CAJ | 학술논문

轮齿表面剥落的动态响应特征是诊断齿轮早期故障的重要信息。但是，由于轮齿表面剥落部位啮合变形的复杂性和响应信号强耦合，导致诊断齿轮早期故障困难。为了解明轮齿表面剥落部位啮合引起的响应特征机理，建立了基于边缘接触时变刚度的轮齿表面剥落动力学模型，提出了轮齿表面剥落缺陷的时变刚度算法，分析了边缘接触对时变刚度激励及齿轮系统动态响应，研究了齿面剥落齿在啮出剥落边界时的边缘接触力突变及齿轮系统动态响应特性，获得了齿面剥落的时域和频域响应信号。同时，开展了齿面剥落缺陷动态响应特征的实验研究，验证了提出的理论模型的正确性。仿真与台架实验结果表明，新的模型能够准确计算齿面剥落对啮合刚度、动态响应特性的影响，可为齿轮系统状态检测提供重要参考价值。
륜치표면박락적동태향응특정시진단치륜조기고장적중요신식。단시，유우륜치표면박락부위교합변형적복잡성화향응신호강우합，도치진단치륜조기고장곤난。위료해명륜치표면박락부위교합인기적향응특정궤리，건립료기우변연접촉시변강도적륜치표면박락동역학모형，제출료륜치표면박락결함적시변강도산법，분석료변연접촉대시변강도격려급치륜계통동태향응，연구료치면박락치재교출박락변계시적변연접촉력돌변급치륜계통동태향응특성，획득료치면박락적시역화빈역향응신호。동시，개전료치면박락결함동태향응특정적실험연구，험증료제출적이론모형적정학성。방진여태가실험결과표명，신적모형능구준학계산치면박락대교합강도、동태향응특성적영향，가위치륜계통상태검측제공중요삼고개치。
Dynamic response characteristic of gears with tooth surface spalling is an important message to their fault diagnosis.However,the complexity of mesh deformation in tooth surface spalling area and its strong coupling with response signals result in a difficulty to diagnose gear early faults.Here,a dynamic model of gears with tooth surface spalling based on a time-varying stiffness for edge contact was built to explore the response characteristic mechanism in tooth spalling area and the new time-varying meshing stiffness algorithm was also established.The time-varying stiffness excitation and the gear system dynamic response with edge contact were analyzed.The study on the mutation characteristic of edge contact force at tooth surface spalling boundary and the dynamic response characteristic of the gear system was performed with time domain and frequency domain methods.In addition,the experimental investigation on the dynamic response features of the gear system with tooth surface spalling fault was performed to validate the proposed theoretical method.The simulation and experimental results showed that the new model can be used to correctly calculate the effect of tooth surface spalling on the mesh stiffness and the dynamic response features of gear systems,it provides an important reference for condition monitoring of gear systems.