IMPACTS OF DETONATING MODE ON BLAST STRESS FIELD OF LINEAR EXPLOSIVE CHARGE
XIANG Wen-fei,SHU Da-qiang,ZHU Chuan-yun (State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)
Analysis of blast stress field is a basic problem of blasting theory research about linear explosive charge. The propagation of blast wave through the linear explosive charge is an important factor which influences the characteristics of the blast stress field induced by the linear explosive charge. Combining the Starfield superposition method with dynamic finite element method,a numerical model of blast stress field research of linear explosive charge is proposed. In this model,principles of Starfield superposition are adopted to realize the propagation of blast wave through the linear explosive charge,and the dynamic finite element method is used to analyze the evolution and formation of blast stress field induced by linear explosive charge in the medium. It can be concluded that the number and position of detonating point play an important role in forming the blast stress field of linear explosive charge,and in engineering practice,it is very useful for improving the blasting effect to reduce the blast time of linear explosive charge by arranging the number and position of detonating points correctly.
【CateGory Index】： TV542