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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 the problems of requiring external energy input, poor real-time performance and reliability, and complex structure.

Inactive Publication Date: 2013-12-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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

[0055] 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

[0056]

[0057] 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.

[0058] Carry out Laplace transformation on the above formula and arrange it to get

[0059]

[0060] make , can be obtained from the above formula z 2 and z r２ The amplitude ratio of the system displacement transmissibility

[0061]

[0062] 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

A passive skyhook and groundhook damping vibration isolation system and a method for determining parameters thereof, which utilize the anti-resonance of an “inerter (b1, b2)-spring (k1, k2)-mass (m1, m2)” vibration state converting system to convert the resonance of the isolated mass into the resonance of the inerter, thus eliminating the resonance of the isolated mass, is provided. A damper spans and is connected in parallel to the inerter, preventing the damper from spanning and being connected in parallel to the isolated mass. The damper is not required to connect to an inertial reference frame, and the vibration of the isolated mass is suppressed.

Description

technical field [0001] 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 [0002] 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. [0003] For a long time, people have been devoting themselv...

Claims

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Application Information

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