Abstract:To investigate the characteristics of rock specimen under static cyclic loading and repeated dynamic impact,comparative tests are carried out on rock rigid test machine and SHPB device respectively,and the stress-strain relationships are also obtained respectively. It is very difficult to obtain the relationships of rock under repeated impact. Compare the relationships of specimen under two types of loading,except strain ratio effect,there are so many similar characteristics between them. Firstly,the damage process is progressive,which includes yield,crack and broken steps. Secondly the stress-strain relation profile can be classified as elastic,harden,soften and residual part. Lastly the bearing capacity and modulus are gradually decreased after maximum point. The comparative experimental investigations illustrate that the rock mechanical properties under repeated dynamic impact can be approximately made out through the results of static cyclic loading.
邓国强,杨秀敏. 静力循环加载与动力重复冲击下岩石破坏全过程对比试验研究[J]. 岩石力学与工程学报, 2014, 33(3): 581-585.
DENG Guoqiang,YANG Xiumin. COMPARATIVE EXPERIMENTAL INVESTIGATION ON DAMAGE PROCESS OF ROCK UNDER STATIC CYCLIC LOADING AND
REPEATED DYNAMIC IMPACT. , 2014, 33(3): 581-585.
邓国强,杨秀敏. 钻地弹重复打击效应现场试验研究[J]. 防护工程,2012,(6):1-6.(DENG Guoqiang,YANG Xiumin. Experimental investigation into damage effect of repeat attack of precision-guided penetration weapon[J]. Protective Engineering,2012,(6):1-6.(in Chinese))
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