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A Realization Method and Vibration Absorber Based on Hardened Cubic Stiffness

A cubic rigidity and realization method technology, applied in the direction of transmission, belt/chain/gear, inertial force compensation, etc., to achieve the effects of saving space, high reliability, and easy measurement

Inactive Publication Date: 2019-09-06
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems existing in current nonlinear cubic stiffness shock absorbers, the present invention proposes a method for realizing a hardened cubic stiffness dynamic shock absorber and the shock absorber

Method used

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  • A Realization Method and Vibration Absorber Based on Hardened Cubic Stiffness
  • A Realization Method and Vibration Absorber Based on Hardened Cubic Stiffness
  • A Realization Method and Vibration Absorber Based on Hardened Cubic Stiffness

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1 As shown, the main structure of the present invention is a sinusoidal mechanism, including a support 1, a rocking bar 2, a roller 3, a slider 4, a sliding guide rail 5, an elastic element 6 and a spring support 7; the rocking bar 2 is an input end, and the The bracket 1 rotates, the rocker 2 drives the slider 4 to move linearly through the roller 3 , and the slider 4 is connected with the spring support 7 through the elastic element 6 . The slider 4 is restricted by the sliding track 5 to move in a straight line parallel to it. There is an inner track perpendicular to the movement direction inside the slider 4. The sliding track 5 and the rotation center of the rocker 2 are on a straight line. When the rocker 2 swings at a certain angle θ , the roller 3 at the end of the rocker will push the slider through the inner track of the slider 4 to make a linea...

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Abstract

The invention discloses an implementing method based on a hardened cubic rigidity shock absorber and the shock absorber. According to a nonlinear energy sink (NES) principle, a vibration attenuation structure with a strong nonlinear cubic rigidity is provided, and main structure vibration energy can be rapidly gathered in NES oscillators in a targeted energy transmission manner and dissipated in the NES oscillators through damping. Based on a sine mechanism, in cooperation with a spiral orbit variable-rocker-length device, a ball screw device and a gear and rack device, the restoring force ofthe oscillators meets the design requirement that the displacement cubic rigidity F is equal to KX3. Hereby a shock absorber living example is given, and it is possible to finally achieve targeted transmission of vibration energy of the shock absorber. The implementing method based on the hardened cubic rigidity shock absorber and the shock absorber have the beneficial effects that 1, the method is simple and high in precision; 2, the structure is compact and reliable; and 3, theoretical analysis is promoted.

Description

technical field [0001] The invention relates to a vibration control technology of an engineering structure, specifically a dynamic vibration absorber with hardened cubic stiffness. Background technique [0002] Vibration reduction by linear absorber technology is one of the most commonly used methods for passive control of structures. When the frequency of the vibrator is adjusted to be close to the frequency of the main structure, energy can be consumed through the anti-phase vibration of the mass block. However, the applicable frequency band of the traditional linear vibration absorber is narrow, and the vibration suppression performance is better only at the natural frequency of the vibration absorber. [0003] Some scholars proposed a new type of nonlinear vibration-absorbing vibrator and named it "nonlinear energy sink" (NES). This kind of vibrator contains hardened cubic nonlinear stiffness. Hardening means that the spring stiffness is large and nonlinear, while cubi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/22F16H37/12
Inventor 史啸天李鹤
Owner NORTHEASTERN UNIV LIAONING
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