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A torsional vibration absorber unit and absorber based on bistable origami

A technology of torsional vibration and vibration absorber, which is applied in the direction of inertial force compensation, etc., can solve the problems of working frequency difference, torsional vibration insensitivity, dynamic vibration absorber unit cannot be switched, etc., and achieve the effect of simple structure and suppression of torsional vibration

Active Publication Date: 2022-04-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing vibration absorber unit usually has a relatively obvious suppression effect on bending vibration or longitudinal vibration, but the absorption effect on torsional vibration is not obvious, because the vibration absorber unit is not sensitive to torsional vibration
On the other hand, due to the complex working conditions in engineering practice, the corresponding working frequency of the structure will be different under different working conditions, and the traditional dynamic vibration absorber unit cannot switch the frequency that needs to be suppressed according to the actual situation, so there are certain limitations

Method used

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  • A torsional vibration absorber unit and absorber based on bistable origami
  • A torsional vibration absorber unit and absorber based on bistable origami
  • A torsional vibration absorber unit and absorber based on bistable origami

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Embodiment Construction

[0024] Note that the application examples described here are only some implementation cases of the present invention, not all implementation cases.

[0025] The structure of the torsional vibration absorber unit of this embodiment is as follows figure 1 As shown, it includes a bistable Kresling vibrator 1 (in this embodiment, its material is origami, and its top and bottom surfaces are regular hexagonal structures, i.e. n=6), two mass blocks 2 (in this embodiment, The quality block is a sphere, and the material is a steel ball). Two steel balls are fixed on two opposite vertices on the top surface of the Kresling vibrator, and are asymmetrical about any axis of symmetry of the regular hexagon on the bottom surface of the Kresling vibrator; the position of the steel balls can be changed with the compression of the Kresling origami, thereby regulating the torsional wave Bandgap. At the same time, due to the asymmetric arrangement of the masses, a wider and lower-frequency tors...

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Abstract

The invention discloses a torsional vibration absorber unit and the absorber based on bistable origami. The vibration absorber is composed of a plurality of torsional vibration vibration absorber units arranged periodically, and the vibration absorber unit includes a Kresling vibrator and two asymmetrically arranged mass blocks, and the mass blocks are asymmetrically arranged on the top surface of the Kresling vibrator; The upper and lower bases of the Kresling oscillator are regular n polygons, where n is an even number, and the height of the Kresling oscillator is greater than the radius of the circumscribed circle of the regular n polygon, and the Kresling oscillator has a bistable state. The structure of the present invention is simple, and can switch between two stable states according to the actual situation, thereby adjusting the vibration frequency to be suppressed. Moreover, due to the asymmetric arrangement of the structure of the present invention, the vibrator is sensitive to torsional vibration, which can produce obvious Torsional vibration suppression effect.

Description

technical field [0001] The invention belongs to the field of torsional vibration absorbers, in particular to a torsional vibration absorber unit and a vibration absorber based on bistable origami. Background technique [0002] Mechanical vibration widely exists in various fields such as aerospace, machinery manufacturing, and civil engineering. Mechanical vibration will significantly reduce the reliability of the structure and reduce the life of the structure. Therefore, vibration control is a very important topic in the field of engineering technology. Due to the existence of various eccentric excitations in engineering, torsional vibration is inevitable. [0003] The existing vibration absorber unit usually has a relatively obvious suppression effect on bending vibration or longitudinal vibration, but not obvious absorption effect on torsional vibration, because the vibration absorber unit is not sensitive to torsional vibration. On the other hand, due to the complex work...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/22
CPCF16F15/22
Inventor 庄国志许著龙王瑜琪
Owner ZHEJIANG UNIV
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