基于入、反射波的杆波阻特性反演方法  

The inversion of variable characteristics impedance of the rod based on incident waves and reflection waves

作　　者：刘德顺[1] 何先可[1] 段凯[1] 徐小艳[1] 

机构地区：[1]湖南科技大学机械设备健康维护省重点实验室,湖南湘潭411201

出　　处：《煤炭学报》2009年第9期1281-1284,共4页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50774032);湖南省教育厅重点科研资助项目(07A018);湖南省自然科学基金资助项目(07555074)

摘　　要：提出了一种根据间接测试法获得的钎杆上的应变来推算钻头波阻的方法.首先描述应力波在变波阻部件中的传播规律,建立基于波透反射关系方程,然后介绍已知冲击入射波和钻头反射波反求钻头波阻的反演原理与计算方法,最后以数值仿真对反演方法的正确性进行了验证.A new method was proposed to estimate variable characteristics impedance of the dill bit from the strains in a drill rod using strain measurement. Firstly, described stress wave propagation in a rod with variable characteristics impedance and established a relationship between incident waves and reflection waves based on the wave equation. Secondly, an inversion method for calculating characteristic impedance of the drill bit was introduced based on known incident waves and reflected wave from the drill bit. Finally, the inversion method was validated through the numerical simulation.

关 键 词：钎杆 波阻特性 反演 应力波 

分 类 号：TD421.25[矿业工程—矿山机电]