JMC对应力波透射系数和节理比刚度影响的实验研究

doi:10.13722/j.cnki.jrme.2015.1717

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Abstract Joints have significant influence on the dynamic properties of rock masses. Using the apparatus of modified split Hopkinson pressure bar(SHPB)，an experimental study was carried out on one dimensional stress wave propagating through the artificial granite joint. The interfaces of granite specimens were sawn to form the artificial joints with different joint match coefficients(JMCs). The incident wave across the joint and the reflected wave and transmitted wave induced by the joint were obtained with the method of two-points wave separation and then the transmission coefficients of the stress wave propagation through the joints were calculated. The relation between the pressure and closure of the joint was obtained according to the principles of SHPB test，thereby the specific stiffness of the joint was acquired. The effects of the joint match coefficients on wave propagation through the joint and on the dynamic mechanical behavior of the granite joint were discussed.

Key words： rock mechanics artificial granite joint modified split Hopkinson pressure bar(SHPB) test joint match coefficients(JMC) specific stiffness

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	Articles by authors
	CHEN Xin1
	LI Jianchun2
	REN Fenhua1
	CAI Meifeng1

Cite this article:

CHEN Xin1,LI Jianchun2,REN Fenhua1, et al. Experimental research of JMC effect on stress wave propagation and joint specific stiffness[J]. , 2016, 35(5): 957-963.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.1717 OR http://www.rockmech.org/EN/Y2016/V35/I5/957

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