| 网格对潜孔锤钻头球齿冲击过程数值模拟的影响 |
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| 引用本文： | 瞿叶高 卜长根 刘宝林. 网格对潜孔锤钻头球齿冲击过程数值模拟的影响[J]. 探矿工程, 2007, 34(6): 10-13 |
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| 作者姓名： | 瞿叶高 卜长根 刘宝林 |
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| 作者单位： | [1]中国地质大学（北京）工程技术学院,北京100083 |
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| 基金项目： | 国家自然科学基金项目（项目编号：50475056） |
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| 摘 要： | 潜孔锤钻头冲击钻进的过程是一个高度非线性、大变形、破坏的过程。对这一复杂过程的研究，目前主要是利用实验方法。应用非线性显式三维有限元求解程序LS—DYNA3D，采用与岩石性质较接近的混凝土模型，对潜孔锤钻头硬质合金球齿冲击混凝土板的过程进行了仿真计算，讨论了不同网格尺寸对冲击力、冲击速度及破碎坑深度的影响等。
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| 关 键 词： | 潜孔锤钻头 硬质合金球齿 冲击 网格尺寸 LS—DYNA3D |
| 修稿时间： | 2006-12-15 |
Effect on Numerical Shnulation of DTH Hammer Bit Insert Impact Process by Mesh Size |
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| QU Ye-gao,BU Chang-gen,LIU Bao-lin. Effect on Numerical Shnulation of DTH Hammer Bit Insert Impact Process by Mesh Size[J]. Exploration Engineering:Rock & Soil Drilling and Tunneling, 2007, 34(6): 10-13 |
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| Authors: | QU Ye-gao BU Chang-gen LIU Bao-lin |
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| Affiliation: | QU Ye-gao, BU Chang-gen, LIU Bao-lin ( School of Engineering and Technology, China University of Geosciences, Beijing 100083, China) |
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| Abstract: | The process of down-the-hole hammer （DTH） drilling is very complex because of its high non-linear, large deformation and damage behavior. For this complex problem, current studies are mainly based on experiments. The process, impacting concrete slab with tungsten carbide button of DTH hammer bit, was simulating calculated by non - linear finite element software LS-DYNA3D on concrete model, the effects of different target mesh sizes of concrete on impaction force, impact velocity and penetration depth was discussed. |
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| Keywords: | DTH hammer bit tungsten carbide insert impact mesh size LS-DYNA3D |
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