摘要
考虑行星轮系内部非惯性系和机体时变位姿外部非惯性系的综合影响,建立了非惯性系下行星齿轮传动系统动力学模型;结合修正Heywood公式与Hertz公式构建了基础运动非惯性系下行星齿轮传动系统齿根弯曲动应力和接触动应力计算模型,定义了描述基础运动下附加效应对动应力影响的应力非惯性系系数;研究了变速平飞、滚转运动和筋斗运动等3种典型机动条件下应力非惯性系系数变化规律。结果表明,应力非惯性系系数与基础运动形式及运动参数紧密相关,总体上应力非惯性系系数随机体机动性增加呈非线性增大趋势,高机动条件下基础运动影响不可忽略。
Considering the comprehensive influence of the internal non-inertial system of the planetary gear system and the external non-inertial system of the body’s time-varying attitude,a dynamics model of the planetary gear transmission system under the non-inertial system is established.Combining the modified Heywood formula and Hertz formula,a calculation model of the tooth root bending dynamic stress and contact dynamic stress of the planetary gear transmission system under the basic motion non-inertial system is constructed,and the stress non-inertial system coefficients describing the influence of the additional effects on the dynamic stress under the basic motion are defined.The variation law of the stress non-inertial system coefficients under three typical maneuvering conditions such as variable speed level flight,roll motion and somersault motion is studied.The results show that the stress non-inertial system coefficients are closely related to the basic motion form and motion parameters.Generally,the stress non-inertial system coefficients increase in a non-linear increase in the mobility of random bodies,and the influence of the basic motion cannot be ignored under high maneuvering conditions.
作者
张爱强
于广滨
曹苗飞
魏静
Zhang Aiqiang;Yu Guangbin;Cao Miaofei;Wei Jing(State Key Laboratory of Mechanical Transmissions,Chongqing University,Chongqing 400044,China;School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150006,China)
出处
《机械传动》
北大核心
2022年第3期1-9,共9页
Journal of Mechanical Transmission
基金
国家重点研发计划(课题)(2020YFB2008101)
国家自然科学基金(51775058/52105051)
中国博士后科学基金面上资助(2021M700585)。
关键词
行星齿轮传动
基础运动
动应力
非惯性系系数
Planetary gear transmission
Basic motion
Dynamic stress
Non-inertial system coefficient
