期刊论文

Hong Liang

英文

中南大学学报(英文版)

2095-2899

2009

16

4

677-682

10.1007/s11771-009-0112-5

Projects（50674107, 10472134, 50490274） supported by the National Natural Science Foundation of China；

本校为其他机构

In order to determine the relationship among energy consumption of rock and its fragmentation, dynamic strength and strain rate, granite, sandstone and limestone specimens were chosen and tested on large-diameter split Hopkinson pressure bar (SHPB) equipment with half-sine waveform loading at the strain rates ranging from 40 to 150 s−1. With recorded signals, the energy consumption, strain rate and dynamic strength were analyzed. And the fragmentation behaviors of specimens were investigated. The experimental results show that the energy consu...

为了在精力之中决定关系，岩石和它的破碎，动态力量和紧张率，花岗石，沙岩和石灰石标本的消费在大直径的裂口 Hopkinson 上被选择并且测试有在紧张装载的一半正弦波形的酒吧(SHPB ) 设备评估从 40 ～ 150 s1 的压力。与记录信号，精力消费，紧张率和动态力量被分析。并且标本的破碎行为被调查。试验性的结果证明岩石的精力消费密度与全部的事件精力线性地增加。精力消费密度具有与岩石碎片的平均尺寸的一种代表关系。越高精力消费密度，越多严肃破碎，并且更好碎片的阶段。精力消费密度与岩石的动态力量拿一种好对数关系。岩石的动态力量随紧张率的增加增加，显示更高的紧张率敏感。