摘要
假设前起落架支柱上端固支,并且给出了用以描述六自由度的前轮摆振运动的非线性微分方程组,使用谐波平衡法研究了考虑支柱弹性影响,具有库仑摩擦及非线性阻尼的前轮摆振系统的稳定性问题。采用优化特征值实部的方法,确定了非线性摆振系统的极限环以及临界参数曲线。结果表明,起落架结构的非线性项对前轮摆振稳定区域有着重要的影响。
This paper assumes that the top of nose wheel strut is fixed and gives the complete nonlinear equations used to describe the shimmy system with six degrees of freedom. The harmonic equilibrium method are used to study of stability of the nose wheel shimmy system with considering the effect of strut stiffness and coulomb friction as well as the nonlinear damping. The amplitude of limit cycle and the critical parameter curves are determined by optimizing the real part of complex eigenvalues. It is shown that the influence of nonlinear terms in the landing gear structural on the shimmy stability region is significant.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2004年第5期644-646,共3页
Journal of Liaoning Technical University (Natural Science)
基金
黑龙江省自然科学基金资助项目(A01-10)
关键词
非线性振动
稳定性
起落架
摆振
nonlinear vibration
stability
landing gear
shimmy
