Affiliation:
1. State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, China
2. Engineering Research Center of Safety and Protection of Explosion & Impact of Ministry of Education, Southeast University, Nanjing 211189, China
Abstract
Explosion craters on the ground surface induced by contact or near-field explosions have important implications, which can be used to assess blast consequences, guide the design of the explosion, or develop a protective strategy. In this study, to understand the crater characteristics induced by the contact explosion of large weight explosives, four field contact explosion tests were conducted on the surface of the Gobi Desert with large TNT charge weights of 1 ton, 3 tons, and 10 tons (test conducted twice). Cratering on the ground surface generated by large amounts of explosives was measured and evaluated, including the shape, depth, and diameter. A fine-mesh numerical model was developed and validated on the AUTODYN software platform, and a detailed parametric study was performed on the resulting craters. The effects of sand and gravel density, initiation method, shear modulus, and failure criteria were analyzed and discussed. An energy conversion coefficient was determined, and the corresponding theoretical equations were derived to predict the dimensions of the craters resulting from the large weight contact explosion. The calculated cratering characteristics were consistent with previous data and hence can be used in future engineering applications.
Funder
National Natural Science Foundation of China
Subject
Mechanical Engineering,Mechanics of Materials,Geotechnical Engineering and Engineering Geology,Condensed Matter Physics,Civil and Structural Engineering
Reference40 articles.
1. Analysis on the building damage, personnel casualties and blast energy of the 8·12 explosion in Tianjin port;F. Qin;China Civil Engineering Journal,2017
2. Analysis of the power and disaster consequences of “3.21” explosion accident in the chemical industry park of Xiangshui, Yancheng city;D. Chen;Journal of Disaster Prevention and Mitigation Engineering,2019
3. Beirut ammonium nitrate explosion: are not we really learning anything?;H. J. Pasman;Process Safety Progress,2020
4. High-explosive craters in desert alluvium, tuff, and basalt
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. Estimating the Size of a Crater after an Underwater Explosion;Advances in Science and Technology Research Journal;2023-10-20