Additional damping type nonlinear gas spring

A technology of additional damping and gas springs, applied in protective buildings/shelters, building components, shockproof, etc., can solve the problems that gas springs do not have additional damping properties, and it is difficult to meet the requirements for the use of tuned mass dampers. Control effect, good social and economic benefits, and the effect of reducing maintenance costs

Pending Publication Date: 2021-06-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, gas springs often do not have additional damping properties, and it is difficult to meet the requirements for the use of tuned mass dampers

Method used

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  • Additional damping type nonlinear gas spring
  • Additional damping type nonlinear gas spring
  • Additional damping type nonlinear gas spring

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Experimental program
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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] The additional damping nonlinear gas spring 1 of the present invention has an integrated mechanism of stiffness and damping, and is structured as a concentric cylinder, such as Figure 1-3 , the middle cylinder cavity 1-1 is the gas spring, 1-2 is the piston and piston rod of the gas spring, the ring cavity 1-3 is the damping cavity, 1-4 is the piston and piston rod of the damping cavity, 1-5 at the end of the piston rod is a sleeve connector.

[0029] refer to figure 2 , a nonlinear gas spring tuned mass damper with additional damping nonlinear gas spring, including gas spring 1, mass block 2, slide rail 3, middle support 4 and edge support 5. The mass block 2 is constructed of I-shaped steel, which is milled as a whole. The middle web has holes and is connected to the gas spring 1. The lower flange plate has bolt holes to connect ...

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Abstract

The invention discloses an additional damping type nonlinear gas spring used for tuning mass damping. The nonlinear gas spring comprises a gas spring cavity and a damping cavity; a piston and a piston rod are arranged in the gas spring cavity and the damping cavity correspondingly, and the gas spring cavity and the damping cavity are connected with a damping sliding mass block through the piston rod; and the piston in the damping cavity is provided with a hole. The gas spring can achieve the function of integrating rigidity and damping, configuration of a TMD is simplified, the later system maintenance cost is greatly reduced, the vibration reduction frequency band of the gas spring is wide, the work stroke is shorter, the advantages are remarkable, and the defect of space limitation of a traditional TMD can be overcome.

Description

technical field [0001] The invention belongs to the field of vibration control of civil engineering, in particular to an additional damping nonlinear gas spring. Background technique [0002] As a mature quantitative design method, tuned mass damper (Tuned Mass Damper, TMD) is widely used in practical engineering structure vibration reduction. However, the traditional tuned mass damping technology has its own shortcomings, mainly reflected in the narrow vibration damping frequency band and large working stroke, which also greatly limits the practical engineering application. Therefore, relevant scholars have introduced the nonlinear mechanism into the traditional TMD to overcome its inherent defects, such as SMA-TMD, Pounding-TMD, etc., and these dampers all show good vibration reduction performance. It can be seen that introducing a nonlinear mechanism into the linear TMD system can effectively improve the control performance of the damping system with good reliability. ...

Claims

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Application Information

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IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/021
Inventor 鲁正荣坤杰朱冰
Owner TONGJI UNIV
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