巷道救生舱抗冲击数值仿真
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摘要
基于辅助设计软件Hypermesh与有限元计算软件LS-DYNA,对某简单钢结构救生舱体在冲击载荷作用下的动态响应进行数值模拟。舱体单元的最大位移与压力增大时间成存在极小值的负指数衰减规律,并随超压作用时间成存在极大值的指数增长规律,进行数值仿真检测时不能忽略压力载荷时间参数的影响。环向加强筋的厚度从8 mm增大到14 mm时,舱体单元最大位移减小3 mm;轴向加强筋从8 mm增大到14 mm时,舱体单元最大位移仅减小0.9 mm,说明环向加强筋对减小救生舱表面位移、提高救生舱的抗冲击能力起主要作用。
Based on Hypermesh and LS-DYNA,the dynamic response of a rescue capsule of simple steel structure under blasting was simulated by numerical method.The maximum displacement on the cabin diminishes exponentially with the pressure rise time,and increases as the overpressure affecting time,the numerical simulation of detection can not ignore the effects of time-parameters.The maximum displacement of cabin unit decreases 3 mm while the thickness of circumferential ribs increass from 8 mm to 14 mm,and it decreases only 0.9 mm as the thickness of axial ribs increases from 8 mm to 14 mm.Circumferential ribs plays an important role on reducing surface displacement and increasing the strength of the cabin.Certain theoretical basis about designing and testing is provided by the results of numerical simulation.
Based on Hypermesh and LS-DYNA,the dynamic response of a rescue capsule of simple steel structure under blasting was simulated by numerical method.The maximum displacement on the cabin diminishes exponentially with the pressure rise time,and increases as the overpressure affecting time,the numerical simulation of detection can not ignore the effects of time-parameters.The maximum displacement of cabin unit decreases 3 mm while the thickness of circumferential ribs increass from 8 mm to 14 mm,and it decreases only 0.9 mm as the thickness of axial ribs increases from 8 mm to 14 mm.Circumferential ribs plays an important role on reducing surface displacement and increasing the strength of the cabin.Certain theoretical basis about designing and testing is provided by the results of numerical simulation.
引文
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[14]高金石,张奇.爆破理论与爆破优化[M].西安:西安地图出版社,1993.
[15]李国强,孙建运,王开强.爆炸冲击荷载作用下框架柱简化分析模型研究[J].振动与冲击,2011,36(5):713-717.Li Guoqiang,Sun Jianyun,Wang Kaiqiang.Research on a simpli-fied frame column column model to resist blast load[J].Journal ofVibration and Shock,2011,36(5):713-717.
[2]Michael A Fasouletos.Parametric design of a coal mine refuge cham-ber[D].Morgantown:West Virginia University,2007.
[3]高广伟,张禄华.煤矿井下移动救生舱的设计思路[J].中国安全生产科学技术,2009,5(4):162-165.Gao Guangwei,Zhang Luhua.Design principles of movable coal minerefuge chamber[J].Journal of Safety Science and Technology,2009,5(4):162-165.
[4]Mickey D Mitchell.Analysis of underground coal mine refuge shel-ters[D].Morgantown:West Virginia University,2008.
[5]栗婧,金龙哲,汪声,等.矿用救生舱中人体自身代谢一氧化碳规律分析[J].煤炭学报,2010,35(8):1303-1307.Li Jing,Jin Longzhe,Wang Sheng,et al.Regular analysis of the hu-man metabolism carbon monoxide in coal mine refuge chamber[J].Journal of China Coal Society,2010,35(8):1303-1307.
[6]焦健,朱华.矿用救生舱舱门锁紧机构设计[J].煤矿机械,2011,32(3):42-44.Jiao Jian,Zhu Hua.Locking mechanism design of mine rescue cabindoor[J].Coal Mine Machinery,2011,32(3):42-44.
[7]汪声,金龙哲,栗婧,等.矿用救生舱热环境分析[J].煤炭学报,2011,36(9):1524-1527.Wang Sheng,Jin Longzhe,Li Jing,et al.Analysis of thermal environ-ment of mine refuge chamber[J].Journal of China Coal Society,2011,36(9):1524-1527.
[8]胡汉华,古德生.矿井移动空调室技术的研究[J].煤炭学报,2008,33(3):318-321.Hu Hanhua,Gu Desheng.Research on technology of mobile air con-dition in groom in mines[J].Journal of China Coal Society,2008,33(3):318-321.
[9]樊小涛.矿用救生舱抗爆性能试验研究[J].矿业安全与环保,2010,37(3):25-30.Fan Xiaotao.Experiment on anti-shock performance of mine rescuecapsule[J].Mining Safety&Environmental Protection,2010,37(3):25-30.
[10]朱光明,李桂花,程建远.煤矿巷道内地震勘探的数值模拟[J].煤炭学报,2008,33(11):1263-1267.Zhu Guangming,Li Guihua,Cheng Jianyuan.Numerical simulationof seismic survey in coal mine roadway[J].Journal of China CoalSociety,2008,33(11):1263-1267.
[11]王海燕,曹涛,周心权,等.姜伟煤矿瓦斯爆炸冲击波衰减规律研究与应用[J].煤炭学报,2009,34(6):778-782.Wang Haiyan,Cao Tao,Zhou Xinquan,et al.Research and applica-tion of attenuation law about gas explosion shock wave in coal mine[J].Journal of China Coal Society,2009,34(6):778-782.
[12]周心权,吴兵,徐景德.煤矿井下瓦斯爆炸的基本特性[J].中国煤炭,2002,28(9):8-11.Zhou Xinquan,Wu Bing,Xu Jingde.Basic characteristics of gas ex-plosion in underground coal mines[J].China Coal,2002,28(9):8-11.
[13]Henrych J.The dynamics of explosion and its use[M].熊建国,译.北京:科学出版社,1987.
[14]高金石,张奇.爆破理论与爆破优化[M].西安:西安地图出版社,1993.
[15]李国强,孙建运,王开强.爆炸冲击荷载作用下框架柱简化分析模型研究[J].振动与冲击,2011,36(5):713-717.Li Guoqiang,Sun Jianyun,Wang Kaiqiang.Research on a simpli-fied frame column column model to resist blast load[J].Journal ofVibration and Shock,2011,36(5):713-717.
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