Investigation on the dynamic characteristic of a vehicle-seat-human coupled model&nbsp; with quasi-zero-stiffness isolator

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (15) : 190-196.

Investigation on the dynamic characteristic of a vehicle-seat-human coupled model with quasi-zero-stiffness isolator

WANG Yong, LI Shun-ming, CHENG Chun

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Abstract

The dilemma of lowering natural frequency and increasing load bearing capacity that exists in linear passive isolator can be overcame by quasi-zero-stiffness isolator, the quasi-zero-stiffness isolator is used for vehicle seat isolation, a car-seat-human coupled model of eight degrees-of-freedom that considers the quasi-zero-stiffness isolator is established, the dynamic characteristic of this coupled dynamic model under road shock excitation and random excitation is analyzed by using numerical method. The results show that when using quasi-zero-stiffness isolator as seat suspension, the vehicle ride comfort improves effectively, the vehicle suspension stroke and seat stroke remain in the allowed stroke range. The research gives theoretical guiding significance for designing quasi-zero-stiffness isolator as seat suspension.

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quasi-zero-stiffness / nonlinear isolator / vehicle-seat-human coupled model / dynamic characteristic

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WANG Yong, LI Shun-ming, CHENG Chun. Investigation on the dynamic characteristic of a vehicle-seat-human coupled model with quasi-zero-stiffness isolator[J]. Journal of Vibration and Shock, 2016, 35(15): 190-196

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