摘要
用一维绝热模型研究了滑动推力轴承在阶跃载荷冲击下的热瞬态行为。通过对轴承油膜压力、温度和推力盘的动力学参数进行建模,应用有限差分以及Runge-Kutta法等对模型求解,获得了大载荷阶跃冲击条件下推力轴承热瞬态过程中性能参数的非线性响应曲线,给出了瞬态过程中轴承最高温度、最小膜厚等参数的变化规律。结论认为如果轴承设计和运行不当,轴承有可能因为瞬态过程中温升过高或膜厚的突然减小而失效。
The thermal transient behaviour of the thrust bearing under a step load was studied by use of one-dimensional adiabatic thermal model. The dynamic equation of the runner was established to take into account the effects of its motion. The models were solved by finite differential and Runge-Kutta methods. The response of highest film temperature, minimum film thickness and other parameters of the bearing to load impact were presented during the transient period. The resuits indicate that the bearing will be damaged if the parameters of design and operate are not selected properly.
出处
《润滑与密封》
CAS
CSCD
北大核心
2009年第1期43-45,共3页
Lubrication Engineering
关键词
推力轴承
热瞬态
阶跃载荷
thrust beating
thermal transient
step load
