RESEARCH ON VIBRATION BAND GAPS AND CHARACTERISTIC OF VIBRATION ISOLATION OF PERIODIC MASS-SPRING STRUCTURE

Abstract

Abstract: By analyzing the vibration band structure of infinite periodic mass-spring structure, it is discovered that the structure have vibration band gaps which are similar with elastic band structure of phononic crystals, and the vibration of such frequencies within band gaps can not be transmitted. Numerical calculation method is applied to calculate the frequency response curve of finite periodic structure. The influences of periodicity of mass-spring, material damping and the characteristics of vibration isolation are discussed by using numerical calculation method. Those conclusions come from numerical calculation are examined by vibration experiment of two mass periodic mass-spring structures, which results in reasonable agreements.

Key words: Elastic band gap, Phononic crystals, Vibration band gap, Vibration isolation

CLC Number:

O321 TH113 O48

Wen Jihong　Wang Gang;Liu Yaozong Zhao Honggang. RESEARCH ON VIBRATION BAND GAPS AND CHARACTERISTIC OF VIBRATION ISOLATION OF PERIODIC MASS-SPRING STRUCTURE[J]. , 2005, 41(2): 205-209.

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RESEARCH ON VIBRATION BAND GAPS AND CHARACTERISTIC OF VIBRATION ISOLATION OF PERIODIC MASS-SPRING STRUCTURE

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