螺栓故障状态下齿轮传动系统数字化建模与动力学仿真分析
Digital Modeling and Dynamic Simulation Analysis of Gear Transmission System in Bolt Fault State
鞠东兵 1吴樾 2马博昭 2李晓锋3
作者信息
- 1. 海装沈阳局,辽宁 沈阳 110031
- 2. 中国船舶集团有限公司第七○三研究所,黑龙江 哈尔滨 150078
- 3. 北京科技大学 机械工程学院,北京 100083
- 折叠
摘要
为探究螺栓松动和断裂故障对齿轮减速器动态特征的影响规律,完善齿轮传动系统早期故障诊断理论与方法,本文建立了从完好到故障状态下斜齿轮减速器数字化样机参数化模型,利用多体动力学理论推导了数字化样机多级齿轮传动系统的振动微分方程,采用数字化样机和内驱动求解模型研究了完好和故障状态下齿轮减速器的动态特性,获得了螺栓松动和断裂故障的振动特征.结果表明:与完好状态相比,螺栓故障会使得齿轮啮合频率幅值有所增大,螺栓松动时两级啮合频率幅值分别增大约19.8%和45.4%,且螺栓松动会引起啮合频率两边出现边频带;螺栓断裂时两级啮合频率幅值分别增大约15.3%和2.1%.
Abstract
In order to explore the influence of bolt loosening and fracture faults on the dynamic character-istics of gear reducers,and improve the theory and method of early fault diagnosis in gear transmission systems,this paper established a parameterized model of a digital prototype of a helical gear reducer from intact to faulty states.The vibration differential equation of a multi-stage gear transmission system of digit-al prototype was derived using the theory of multibody dynamics.The dynamic characteristics of the gear reducer under intact and faulty states were studied by using digital prototype and internal drive solution model,and the vibration characteristics of bolt loosening and fracture faults were obtained.The results show that compared with intact states,bolt failure increases the amplitude of gear engagement frequency,the magnitudes of the two-stage engagement frequencies increase by about 19.8%and 45.4%respective-ly when the bolts are loosened,and loose bolts will cause sidebands on both sides of the engagement fre-quency;the magnitudes of two-stage engagement frequencies increase by about 15.3%and 2.1%re-spectively when the bolts are broken.
关键词
齿轮传动系统/螺栓故障/数字化模型/动力学仿真/故障特征分析Key words
gear transmission system/bolt failure/digital model/dynamics simulation/fault feature a-nalysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据