Action-effect study of medium under loading of explosion stress wave and explosion gas
YANG Renshu1，2，DING Chenxi1，WANG Yanbing1，CHEN Cheng1
(1. School of Mechanics and Civil Engineering，China University of Mining and Technology，Beijing 100083，China； 2. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology， Beijing 100083，China)
Abstract：Using laboratory model test method with the material of PMMA，combining numerical simulation of LS-DYNA，action-effect on medium under loading of explosion stress wave and explosion gas was studied. The result showed that effect of explosion stress wave mainly led to formation of microcracks in the smash area，effect of explosion gas was the major impetus of crack formation in the crack area.Mechanics characteristic of medium in the elastic vibration area was compressive firstly and tensile secondly. The function of explosion gas dramatically increased peak values of stress(strain) and loading time of medium in the elastic vibration area，it proved that explosion gas had dynamic effect in addition to quasi-static effect. It indicated that the theory of rock blasting need further improvement and amendment，algorithm of numerical simulation which took the actual process of explosion stress wave and explosion gas into account need to be developed urgently.
杨仁树1，2，丁晨曦1，王雁冰1，陈 程1. 爆炸应力波与爆生气体对被爆介质作用效应研究[J]. 岩石力学与工程学报, 2016, 35(S2): 3501-3506.
YANG Renshu1，2，DING Chenxi1，WANG Yanbing1，CHEN Cheng1. Action-effect study of medium under loading of explosion stress wave and explosion gas. , 2016, 35(S2): 3501-3506.
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2016, Vol. 35 
