爆破器材2017，Vol.46Issue(6)：6-10,16,6.DOI:10.3969/j.issn.1001-8352.2017.06.002
爆炸冲击波作用于便携式防爆墙的绕射规律
Diffraction Laws of Explosion Shock Waves Acting on Portable Explosion-proof Walls
邵先锋 1赵捍东 1朱福林 2吕晓明 3吴凡达1
作者信息
- 1. 中北大学机电工程学院 山西太原,030051
- 2. 四川航天电子设备研究所 四川成都,611900
- 3. 中国人民解放军军械研究所 河北石家庄,050000
- 折叠
摘要
Abstract
In order to study the diffraction laws of blast shock waves acting on portable flexible explosive-proof walls, LS/DYNA software was used with the Euler coupling algorithm to analyze effect of the portable explosive-proof wall on diffracted overpressure under conditions of different charge in the same distance, same charge in different distance and same charge in different wall thickness. Simulation with different TNT charges established the formula to calculate peak overpressure near the back wall, and the validity of the calculation model was verified by comparing the reflection overpres-sure at the front wall and diffraction overpressure at the back wall with experimental data. Results show that the diffraction peak overpressure is positively correlated with the charge, and is negatively correlated with explosion-proof wall thickness;the peak overpressure location is away from the back wall by about 2 times the height of the wall. When explosion distance is more than 2. 4 meters, the diffraction peak overpressure at the back wall increases initially, reach to the maximum value at the distance of about 2 times the height of the wall and then decreases. When explosion distance is less than 2. 4 meters, the peak overpressure at the back wall appears at a position about 1 meter away from the wall. The diffraction law is coinci-dent with the experimental results.关键词
便携式防爆墙/爆炸冲击波/环流超压/绕射规律/数值模拟Key words
explosion-proof walls/shock waves/diffracted overpressure/diffraction laws/numerical simulation分类
数理科学引用本文复制引用
邵先锋,赵捍东,朱福林,吕晓明,吴凡达..爆炸冲击波作用于便携式防爆墙的绕射规律[J].爆破器材,2017,46(6):6-10,16,6.
