Nonlinear analysis for helicopter ground resonance using multiscale method
The limit cycle behavior of a helicopter nonlinear ground resonance has been analyzed using the multiscale method. The 2-D dynamic model is used in this analysis. Damping nonlinearities in the blade damper are considered. The equations of motion of a helicopter rotor/fuselage coupled system are derived using Lagranges equations. With the multiscale method, the coupled nonlinear equations of motion is solved easily. The frequency and amplitude of the limit cycle oscillation are calculated. Results show mat the limit cycle oscillations occur under some special conditions with nonlinear blade damping. This phenomenon can not be understood using the linear theory.
Wei-long Yin Jin-wu Xiang
School of Aeronautical Science and Engineering, Beihang University, Beijing 100083, China
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
1410-1414
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）