摘要
将单根多楔带附件驱动系统中相邻两轮之间的带段简化成纵向运动梁,推导了纵向运动带(梁)横向振动固有频率的计算方程。以一典型的三轮(主动轮、从动轮和张紧轮)-带附件驱动系统为例,分别运用轮-(梁)带耦合模型(将带简化为梁)和单根纵向运动梁(带)模型,计算分析了附件驱动系统中各带段的横向振动频率。结果表明,当带的弯曲刚度较小和带速较低时,可以利用单根纵向运动梁(带)模型计算得到带的横向振动固有频率。该文的计算方法和结论,为单根多楔带附件驱动系统中带横向振动固有频率的计算分析提供了分析模型和计算方法。
A belt span between two adjacent pulleys in accessory drive systems is simplified as an axial moving Bernoulli-Euler beam, and a formula for estimating natural frequencies of the belt span is derived. Taking a simple accessory drive system as a studying example, which includes a driving pulley, a driven pulley, a belt and a tensioner, the natural frequencies for different belt spans are calculated using the two different models. One model is the belt-pulley coupled model, in which the belt span is modeled as a beam with bending stiffness, and another model is that the belt is modeled as an axial moving Bernoulli-Euler beam. The natural frequencies of a belt calculated with the two different models are compared for different bending stiffness of a belt, and it is shown that the difference of the calculated frequency with different models becomes large when the bending stiffness is increasing. The influences of bending stiffness and belt velocity on the calculated natural frequencies are investigated in the end.
出处
《工程力学》
EI
CSCD
北大核心
2014年第12期193-199,共7页
Engineering Mechanics
基金
国家自然科学基金项目(50975091)
汽车安全与节能国家重点实验室开放基金项目(KF10162)
关键词
附件驱动系统
带传动
横向振动
固有频率
计算方法
accessory drive system
belt drive
transverse vibration
frequency
calculation method
