华中科技大学学报（自然科学版）2023，Vol.51Issue(12)：66-72,7.DOI:10.13245/j.hust.239084
考虑齿根裂纹的传动系统动力学特性研究
Research on dynamic characteristics of transmission system considering tooth root crack
摘要
Abstract
The energy method was used to study the influence of crack depth along tooth thickness,crack inclination angle and propagation length along tooth width on time-varying meshing stiffness,load distribution and transmission error of gear.A cylindrical gear translation-torsion dynamics model was established by the centralized parameter method to simulate the dynamic response of different types of cracks in the gear system,and time-frequency analysis was used to study the dynamics of the gear transmission system under the cracked state.The results show that with the increase of crack depth along tooth thickness,length along tooth width and crack inclination angle,the time-varying meshing stiffness of the gear decreases,the transmission error increases,and the load distribution of gear is affected.Taking the time-varying meshing stiffness as the dynamic excitation of the gear system,it is found that the dynamic response of the vibration displacement of the driving gear in the y-axis direction increases and shows a periodic change consistent with the time-varying meshing stiffness under the fault.Crack failures in gear trains can be effectively diagnosed using statistical indicators such as root mean square and crag,with crag being the most sensitive to crack failures.关键词
时变啮合刚度/齿根裂纹/能量法/振动位移/故障机理Key words
time-varying meshing stiffness/root crack/energy method/vibration displacement/failure mechanism分类
机械制造引用本文复制引用
莫帅,胡庆森,王檑,岑国建..考虑齿根裂纹的传动系统动力学特性研究[J].华中科技大学学报（自然科学版）,2023,51(12):66-72,7.基金项目
国家自然科学基金资助项目(51805368) （51805368）
中国科协青年人才托举工程资助项目(2018QNRC001) （2018QNRC001）
数字制造装备与技术国家重点实验室开放基金资助项目(DMETKF2021017) （DMETKF2021017）
江苏省泰州市双创计划资助项目. （）
