Analysis of the Effects of Nonlinear Characteristics of Lag Dampers on Helicopter Ground Resonance
The nonlinear effects of two kinds of dampers on helicopter ground resonance have been analyzed,which are a hydraulic damper with the filling-oil device and a magneto-rheologicai damper.A simplified two dimensional model is employed.The dimensionless form of the differential equations of motion is obtained using Lagranges approach and introducing new variables.The time domain analysis method is applied to obtain responses of rotor lead-lag and fuselage motions.The comparison data of systems with different dampers are calculated.Results show that the limit cycle amplitude increases with increasing the free-play of the filling oil valve and the system stability is enhanced when the voltage value increases.
N.ZHUANG J.XIANG Y.REN
School of Aeronautic Science and Engineering,Beihang University, Xueyuan Rd.37, Haidian Dist, Beijing 100191, China
国际会议
Sixth International Conference on Nonlinear Mechanics(第六届国际非线性力学会议)(ICNM-VI)
上海
英文
282-285
2013-08-01（万方平台首次上网日期，不代表论文的发表时间）