| 网格对潜孔锤钻头球齿冲击过程数值模拟的影响 |
| |
| 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(岩土钻掘工程),2007,34(6):10-13. |
| |
| 作者姓名： | 瞿叶高 卜长根 刘宝林 |
| |
| 作者单位： | 中国地质大学<北京>工程技术学院,北京,100083 |
| |
| 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。
|
| 关 键 词： | 潜孔锤钻头 硬质合金球齿 冲击 网格尺寸 |
| 文章编号： | 1672-7428（2007）06-0010-04 |
| 修稿时间： | 2006-12-15 |
Effect on Numerical Shnulation of DTH Hammer Bit Insert Impact Process by Mesh Size |
| |
| 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. |
| |
| Authors: | QU Ye-gao BU Chang-gen LIU Bao-lin |
| |
| Affiliation: | School of Engineering and Technology, China University of Geosciences, Beijing 100083, China |
| |
| 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: | LS-DYNA3D |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《探矿工程(岩土钻掘工程)》浏览原始摘要信息 |
|
点击此处可从《探矿工程(岩土钻掘工程)》下载全文 |
