Impact friction test method by applying stress wave
Impact friction test method by applying stress wave
复制标题
DOI：
10.1007/bf02317304
复制
发表时间：
1997-12
影响因子：
2.4
通讯作者：
K. Ogawa
中科院分区：
文献类型：
--
作者：
K. Ogawa
为了解两物体接触时的动力学响应，目前主要研究碰撞过程中的动摩擦力，通过改进分离式Hopkinson压杆法，发展了一种新的试验技术，可独立提供法向和切向碰撞力。本文分析了输入管与旋转输出管轴向碰撞的一维框架中正应力波和扭转应力波的传播，并进行了实验验证。在高达5 m/s的高滑动速率下，黄铜的动摩擦被澄清，并且被发现几乎是恒定的，与法向力和滑动速度无关。本技术提供了直接测量的动摩擦与简单的配置和数据分析。
To understand the dynamic response of two bodies in contact, kinetic friction during impact presently is focused on. A new testing technique, which provides the normal and the tangential impact force independently, is developed by modifying the split Hopkinson pressure bar method. Normal and torsional stress wave propagation in a one-dimensional framework of an axial impact of an input tube on a rotating output tube is analyzed and is experimentally verified. Kinetic friction of brass was clarified at a high rate of sliding up to 5 m/s and is found to be almost constant independent of normal force and sliding velocity. The present technique provides direct measurement of kinetic friction with simple configuration and data analysis.