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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

28卷

期数:

2011年01期

页码:

96-99,17

栏目:

出版日期:

2011-03-20

文章信息/Info

Title:

Numerical Analysis of Explosion Process in Soil

作者:

赵均海¹,冯红波²,田宏伟³,魏雪英¹

1. 长安大学 建筑工程学院,陕西 西安 710061; 2. 武汉市建筑设计院,湖北 武汉 430014; 3. 昆山市建筑设计有限公司,江苏 昆山 215300

Author(s):

ZHAO Jun-hai¹, FENG Hong-bo², TIAN Hong-wei³, WEI Xue-ying¹

1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. Wuhan Architectural Design Institute, Wuhan 430014, Hubei, China; 3. Kunshan Architectural Deign Co., Ltd., Kunshan 215300, Jiangsu, China

关键词:

土中爆炸;  集团药包;  爆腔半径;  折合距离;  峰值压力

Keywords:

explosion in soil;  concentrated charge;  radius of explosion cavity;  scale distance;  peak pressure

分类号:

TU431

DOI:

-

文献标志码:

A

摘要:

采用ANSYS/LS-DYNA有限元分析软件,对集团药包的土中爆炸作用进行了数值模拟,研究了爆炸作用下土介质的动力响应、爆腔的形成和发展规律及土中爆炸波的传播规律。结果表明:炸药爆炸后在土中留下一个充满爆炸气体的空腔(爆腔),爆腔半径约为炸药原半径的7倍,当爆炸波波阵面到达测定单元时,压力瞬间达到峰值,然后随着时间的增长逐渐降低,趋于平缓,且随着折合距离的增大,峰值压力不断减小; 数值模拟的结果与理论计算结果吻合较好。

Abstract:

A numerical simulation of explosion process with concentrated charge in soil was carried out by using finite element analysis software ANSYS/LS-DYNA. The dynamic response of soil medium, the formation and development law of explosion cavity and the explosion wave propagation law in soil were investigated. The results indicate that the radius of explosion cavity is about seven times original radius of concentrated charge. When the wave-amplitude face of explosion wave gets to the testing elements, pressure at that position increases to a peak value of overpressure instantly and then gradually decreases with time. The peak pressure falls obviously with increasing of scale distance. The numerical simulation results agree well with the theoretical calculation results.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2010-11-10
基金项目:陕西省自然科学基础研究计划项目(SJ08E₂04)
作者简介:赵均海(1960-),男,陕西西安人,教授,博士研究生导师,工学博士,博士后,E-mail:zhaojh@chd.edu.cn。

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更新日期/Last Update: 2011-03-20