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Evaluation of Blast influence by Artificial Joint in Concrete Block  

Noh, You-Song ((주)코리아카코)
Min, Gyeong-Jo (전북대학교 자원.에너지공학과)
Oh, Se-Wook (전북대학교 자원.에너지공학과)
Park, Se-Woong (전북대학교 자원.에너지공학과)
Suk, Chul-Gi ((주)코리아카코)
Cho, Sang-Ho (전북대학교 자원.에너지공학과)
Park, Hoon ((주)코리아카코)
Publication Information
Explosives and Blasting / v.36, no.3, 2018 , pp. 1-9 More about this Journal
Abstract
This study was conducted to evaluate the influences of the angle of artificial joints, the distance between the artificial joints and the blast hole, and the number of artificial joints on the pressure wave propagation, crack propagation, and blast wave velocity. The evaluation was conducted numerically by use of the Euler-Lagrange solver supported by the AUTODYN, which is a dynamic FEM program. As a result, it was found that the blast wave velocity was decreased most rapidly as either the distance between the artificial joint and the blast hole was decreased or the angle of the artificial joint was increased. In contrast to the case of no artificial joint, the amount of attenuation of the blast wave velocity was considerably large when an artificial joint was present. However, the effect of the number of artificial joint on the attenuation of the blast wave velocity was negligible under the given condition.
Keywords
Artificial joint; Numerical analysis; Concrete block; AUTODYN; Blast velocity;
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