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Passive vibration isolation system for dampers of ceilings and sheds

A vibration isolation system and ceiling technology, applied in the field of vibration reduction and vibration isolation, can solve problems such as poor real-time performance and reliability, need for external energy input, and must be connected to the inertial reference system, etc.

Inactive Publication Date: 2012-06-13
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The technical problem to be solved by the present invention is: to overcome the technical shortcomings of active and semi-active implementation methods requiring external energy input, complex structure, poor real-time performance and reliability, and to solve the problem that the damper must be connected to the inertial reference system to solve the ideal ceiling and floor damping requirements Technical problem, to provide a passive ceiling and floor damping vibration isolation system, which does not require the damper to be connected to the inertial reference system and can maximize the ideal ceiling and floor damping function, and suppress the vibration of the isolated mass

Method used

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  • Passive vibration isolation system for dampers of ceilings and sheds
  • Passive vibration isolation system for dampers of ceilings and sheds
  • Passive vibration isolation system for dampers of ceilings and sheds

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Embodiment Construction

[0056] Such as image 3 ,quality m 2 The vibration state converter 45 consists of a spring k 2 2 with inerter b 2 3 connected in parallel to form a mass m 2 Vibration state converters 45 are connected in series and support mass m 2 1 makes up the mass m 2 Vibration state transition system 46, which is a simple system whose motion can be described by second order differential equation

[0057]

[0058] in, z 2 is quality m 2 displacement of 1, is the displacement input of the system, k 2 and b 2 spring respectively k 2 2 Stiffness and Inerter b 2 3 inertia coefficient.

[0059] Carry out Laplace transformation on the above formula and arrange it to get

[0060]

[0061] make , can be obtained from the above formula z 2 and z r２ The amplitude ratio of the system displacement transmissibility

[0062]

[0063] when When , the system will have anti-resonance phenomenon, and the anti-resonance frequency , at this time, the mass m ...

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Abstract

The invention provides a passive vibration isolation system for dampers of ceilings and sheds and a parameter determination method thereof. By the aid of antiresonance of an 'inertial container-spring-weight' vibrating state converting system, resonance of isolated weights is converted into resonance of inertial containers, resonance of the isolated weights is eliminated, on that basis, damper stride across the inertial containers to be connected with the isolated weights in parallel, and are prevented from striding across the isolated weights to be connected with the initial containers, and the technical problem that dampers of perfect ceilings and perfect sheds need to be connected with inertial reference frames is resolved. In the passive vibration isolation system and the parameter determination method, the dampers do not need to be connected with inertial reference frames, functions of the perfect ceilings and the perfect sheds can be realized to the greatest extent, vibration of the isolated weights is restrained, and technical shortcomings that in an active or semi-active implementation method, external energy input is required, the structure is complex, and instantaneity and reliability are poor are overcome.

Description

[0001] technical field [0002] The invention relates to the technical field of vibration reduction and vibration isolation, in particular to a passive ceiling and ground ceiling damping vibration isolation system. Background technique [0003] Vibration isolation is a classic problem in mechanical engineering. Vibration isolation systems are required for many machines, common examples include automobiles, trains, heavy machinery, aircraft landing gear, space landing vehicles, and many more. The purpose of vibration isolation is to reduce the transmission of external disturbances to sensitive parts of the system. The suspension composed of springs and damping elements can reduce the response of sensitive parts of the system to external disturbances, thereby achieving the purpose of vibration isolation. Vibration isolation systems are commonly used to attenuate vibration and shock as well as continuous harmonic excitation. [0004] For a long time, people have been devoting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/10F16F15/02B60G13/00B60N2/50B62D33/10
CPCB60G15/02B60G13/18B60G15/06B62D33/0604F16F13/00F16F15/02B60G13/00B60G15/04B60N2/50F16F7/10F16F15/022B60G15/067
Inventor 陈龙张孝良聂佳梅江浩斌汪若尘
Owner JIANGSU UNIV
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