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

Yuichi MATSUMURA, Hironori OZAKI, Masashi KOMADA, Kohei FURUYA
2020 Transactions of the JSME (in Japanese)  
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
more » ... er, 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.
doi:10.1299/transjsme.19-00290 fatcat:w5a5sc52uvezpjie4vt3zvwy4y