Multi-frequency dynamic vibration adsorption method and multi-frequency power dynamic vibration absorber
A dynamic vibration absorber and dynamic vibration absorption technology, applied in the direction of shock absorbers, inertial effect shock absorbers, shock absorbers, etc., can solve the problems of complexity, vibration absorber weight, large volume, affecting vibration absorption frequency, etc., and achieve vibration absorption frequency Small impact, simple and stable structure, and the effect of reducing weight and volume
Active Publication Date: 2020-08-18
ZHUZHOU TIMES NEW MATERIALS TECH
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Problems solved by technology
When the controlled object has more discrete natural vibration frequencies, it is necessary to install more mobile vibration units to absorb each discrete natural vibration frequency, so the weight and volume of the entire vibration absorber will be too large
In addition, the relevant structural components of the moving mass block are all movable connections, and the number of components is especially small and complex. The movable gap between the components will affect the matching between the vibration absorption frequency and the natural vibration frequency of the controlled object, and ultimately affect the vibration absorption effect.
Method used
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[0035] In order for those skilled in the art to fully implement the content of the present invention, the content of the present invention will be further described below in conjunction with the drawings and specific embodiments.
[0036] A multi-frequency dynamic vibration absorption method, comprising the following steps, providing a a fixed elements and at least one with stiffness K b The vibration-absorbing unit, where K a >K b . In this example, the stiffness K a and stiffness K b are the equivalent stiffnesses of the fixed unit and the vibration-absorbing unit respectively, when K a >K b When the controlled object is vibrating, the fixed unit is slightly affected by it, and the vibration frequency of the controlled object is almost equivalently transmitted to the vibration-absorbing unit.
[0037] The vibration-absorbing unit is rigidly connected to the fixed unit, and then the fixed unit is fixedly connected to the controlled object. In this embodiment, the cont...
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The invention discloses a multi-frequency dynamic vibration absorption method and a multi-frequency dynamic vibration absorber. Vibration modes of dynamic vibration absorption units are increased by connecting a connecting part and a mass block in a spatial angle mode, so that the distribution number of the vibration absorption units on fixed units is reduced, and the structure is simplified through rigid connection among the connecting parts, the mass blocks and the fixed units; the stability of the whole structure is improved, and the influence of frequency matching errors caused by gaps between components can be reduced. According to the multi-frequency dynamic vibration absorption method and the multi-frequency dynamic vibration absorber, the structure is simple, the stability is good,and the influences of multiple discrete vibration inherent frequencies of a controlled object can be effectively eliminated.
Description
technical field [0001] The invention relates to the field of engineering vibration control, in particular to a multi-frequency dynamic vibration absorbing method and a multi-frequency dynamic vibration absorber. Background technique [0002] In the field of engineering vibration control, using a dynamic vibration absorber to reduce vibration is one of the commonly used methods. The dynamic vibration absorber is composed of auxiliary mass, spring and damping. It adjusts the natural frequency of its vibration to the vicinity of the resonance frequency of the main structure, changes the resonance characteristics of the main structure, and thus achieves the effect of reducing the vibration of the main structure. Due to the advantages of simple structure, convenient construction and maintenance, good vibration reduction effect and low cost, dynamic vibration absorbers have been widely used in construction, bridges, ships, automobiles, machining and other fields. Line spectrum vi...
Claims
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IPC IPC(8): F16F7/10F16F7/108F16F7/104
CPCF16F7/1022F16F7/108F16F7/104
Inventor 涂奉臣贺才春胡小刚肖光辉
Owner ZHUZHOU TIMES NEW MATERIALS TECH