequency adjustment accuracy, high stability and reliability, The effect of increasing the suppression effect

Active Publication Date: 2021-11-12
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the existing tuned mass dampers, which can only suppress a certain order of vibration, need to adjust the natural frequency or damping by replacing parts, poor adaptability, and difficult adjustment, etc., and provide a variable Tuned mass damper with variable stiffness and mass variable damping and its design method

Method used

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  • Tuned mass damper with variable stiffness, variable mass and variable damping and design method thereof
  • Tuned mass damper with variable stiffness, variable mass and variable damping and design method thereof
  • Tuned mass damper with variable stiffness, variable mass and variable damping and design method thereof

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Embodiment 1

[0051] Such as Figure 1-5 As shown, a tuned mass damper with variable stiffness, variable mass and variable damping according to the present invention includes a mass system, a support 3 and a damping system, the mass system includes a mass block 1, and it is characterized in that the support 3 is provided with a number of guide rods 6, the quality system can slide along the guide rods 6, the first spring 4 is sleeved on the guide rod 6, one end of the first spring 4 is connected to the quality system, and the other One end is connected to the support 3;

[0052] The damping system is located between the mass system and the support 3, and the damping system includes an adjustable axial damper 5;

[0053] Several second springs 7 are also arranged on the support 3, and the second springs 7 are connected with a slider 71, and a locking structure is connected between the mass system and the slider 71, by locking or disconnecting the The locking structure enables the slider 71 ...

Embodiment 2

[0060] A tuned mass damper with variable stiffness, variable mass and variable damping according to the present invention, on the basis of Embodiment 1, the mass system also includes a mass adjustment mechanism for adjusting the mass of the mass system, which can be increased or decreased by solid Adjust the quality of the quality system in a small range by means of liquid or liquid.

[0061] Specifically, if the mass of the mass system is adjusted by increasing or decreasing liquid, the frequency can be fine-tuned and the frequency can be adjusted more continuously. Such as Figure 6 As shown, the mass adjustment mechanism includes an upper box body 21 and a lower box body 22, the upper box body 21 is located on the top surface of the upper mounting base 2, of course, it can also be located inside the mass block 1, and the lower box body The body 22 is connected to the support 3. If it is arranged in the support 3, it is beneficial to reduce the height of the device. The upp...

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Abstract

The invention discloses a tuned mass damper with variable stiffness, variable mass and variable damping and a design method thereof. The damper comprises a mass system, a support and a damping system; the mass system comprises a mass block; the damper is characterized in that a plurality of guide rods are arranged on the support; the mass system can slide along the guide rods; the damping system is arranged on the support; the guide rods are sleeved with first springs; one end of each first spring is connected with the mass system; the other end of each first spring is connected with the support; a plurality of second springs are further arranged on the support; the second springs are connected with sliding blocks; locking structures are connected between the mass system and the sliding blocks; and the sliding blocks and the mass system can be connected or disconnected by locking or disconnecting the locking structures. By the adoption of the tuned mass damper with the variable stiffness, the variable mass and the variable damping, multi-order vibration of a structure can be controlled, the damper can adapt to natural vibration frequency in a wide range, and corresponding optimal damping can be set according to vibration of a main structure in different states, so that the adaptability and the restraining effect are greatly improved, and the device has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of vibration control, in particular to a tuned mass damper with variable stiffness, variable mass and variable damping and a design method thereof. Background technique [0002] When a structure is externally excited near a certain order of its own natural frequency, it is easy to cause resonance phenomenon, which leads to the destruction of the structure. The tuned mass damper has a good suppression effect on the vibration of the controlled structure with a frequency comparable to its natural frequency, and has been widely used in the field of vibration control of engineering structures. [0003] Existing tuned mass dampers usually can only suppress the vibration of the order that is close to the natural frequency of the structure and the tuned mass damper, but in practical engineering, it is often necessary to control the multi-order vibration of the structure. If you want to adjust the natural frequency ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/021E04H9/0215E04H9/0235
Inventor 王帅陈政清封周权张弘毅牛华伟华旭刚
Owner HUNAN UNIV
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