期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
LUBRICATION FILM FORMATION MECHANISM OF SLIPPER PAIRS IN LOW SPEED HIGH TORQUE HYDRAULIC MOTORS 被引量:5
1
作者 LI Yong SHI Guanglin CHEN Zhaoneng 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2007年第1期31-35,共5页
Pressure-flow analytical formulas of lubrication film of slipper pairs on camshaft connecting rod type low speed high torque (LSHT) hydraulic motors are put forward. The bottom surface of slipper pairs is rectangle,... Pressure-flow analytical formulas of lubrication film of slipper pairs on camshaft connecting rod type low speed high torque (LSHT) hydraulic motors are put forward. The bottom surface of slipper pairs is rectangle, and the effect of squeeze flow and pressure differential flow is considered. The dynamic process of lubrication film formation through squeezing is numerically studied by computer simulation. Effects of supply pressure, initial lubrication film thickness, velocity damping coefficient, loading impact and gravity, etc are studied. Advantages of novel slipper pairs with large oil cavity area are pointed out. 展开更多
关键词 Camshaft connecting rod Low speed high torque Hydraulic motor Slipper pair
下载PDF
How does a woodpecker work? An impact dynamics approach 被引量:1
2
作者 Yuzhe Liu Xinming Qiu +2 位作者 Tongxi Yu Jiawei Tao Ze Cheng 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2015年第2期181-190,共10页
To understand how a woodpecker is able accelerate its head to such a high velocity in a short amount of time,a multi-rigid-segment model of a woodpecker's body is established in this study.Based on the skeletal speci... To understand how a woodpecker is able accelerate its head to such a high velocity in a short amount of time,a multi-rigid-segment model of a woodpecker's body is established in this study.Based on the skeletal specimen of the woodpecker and several videos of woodpeckers pecking,the parameters of a three-degree-of-freedom system are determined.The high velocity of the head is found to be the result of a whipping effect,which could be affected by muscle torque and tendon stiffness.The mechanism of whipping is analyzed by comparing the response of a hinged rod to that of a rigid rod.Depending on the parameters,the dynamic behavior of a hinged rod is classified into three response modes.Of these,a high free-end velocity could be achieved in mode II.The model is then generalized to a multihinge condition,and the free-end velocity is found to increase with hinge number,which explains the high free-end velocity resulting from whipping.Furthermore,the effects of some other factors,such as damping and mass distribution,on the velocity are also discussed. 展开更多
关键词 Woodpecker Muscle torque High impact velocity Whipping Hinged rod
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部