摘要
采用Raccati传递矩阵和Newmark β法相结合的瞬态传递矩阵法分析碰摩故障转子系统的瞬态和稳态响应,用多次迭代的方法确定瞬时碰摩力的精确值·该方法能够分析多盘、多跨转子系统等复杂的非线性转子系统的碰摩故障,并且可以同时考虑陀螺力矩、非线性油膜力等多种因素的影响·最后利用本方法分析了一个含有非线性碰摩刚度的局部碰摩故障双跨转子系统的运动,发现了其中的拟周期、混沌等丰富的非线性现象,验证了本方法的可行性·
The Raccati transfer matrix method and Newmark-β method are combined together to analyze the transient and steady responses from rotor systems with rub-impact fault. Then used multi-iteration method to obtain the accurate value of transient rub-impacting force. The transient transfer matrix method proposed as above is available to complicated rotor system with rub-impact fault, such as a rotor system involving multi-disk, multi-step, or others, with such factors taken into account, as gyroscopic moment and nonlinear oil-force. At last, a two-step rotor system with partial rub-impact fault pertaining to nonlinear stiffness is analyzed using the method, by which a lot of nonlinearities are found, and the feasibility of the method is therefore verified.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第1期62-65,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(50275024).
