Analysis methods of projection velocity and flight trajectory of explosion fragments

作者：Zhang, Xin-Mei; Chen, Guo-Hua^*

来源：Journal of South China University of Technology(Natural Science Edition), 2009, 37(4): 106-110.

• Domino effects
• Explosion fragment
• Flight trajectory
• Polytropic process
• Projection velocities

Clear projection velocity and flight trajectory of explosion fragments in chemical industry parks help to reveal the Domino effect caused by the fragments. In this paper, a formula is deduced to calculate the initial projection velocity of the fragments according to the theory of explosion expansion work and the state equation of polytropic process. The acceleration equations of flying fragments are constructed according to the variations of motion direction and force direction of the fragments. Moreover, the methods to analyze the flight trajectory and projection velocity of explosion fragments are proposed by solving the acceleration equations as well as by analyzing the boundary conditions. A case study is finally performed and the results indicate that the proposed formula of initial projection velocity and the analysis method of flight trajectory well reflect the basic projection laws of explosion fragments, and are both theoretically significant and practically valuable for the analyses of accident consequences and the Domino effect.

• 出版日期2009-4
• 单位华南理工大学