Vibration and noise control of structural systems using squeeze mode ER mounts |
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Authors: | Email author" target="_blank">Weui-Bong?JeongEmail author Wan-Suk?Yoo Woo-Jin?Jung |
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Affiliation: | (1) Pusan National University, 30 Jangjeon-dong, 609-735 Geumjeong-gu, Buson, Korea;(2) Agency for Defense Development, P.O.Box 18, 645-600 Chinhae, Kyungnam, Korea |
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Abstract: | This paper presents vibration and noise control of flexible structures using squeeze mode electro-rheological mounts. After
verifying that the damping force of the ER mount can be controlled by the intensity of the electric fild, two different types
of ER squeeze mounts have been devised. Firstly, a small size ER mount to support 3 kg is manufactured and applied to the
frame structure to control the vibration. An optimal controller which consists of the velocity and the transmitted force feedback
signals is designed and implemented to attenuate both the vibration and the transmitted forces. Secondly, a large size of
ER mount to support 200 kg is devised and applied to the shell structure to reduce the radiated noise. Dynamic modeling and
controller design are undertaken in order to evaluate noise control performance as well as isolation performance of the transmitted
force. The radiated noise from the cylindrical shell is calculated by SYSNOISE using forces which are transmitted to the cylindrical
shell through two-stage mounting system. |
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Keywords: | ER Mount (electrorheological mount) Seueeze Mode Radiated Noise Vibration Control Noise Control Two-stage Mounting System |
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