期刊论文

Energy evolution of single fractured rock-like specimens affected by loading rate

中文

应用力学学报

1000-4939

2020

37

03

1151-1159

10.11776/cjam.37.03.B055

51704168:国家自然科学基金 2016M602417:中国博士后科学基金

本校为第一机构

为了研究加载速率对单裂隙类岩石试样破坏过程中能量演化进程的影响规律,分析裂隙类岩石试样在不同加载速率下的能量响应特征,以预埋金属薄片方法制作的裂隙类岩石试件为研究对象,基于RMT-150B对单裂隙类岩石试样进行四级加载速率下的单轴压缩试验,获得四级加载速率下裂隙类岩石试样力学性能。试验结果表明:单裂隙类岩石试样峰值强度与加载速率呈正相关性,但增长速率随加载速率的增加而减小;当加载速度不断增大时,峰值处试样弹性应变能积聚能力增强,但是耗散应变能随加载速率的增大而逐渐减小;裂隙试样在峰值后会累积弹性应变能,但其积聚能力随加载速率的增大而有所削弱;裂隙试样耗散应变能转化...

To investigate the influence of loading rate on fracture characteristic and energy evolution process of single fissure specimen, rock-like specimens made by embedded aluminium alloy sheet were tested at different loading rates under uniaxial compression. It shows that the peak strength and modulus of elasticity correlate positively with the loading rate, but their growth rates decrease with the increase of loading rate; the elastic strain energy increases with the increase of loading rate at the peak strength, while the dissipated strain energy decreases with the increase of loading rate; the ...