探矿工程-岩土钻掘工程Issue(3)：69-75,7.
切削齿型结构对金刚石钻头钻进性能影响的仿真分析
Simulation Analysis on the Influence of Cutting Teeth Structure on Drilling Efficiency of Impregnated Diamond bit
摘要
Abstract
Three-dimensional finite element model of impregnated diamond bit was established based on finite element analy-sis software ANSYS/LS-DYNA and the influence of cutting teeth structure on drilling efficiency was analyzed with the field test verification carrying out;a new method for stress area comparison based on Image-Pro Plus was present.The results show that stress concentration appears for concentric ring cutting teeth structure at the front edge of cutting teeth along the ro-tation direction in initial drilling stage, while non obvious stress concentration appears for saw teeth bit.But different degrees of stress concentration appear at inner and outer diameter edges near the nozzle part for these two kinds of bits in late drilling stage, which may lead to abnormal wear.The saw cutting teeth bits are more efficient than concentric ring ones, but the bit service life is slightly lower.关键词
LS-DYNA/孕镶金刚石钻头/切削齿型结构/计算机仿真/碎岩机理Key words
LS-DYNA/impregnated diamond bit/cutting teeth structure/computer simulation/rock fragmentation mecha-nism分类
天文与地球科学引用本文复制引用
王佳亮,张绍和,周怀发,杨汉军..切削齿型结构对金刚石钻头钻进性能影响的仿真分析[J].探矿工程-岩土钻掘工程,2015,(3):69-75,7.基金项目
国家自然科学基金“盾构刀群与岩土耦合作用机理及应用研究” （）
