| 网格对潜孔锤钻头球齿冲击过程数值模拟的影响 |
| 修订日期：2006-12-15 点此下载全文 |
| 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].钻探工程,2007,34(6):10-13.. Effect on Numerical Shnulation of DTH Hammer Bit Insert Impact Process by Mesh Size[J]. Drilling Engineering, 2007,34(6):10-13. |
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| 瞿叶高 卜长根 刘宝林 |
中国地质大学(北京)
工程技术学院,北京100083 |
| 基金项目:国家自然科学基金项目（项目编号：50475056） |
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| 中文摘要: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。 |
| 中文关键词:潜孔锤钻头 硬质合金球齿 冲击 网格尺寸 LS—DYNA3D |
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| Effect on Numerical Shnulation of DTH Hammer Bit Insert Impact Process by Mesh Size |
| 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. |
| keywords:DTH hammer bit tungsten carbide insert impact mesh size LS-DYNA3D |
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