LS-DYNA锚杆钻机冲击钻进应力波工作特性研究  

Research of the Impact of Work Stress Wave Characteristics of Hydraulic Jumbolter Based on LS-DYNA

作　　者：王晓瑜[1] 

机构地区：[1]西安航空学院电气学院,陕西西安710077

出　　处：《机械设计与制造》2016年第1期69-72,共4页Machinery Design & Manufacture

基　　金：陕西省科技攻关项目(2011K10-18);陕西省教育厅专项科研项目(09JK559)

摘　　要：分析了液压锚杆钻机冲击钻进时,应力波的产生、传递及冲击能大小对钻进效果的影响。使用LS-DYNA有限元分析软件,建立了钎齿、钎头及钎杆的三维模型;建立了冲击钻进的MAT_JOHNSON_HOLM QUIST_CONCRETE有限元混凝土模型,对锚杆钻机冲击钻进时应力波在钎杆中传播及钎头冲击能的变化进行仿真与分析。仿真结果表明,当冲击钻进时,应力波及冲击能随时间的变化情况与锚杆钻机实际工况相一致,验证了仿真值的有效可行性和理论分析的正确性,为锚杆钻机液压冲击器的研究提供了理论基础。It analyzed wave mechanical model of hydraulic impact system,stress wave production,transfer and the impact energy when drill moving forward of hydraulic jumbolter. Established the three-dimensional model of tooth drill,the drill bit and the drill rod. Established finite element model-MAT_JOHNSON_HOLM QUIST_CONCRETE of hydraulic impact rotating the jumbolter crashing rock-soil system based on LS-DYNA. Stimulated and analyzed the effect of impact power. The stimulations show that the stress wave and the impact energy were gradually decayed？when drill moving forward. The results were consistent with the changes of the actual working condition,verifying the correctness and feasibility of the theoretical analysis of the effective simulation value,providing theoretical basis for impact characteristics research of hydraulic impactor.

关 键 词：锚杆钻机 冲击钻进 应力波 传递 冲击能 衰减 

分 类 号：TH16[机械工程—机械制造及自动化]