截齿截割煤岩的离散元法仿真方法研究  

Study on Pick Cutting Coal and Rock by DEM Simulation Method

作　　者：纪玉杰[1] 曹学涛[1] 

机构地区：[1]沈阳理工大学机械工程学院,辽宁沈阳110159

出　　处：《矿业研究与开发》2013年第2期84-87,117,共5页Mining Research and Development

基　　金：辽宁省自然科学基金资助项目(201202186);辽宁省教育厅科学技术研究一般项目资助(L2011034)

摘　　要：为了研究截齿截割煤岩的动态破坏过程,提出采用离散元法建立模型并进行仿真。由截割头的CAD模型建立了截割头的二维离散元法分析模型,采用二维圆盘颗粒建立了煤岩的分析模型,通过接触和连接力学模型计算截割过程中的作用力。在此基础上,用VC++6.0编写离散元仿真计算程序,借助MFC建立友好的人机交互界面,实现了截齿截割煤岩工作过程的离散元仿真。通过对截割角为45°条件下的截齿截割煤岩仿真分析,初步证明了采用离散元法的可行性,为截齿截割过程分析和截齿的优化设计提供了一种新的研究手段。Discrete Element Method （DEM） was adopted to establish model and simulate the dynamic breaking process of cutting coal by pick. Based on CAD model of cutting head, a two--dimensional DEM analysis model of cutting head was established, the analysis model of coal was too established with two -- dimensional disc particles, and the contact and connection mechanics model were used to calculate contact force in cutting process. On this basis, the simulation calcula- tion program of DEM with VC＋ ＋6.0 was complied, and the friendly man--machine interface was too established by means of MFC, which realized the simulation DEM of the process of cutting coal. The simulation and analysis of cut- ting coal under the cutting angle of 45- degree was carried out by using the DEM,and the feasibility of DEM was vali- dated. It provided a new method for analyzing the process of cutting coal and optimum desi~：n of Dick.

关 键 词：镐形截齿 煤岩 离散元法 力学模型 仿真 

分 类 号：TD421.5[矿业工程—矿山机电]