摘要
在一维细长杆中，通过任意不重合的两个截面处的应变测试，就可以计算出杆中任一截面处的应变和质点速度等物理量，并且可以分离出顺波和逆波。本文不但在实验上和理论上对该方法进行了证明，而且成功的将其用于岩石冲击凿入特性的研究。
In this paper it is shown that for a slender bar subjected to longitudinal impact, physical parameters such as longitudinal strain and particle velocity at any cross section of the bar can be determined by computation from the recorded strains at two arbitrary noncoincided sections, and the waves propagating in the positive and negative directions of the bar respectively can also be recognized. Based on this principle, the penetrationresistance characterestics for the rock under percussive drilling is studied experimentally. Some meaningful results are obtained.
出处
《实验力学》
CSCD
北大核心
1997年第4期572-578,共7页
Journal of Experimental Mechanics
基金
国家自然科学基金
关键词
应力波
应变量测
岩石破碎
冲击凿入
stress wave, strain measurement, rock fragmentation, percussive penetration.
