A Nonlinear Vibration Damping Device Coupled with Segmental Stiffness

A vibration damping device, nonlinear technology, applied in the direction of shock absorber, spring/shock absorber functional characteristics, shock absorber, etc., can solve the problem that broadband vibration reduction cannot be realized, achieve good vibration suppression effect, and low processing cost , a wide range of effects

Active Publication Date: 2021-10-08
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mass tuned damping (TMD) is a widely used passive vibration damping device due to its simple structure. However, it can only effectively suppress the vibration of the main structure in a narrow frequency range, and cannot achieve broadband vibration reduction.

Method used

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  • A Nonlinear Vibration Damping Device Coupled with Segmental Stiffness
  • A Nonlinear Vibration Damping Device Coupled with Segmental Stiffness
  • A Nonlinear Vibration Damping Device Coupled with Segmental Stiffness

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Embodiment Construction

[0016] The specific embodiments of the present invention will be further described in detail and completely below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, a nonlinear damping device coupled with segmental stiffness includes a fixed frame 1, a nonlinear damping device 2, and a segmented spring device 3; On the bottom plate 11, two fixing bolts 14 are assembled on the left and right sides of the bottom plate 11, and two guide rods 15 are fixed on the front fender 12 and the rear fender 13 through nuts 16; The two ends of the linear springs 21 on both sides are respectively connected with the fixed bolts 14 and the fixed pins 22 fixed on both sides of the mass block 23, the guide rod 15 runs through the mass block 23, and the mass block 23 can slide on the guide rod 15; The segmented spring device 3 is arranged front and rear, and is installed on the front fender 12 and the rear fender 13 .

[0018] The front baffle plate 12 in the fixe...

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PUM

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Abstract

The invention discloses a nonlinear damping device coupled with segmental stiffness, which comprises a fixed frame, a nonlinear damping device, and a segmented spring device. And guide rods, the nonlinear vibration damping device is composed of linear springs on the left and right sides and connected mass blocks, and the segmented spring device is composed of threaded screw rods, springs and top sheets. The invention not only has a wider damping frequency band, but also has better damping effect, simple structure, easy realization and wide application prospect.

Description

technical field [0001] The invention relates to the technical field of passive vibration control, in particular to a nonlinear damping device coupled with segmental stiffness. Background technique [0002] In life, vibration widely exists around us. Especially in engineering, if the vibration is not controlled, it is likely to cause major problems and lead to disastrous consequences. In order to reduce the damage to structures caused by vibration, many vibration suppression techniques have been studied. Mass-tuned damping (TMD) is widely used as a passive vibration reduction device due to its simple structure. However, it can only effectively suppress the vibration of the main structure in a narrow frequency range, and cannot achieve broadband vibration reduction. Therefore, nonlinear energy wells are proposed to overcome the problem of narrow TMD vibration absorption frequency to achieve broadband vibration reduction, and nonlinear energy wells can achieve targeted transf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F7/104F16F7/108
CPCF16F7/104F16F7/108F16F2228/066
Inventor 丁虎耿晓锋陈立群
Owner SHANGHAI UNIV
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