充水和内空管道在爆炸冲击荷载下的数值模拟分析
详细信息 查看官网全文
- 英文论文题名：The numerical simulation analysis of water-filled pipes and inner air pipes on the basis of explosive blast
- 论文作者：房冲 ; 邓正栋 ; 王光远
- 英文论文作者：Fang Chong ; Deng Zhengdong ; Wang Guangyuan ; PLA University of Science and Technology
- 年：2016
- 作者机构：解放军理工大学;
- 论文关键词：爆炸冲击 ; 充水管道 ; 动力响应
- 英文论文关键词：explosion shock ; liquid-filled pipes ; dynamic response
- 会议召开时间：2016-09-26
- 会议录名称：中国土木工程学会2016年学术年会论文集
- 语种：中文
- 分类号：O38
- 学会代码：OGTY
- 会议名称：中国土木工程学会2016年学术年会
- 会议地点：中国北京
- 主办单位：中国土木工程学会
- 学会名称：中国土木工程学会
- 页数：10
- 文件大小：1702k
- 原文格式：O
- 会议级别：全国
摘要
空中爆炸冲击荷载作用下,充水和内空(空气介质)管道的动力响应是一个值得研究的问题。利用ANSYS/LS-DYNA有限元软件,运用非线性动力学基本理论和算法,适当选取材料及本构关系,建立合适的计算模型,对空中TNT炸药爆炸冲击荷载下,充水和内空管道的动力响应规律进行了数值模拟分析。通过数据分析可以得出:爆炸冲击荷载下,在等量炸药的条件下,充水管道的变形量、单元位移、单元压强峰值及背爆面压强变化率较内空管道低,随着炸药量的增加,这些参数的增加速率也均低于内空管道;充水管道抗变形能力更强,稳定性更高。
The dynamic response of the water-filled and the inner air(air medium) pipeline under the impact of the air blast is a question worthy of deep research.Using the finite element software ANSYS/LS-DYNA and applying nonlinear dynamic theory and algorithm,the numerical simulation analysis was applied to the dynamic response rules of water-filled pipes and inner air pipelines under the TNT explosion shock loading with the appropriate calculation model and proper materials and the constitutive relation.Through the data analysis it can be drawn:under blast loading,with the same amount of TNT,these parameters,the deformation of the water-filled pipe,the displacement of pipe's element,peak pressure and back burst pressure change rate,are lower than the inner air pipeline.and with the increase of explosion,the increase rate of these parameters is not higher than inner air pipeline.And it's destruction resistant ability is stronger,stabler and higher.
The dynamic response of the water-filled and the inner air(air medium) pipeline under the impact of the air blast is a question worthy of deep research.Using the finite element software ANSYS/LS-DYNA and applying nonlinear dynamic theory and algorithm,the numerical simulation analysis was applied to the dynamic response rules of water-filled pipes and inner air pipelines under the TNT explosion shock loading with the appropriate calculation model and proper materials and the constitutive relation.Through the data analysis it can be drawn:under blast loading,with the same amount of TNT,these parameters,the deformation of the water-filled pipe,the displacement of pipe's element,peak pressure and back burst pressure change rate,are lower than the inner air pipeline.and with the increase of explosion,the increase rate of these parameters is not higher than inner air pipeline.And it's destruction resistant ability is stronger,stabler and higher.
引文
[1]Ma X Q,Stronge W J.Spherical missile impact and perforation of filled tubes[J].International Journal of Impact Engineering,1988,3(1):1-16.
[2]纪冲,龙源,刘影,等.充液及内空圆柱壳在爆炸荷载下动力屈曲特性研究[J].振动与冲击,2014,33(2):76-80,88.
[3]钱七虎,王明洋,赵跃堂.爆炸波作用下三相饱和土中不动障碍物上的荷载[J].爆炸与冲击,1994,14(3):97-104.
[4]赵长啸,龙源,纪冲,等.土中爆炸冲击作用下埋地管道动力响应数值模拟研究[J].综述与爆破理论.
[5]李晓杰,张程娇,王小红,等.水的状态方程对水下爆炸影响的研究[J].工程力学,2014,3l(8):46-53.
[6]王辉.炸药爆炸产物JWL状态方程参数数值计算[D].西安:西安工业大学,2011.
[7]都的箭,梁雪莹,邓正栋,等.埋地管线爆炸地冲击作用下解析解计算研究[J].爆破,2011,28(3):21-25.
[8]杨政,郭万林,董惠茹,等.X 70管线钢静态和动态韧性试验研究[J].西安交通大学学报,2003,37(5):488-491.
[9]姚安林,赵师平,么惠全,等.地下爆炸对埋地输气管道冲击响应的数值分析[J].西安石油大学学报,2009,31(4):168-172.
[2]纪冲,龙源,刘影,等.充液及内空圆柱壳在爆炸荷载下动力屈曲特性研究[J].振动与冲击,2014,33(2):76-80,88.
[3]钱七虎,王明洋,赵跃堂.爆炸波作用下三相饱和土中不动障碍物上的荷载[J].爆炸与冲击,1994,14(3):97-104.
[4]赵长啸,龙源,纪冲,等.土中爆炸冲击作用下埋地管道动力响应数值模拟研究[J].综述与爆破理论.
[5]李晓杰,张程娇,王小红,等.水的状态方程对水下爆炸影响的研究[J].工程力学,2014,3l(8):46-53.
[6]王辉.炸药爆炸产物JWL状态方程参数数值计算[D].西安:西安工业大学,2011.
[7]都的箭,梁雪莹,邓正栋,等.埋地管线爆炸地冲击作用下解析解计算研究[J].爆破,2011,28(3):21-25.
[8]杨政,郭万林,董惠茹,等.X 70管线钢静态和动态韧性试验研究[J].西安交通大学学报,2003,37(5):488-491.
[9]姚安林,赵师平,么惠全,等.地下爆炸对埋地输气管道冲击响应的数值分析[J].西安石油大学学报,2009,31(4):168-172.