Nihon Kikai Gakkai ronbunshu (Feb 2020)

Design method of joint stiffness for simultaneous placement of multiple resonance frequencies

  • Yuichi MATSUMURA,
  • Hironori OZAKI,
  • Masashi KOMADA,
  • Kohei FURUYA

DOI
https://doi.org/10.1299/transjsme.19-00290
Journal volume & issue
Vol. 86, no. 883
pp. 19-00290 – 19-00290

Abstract

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It is necessary to separate the multiple resonance frequencies of a vehicle body from outstanding peaks of excitation spectrum to reduce the road induced noise of cars. A vehicle body is always excited by the transmitted forces from a chassis system, and worse the transmitted forces change in real time with road surfaces. Therefore, we suggest that semi-active control of the vibration characteristics of a car body is useful for reducing road induced noise of cars. In this paper, we derived a design method of joint stiffness for simultaneous placement of multiple resonance frequencies. Specifically, we have focused our efforts to make an eigenvalue of a kernel compliance matrix to zero at the assigned natural frequencies by changing the joint stiffness connecting a main system and a subsystem. Consequently, it is enabled to control the multiple resonance frequencies of a whole structure with low computational cost.

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