国际设备工程与管理（英文版）2007，Vol.12Issue(4)：234-240,7.
Velocities and Displacements of Shrapnel and a Shock Wave during Blast
Velocities and Displacements of Shrapnel and a Shock Wave during Blast
ZHAO De-hui 1TIAN Da-zhan 2XU Jin-yu 2ZHANG Hai-rong1
作者信息
- 1. Mechanics and Civil Engineering Institute,Northwestern Polytechnical University,Xi'an 710072,P.R.China
- 2. The Engineering Institute,Air Force Engineering University,Xi'an 710038,P.R.China
- 折叠
摘要
Abstract
It is important to minimize the destruction of defense works when blasted. In our opinion,information in the available literature is very deficient. We now present our research results on better and simpler formulas for calculating the velocities and displacements of shrapnel and a shock wave;these formulas are indispensable for understanding the destruction of blast. Formulas now available in China are too complicated. In this paper, we derive Equation (13) as the formula for calculating the velocity of shrapnel and Equation (18) as that for calculating the velocity of a shock wave. We used the test data of Denver Research Institute, as reported in Reference 4, as numerical example and found that our Equations (13) and (18) give calculated results that agree well with their test data in two respects: (1) both test data and our calculations show that at first a shock wave is ahead of shrapnel,then their displacements are equal, and finally shrapnel is ahead of the shock wave; (2) when the displacements of shrapnel and shock wave are equal, the time is 0.34 s according to test data and 0.31 s according to our calculations.关键词
blast/shrapnel/shock wave/displacementKey words
blast/shrapnel/shock wave/displacement分类
管理科学引用本文复制引用
ZHAO De-hui,TIAN Da-zhan,XU Jin-yu,ZHANG Hai-rong..Velocities and Displacements of Shrapnel and a Shock Wave during Blast[J].国际设备工程与管理（英文版）,2007,12(4):234-240,7.
