The Analysis of Vibration Characteristics and Motion Stability of the Tracked Ambulance Nonlinear Damping System
Considering the impact of the nonlinear stiffness, a 2 DOF dynamic nonlinear vibration model with cubic terms was established according to the structural feature and nonlinear behavior of the tracked ambulance. In the case of primary resonance and 1: 1 internal resonance, multiple scale method was used to obtain a first-order approximate solution for this model. Taking the parameters of the tracked ambulance for instance, the approximate solution was verified and the influence of the parameters on damping effect was investigated. Finally, the motion stability of the damping system was analyzed with singularity theory and the theoretical bases for improving efficiency of the damping system were provided.
Keywords: Damping System; Cubic Nonlinearity, Multiple Scale Method; Internal Resonance; Stability
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ABOUT THE AUTHORS
Meng Yang
Meng Yang received the bachelor degree from Tianjin University, Tianjin, China, in 2011 and is now a postgraduate student of Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin, China. His research interests cover the nonlinear dynamics and ergonomics.
Xinxi Xu
Xinxi Xu received a master degree from Tianjin University, in 1989 and a Ph.D.degree from Tianjin University in 2008. He is now the research associate and doctoral tutor of Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin, China. His research interests cover the structural dynamics, vehicle NVH technology and ergonomics.
Chen Su
Chen Su received a master degree form Military Transportation University, in Tianjin, China, in 2008 and a Ph.D.degree from Institute of Medical Equipment, Academy of Military Medical Sciences, in 2011. He is now a research assistant of the Institute of Medical Equipment.
Meng Yang
Meng Yang received the bachelor degree from Tianjin University, Tianjin, China, in 2011 and is now a postgraduate student of Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin, China. His research interests cover the nonlinear dynamics and ergonomics.
Xinxi Xu
Xinxi Xu received a master degree from Tianjin University, in 1989 and a Ph.D.degree from Tianjin University in 2008. He is now the research associate and doctoral tutor of Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin, China. His research interests cover the structural dynamics, vehicle NVH technology and ergonomics.
Chen Su
Chen Su received a master degree form Military Transportation University, in Tianjin, China, in 2008 and a Ph.D.degree from Institute of Medical Equipment, Academy of Military Medical Sciences, in 2011. He is now a research assistant of the Institute of Medical Equipment.
