有限元法
扭矩
频率响应
谐波
固有频率
控制理论(社会学)
先验与后验
接触力学
接触力
机械
瞬态响应
正常模式
激发
物理
代表(政治)
工程类
经典力学
振动
结构工程
声学
计算机科学
控制(管理)
政治
法学
人工智能
哲学
电气工程
认识论
热力学
量子力学
政治学
作者
Robert G. Parker,Vinayak Agashe,Sandeep Vijayakar
出处
期刊:Journal of Mechanical Design
日期:1999-05-01
卷期号:122 (3): 304-310
被引量:240
摘要
The dynamic response of a helicopter planetary gear system is examined over a wide range of operating speeds and torques. The analysis tool is a unique, semianalytical finite element formulation that admits precise representation of the tooth geometry and contact forces that are crucial in gear dynamics. Importantly, no a priori specification of static transmission error excitation or mesh frequency variation is required; the dynamic contact forces are evaluated internally at each time step. The calculated response shows classical resonances when a harmonic of mesh frequency coincides with a natural frequency. However, peculiar behavior occurs where resonances expected to be excited at a given speed are absent. This absence of particular modes is explained by analytical relationships that depend on the planetary configuration and mesh frequency harmonic. The torque sensitivity of the dynamic response is examined and compared to static analyses. Rotational mode response is shown to be more sensitive to input torque than translational mode response. [S1050-0472(00)00403-7]
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