| 爆炸荷载作用下部分埋置结构响应的数值模拟方法 |
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| 引用本文： | 廖维张,杜修力,田志敏.爆炸荷载作用下部分埋置结构响应的数值模拟方法[J].北京工业大学学报,2007,33(2):155-159. |
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| 作者姓名： | 廖维张 杜修力 田志敏 |
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| 作者单位： | 北京工业大学,教育部与北京市共建城市与工程安全减灾重点实验室,北京,100022;总参工程兵国防工程研究设计所,北京,100850 |
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| 基金项目： | 国家杰出青年基金资助项目(50325826);;国家人防办“十五”计划资助项目(2002-022);;北京市教育委员会科学技术与研究生教育建设资助项目(4700001401509) |
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| 摘 要： | 为了比较不同的数值模拟方法进行动力响应分析的优缺点,采用爆腔内壁施加经验压力和高爆炸药材料模型(ALE算法)模拟爆炸荷载,分析了部分埋置结构的动力响应．结果表明:爆腔内壁施加经验压力时程模拟爆炸荷载的方法与Lagrangian算法模拟爆炸荷载的方法所得的数值结果相近,但其计算精度低于ALE算法, Lagrangian算法和ALE算法相比,所需计算工作量较少,爆腔内壁施加经验压力模拟爆炸荷载的方法在实用性上具有一定的优势．
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| 关 键 词： | 爆炸荷载 地下结构 动力响应 动力荷载 数值模拟 |
| 文章编号： | 0254-0037(2007)02-0155-05 |
| 修稿时间： | 10 15 2005 12:00AM |
Numerical Simulation Methods on Dynamic Response of Partially-buried Structure Under Blast Loading |
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| LIAO Wei-zhang,DU Xiu-li,TIAN Zhi-min.Numerical Simulation Methods on Dynamic Response of Partially-buried Structure Under Blast Loading[J].Journal of Beijing Polytechnic University,2007,33(2):155-159. |
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| Authors: | LIAO Wei-zhang DU Xiu-li TIAN Zhi-min |
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| Abstract: | In this paper,the numerical simulation of the dynamic response inside partially-buried structures is studied out by the LS-DYNA3D program．During the simulation of the explosive loads,there are two meth- ods．One is that equivalent pressure time-histories inside explosive cavity are used to simulate the loads．The other is that using a piece of DYNA3D material specifically designed for simulating high explosive detonation (ALE)．The results indicate that the numerical simulated precision of method and the precision of Lagrangian method is very close．The precision of the ALE method is much higher than the above metioned two methods, but more computing time is required．So the equivalent pressure time-histories inside explosive cavity method is superior in practice． |
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| Keywords: | blasting underground structures dynamic response dynamic loads numerical simulation |
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