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A tuned mass damper with variable stiffness, variable mass and variable damping and its design method

A tuned mass damping and design method technology, applied in the field of tuned mass dampers with variable stiffness, variable mass and variable damping, can solve the problems of poor adaptability and difficult adjustment, and achieve high frequency adjustment accuracy, high stability and reliability, The effect of improving adaptability

Active Publication Date: 2022-06-21
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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  • A tuned mass damper with variable stiffness, variable mass and variable damping and its design method
  • A tuned mass damper with variable stiffness, variable mass and variable damping and its design method
  • A tuned mass damper with variable stiffness, variable mass and variable damping and its design method

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Embodiment 1

[0051] like 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 is characterized in that the support 3 is provided with a number of guide rods 6, the mass system can slide along the guide rod 6, the guide rod 6 is sleeved with a first spring 4, one end of the first spring 4 is connected to the mass system, 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] The support 3 is also provided with a number of second springs 7, the second springs 7 are connected with a slider 71, and a locking structure is connected between the mass system and the slider 71. The locking structure enables the sliding block 71 to be connected or disconnected from the ...

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 further includes a mass adjustment mechanism for adjusting the mass of the mass system. or liquid to make small adjustments to the mass of the mass system.

[0061] Specifically, if the mass of the mass system is adjusted by increasing or decreasing the liquid, the frequency can be fine-tuned, and the adjustment of the frequency can be made more continuous. like Image 6 As shown, the mass adjustment mechanism includes an upper box 21 and a lower box 22, the upper box 21 is located on the top surface of the upper mounting seat 2, and of course can also be located inside the mass 1, the lower box 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 box bodies 22 are communicated through the pipe body 23, such as Figure 7-9 As ...

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Abstract

The invention discloses a tuned mass damper with variable stiffness, mass and variable damping and a design method thereof. The damper includes a mass system, a support and a damping system, and the mass system includes a mass block. It is characterized in that the support There are a number of guide rods on it, the mass system can slide along the guide rods, the first spring is sleeved on the guide rods, one end of the first spring is connected to the mass system, and the other end is connected to the support ; The support is also provided with several second springs, the second springs are connected with a slider, and a locking structure is connected between the mass system and the slider, by locking or disconnecting the locking structure The slider can be connected or disconnected from the mass system. Using this device can not only control the multi-order vibration of the structure, but also adapt to a wide range of natural vibration frequencies, and can also set the corresponding optimal damping according to the vibration of the main structure in different states, greatly improving the adaptability and suppression effect, and has a wide range of applications. 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 excited by an external excitation close to a certain order natural frequency of itself, it is easy to cause resonance phenomenon, which leads to the damage of the structure. The tuned mass damper has a good suppression effect on the vibration of the controlled structure with a frequency equivalent to its natural frequency, and has been widely used in the field of engineering structure vibration control. [0003] Existing tuned mass dampers usually can only suppress the vibration of the first order of the structure and the natural vibration frequency of 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...

Claims

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Application Information

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Patent Type & Authority Patents(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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