摘要
在现有研究中,裂纹-断齿复合故障的研究往往忽略了故障自身劣化过程对系统特性的影响。对此,基于势能法并考虑齿间耦合作用建立裂纹-断齿耦合故障齿轮啮合刚度计算模型,求解含劣化过程的齿轮时变啮合刚度,并建立啮合型弯扭耦合动力学模型,研究复合故障下齿轮系统的动态响应。通过实验验证了该方法的有效性。结果表明,裂纹和断齿均会降低齿轮的啮合刚度,断齿故障导致刚度发生突变,而裂纹故障下刚度变化相对平稳,耦合故障下系统刚度由更为严重的故障主导,随着故障程度的不断加深,刚度下降愈发明显。通过分析劣化过程中周期性冲击成分与边频带的演变模式,阐明了裂纹与断齿故障之间耦合现象的动态演化趋势。
In existing research on crack-tooth breakage composite faults,the impact of the fault′s own degradation process on system characteristics is often overlooked.To address this,a crack-tooth breakage coupled fault gear mesh stiffness calculation model is established based on the potential energy method,incorporating the coupling effect between teeth.This model enables the calculation of time-varying mesh stiffness in gears with degradation processes.Subsequently,a meshing-type bending-torsion coupling dynamic model is developed to investigate the dynamic response of the gear system under composite fault conditions.Experimental results confirm the effectiveness of this method.The findings indicate that both cracks and tooth breakage reduce the gear mesh stiffness,with tooth breakage causing a sudden change in stiffness,while cracks lead to relatively smooth stiffness variations.In cases of coupled faults,system stiffness is primarily governed by the more severe fault.As fault severity deepens,the stiffness decline becomes more pronounced.By analyzing the evolution patterns of periodic impact components and sidebands during the degradation process,the study elucidates the dynamic evolution trend of the coupling phenomena between crack and tooth breakage faults.
作者
白宇
姜宏
章翔峰
雷震
BAI Yu;JIANG Hong;ZHANG Xiangfeng;LEI Zhen(School of Mechanical Engineering,Xinjiang University,Urumqi 830047,China)
出处
《组合机床与自动化加工技术》
北大核心
2025年第9期44-49,共6页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金资助项目(52265016)。
关键词
齿轮箱
复合故障
时变啮合刚度
动态特性
劣化
gear box
compound fault
time-varying meshing stiffness
dynamic characteristics
deterioration
