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Dynamic mechanical response of rock target under impact loading was analyzed by LS-DYNA finite element method.Stress-time curves in different impact velocities were obtained by sensors buried in rock target. The comparative analysis of experiment and simulation shows that the main reason of rock failure is the joint action of longitudinal compression wave and transverse sparse wave,and the conclusions...
The stress enhancement in passive confining pressure SHPB experiment for concrete material was studied by dimensional analysis and finite element method, the stress enhancement coefficient was defined to describe this kind of phenomenon. The effect of sleeve with different material and dimension on peak stress was analyzed by LS-DYNA finite element method, the results show that the stress peak will...
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