CAJ | 학술논문

文章介绍了功率双分支二级齿轮系统弯扭耦合动力学模型的建立过程，模型考虑了时变啮合刚度、滑动轴承油膜刚度、阻尼、随机轮齿误差和安装偏心误差等因素。通过研究系统固有频率和振型特点，发现系统的振动模式可分为扭转振动模式和横向振动模式两种形式。用傅里叶级数法对系统动力学方程进行了求解，得到了两级齿轮副的动态啮合力历程。考虑随机轮齿误差后，齿轮副在各啮合周期的动载荷会有所差异，更符合齿轮的实际制造情况。齿轮轴的安装偏心误差和两级间连接轴的刚度对系统的振动和均载性能都有较大影响。
문장개소료공솔쌍분지이급치륜계통만뉴우합동역학모형적건립과정，모형고필료시변교합강도、활동축승유막강도、조니、수궤륜치오차화안장편심오차등인소。통과연구계통고유빈솔화진형특점，발현계통적진동모식가분위뉴전진동모식화횡향진동모식량충형식。용부리협급수법대계통동역학방정진행료구해，득도료량급치륜부적동태교합력역정。고필수궤륜치오차후，치륜부재각교합주기적동재하회유소차이，경부합치륜적실제제조정황。치륜축적안장편심오차화량급간련접축적강도대계통적진동화균재성능도유교대영향。
A translational-rotational coupling dynamic model for a dual-branching gearbox with two stages was established. The model considered the factors as the time-varying mesh stiffness, the stiffness of oil film of journal bearings, damping, random tooth errors, assembling eccentric errors, and so on. The vibration modes of the system could be categorized into rotational mode and translational mode by observing the nat-ural frequencies and the characteristics of mode shapes. The dynamic equations were solved using Fourier Series Method and the dynamic mesh forces on the gear pairs of the stages. The results show that the dy-namic mesh forces have a little difference between each mesh cycle as the influence of the random tooth errors, which coincides with the manufacturing fact. The assembling errors of the gear shaft and the stiff-ness of connecting shaft between two stages have both great effect on the vibration and load sharing of the system.