Link-Interface技术在救生舱数值检测中的应用

曾一鑫; 白春华; 李建平; 陈健; 王仲琦

doi:10.11858/gywlxb.2014.01.014

Link-Interface技术在救生舱数值检测中的应用

doi: 10.11858/gywlxb.2014.01.014

北京理工大学爆炸科学与技术国家重点实验室，北京 100081

详细信息

作者简介:
曾一鑫(1986-), 男, 博士研究生, 主要从事土中爆炸研究.E-mail 10902002@bit.edu.cn

中图分类号: O383; TD792
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出版历程
- 收稿日期: 2012-05-13
- 修回日期: 2013-01-07

Application of Link-Interface Technology in Numerical Testing of Rescue Cabin

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 对煤矿井下救生舱体的抗冲击强度进行数值检测时，经常将舱门等特殊结构进行简化，以缩短计算周期；然而，当救生舱体受到爆炸冲击时，发生较大变形或失效的部位多出现在这些特殊结构上。为了能够模拟这些结构的动态响应，同时又不影响整体分析的计算周期，研究了一种基于LS-DYNA有限元软件的Link-Interface数值模拟技术。利用该技术，对某特定救生舱的舱门及加强筋进行了重点计算。结果表明：在正面冲击压力峰值为1.5 MPa的前提下，舱门的最大位移单元在中心位置，并且位移峰值随着冲击载荷的压力上升时间呈指数衰减规律；增加环向加强筋的厚度对于提升舱体侧面强度的效果优于轴向加强筋，因此设计救生舱时应该重点考虑环向加强筋的厚度。
- 救生舱 /
- 爆炸冲击载荷 /
- 数值计算 /
- 舱门 /
- 加强筋
Abstract: While testing the strength of a rescue cabin under blasting, the door and other special structures of the underground coal mine rescue cabin are usually simplified to shorten the time of calculation.When the rescue cabin is attacked by blasting, the large deformation or failure frequently occurred in those structures.In order to simulate the dynamic response of these special structures without increasing the calculation time, a numerical method based on LS-DYNA named Link-Interface is studied.The cabin door and reinforced ribs are calculated in detail by this method.The results show that as the peak pressure of blast loading is 1.5 MPa, the largest deformation appears at the middle of cabin door, and its maximum displacement diminishes exponentially with pressure rise time.Circumferential ribs play more important role in reducing the surface displacement and increasing the strength of the cabin than axial ribs.The results can provide a certain theoretical basis for designing and testing an underground coal mine rescue cabin.
- rescue cabin /
- blasting load /
- numerical simulation /
- cabin door /
- reinforced ribs

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图 1 救生舱整体模型

Figure 1. Whole model of rescue cabin

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图 2 舱门的精细网格划分

Figure 2. Accurate grid of cabin door

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图 3 冲击载荷曲线

Figure 3. Curve of blasting load

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图 4 舱门位移云图

Figure 4. Displacement nephogram of cabin door

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图 5 s_max随t_l的指数衰减

Figure 5. s_max diminished exponentially with t_l

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图 6 加强筋位置示意图

Figure 6. Position of reinforced ribs

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图 7 L_max随加强筋厚度的变化

Figure 7. Change of L_max with the thickness of reinforced rib

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参考文献(5)

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[2]	Fasouletos M A. Parametric design of a coal mine refuge chamber[D]. Morgantown, USA: West Virginia University, 2007.
[3]	Mitchell M D. Analysis of underground coal mine refuge shelters[D]. Morgantown, USA: West Virginia University, 2008.
[4]	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 X T. Experiment on anti-shock performance of mine rescue capsule[J]. Mining Safety & Environmental Protection, 2010, 37(3): 25-30. (in Chinese)
[5]	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, 2007, 26(1): 8-11. Li G Q, Sun J Y, Wang K Q. Research on a simplified frame column model to resist blast load[J]. Journal of Vibration and Shock, 2007, 26(1): 8-11. (in Chinese)