| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid-sealed bush capable of reducing a high frequency road noise to be transmitted from a road surface via a suspension arm. SOLUTION: Frequency where a dynamic spring constant K* of this liquid- sealed bush becomes minimized, or another frequency, where a loss factor tanδbecomes maximized, should be set in and around the rigid resonance frequency f0 of a suspension arm (for example, 600 Hz). Consequently, transfer force N (transfer force N = resonant multiplying factorγ×dynamic spring constant K*) of vibration in and around the said rigid resonance frequency to be transmitted from a road surface via the suspension arm is reduced, whereby a road noise is reducible. |
