辽宁工程技术大学学报(自然科学版)
遼寧工程技術大學學報(自然科學版)
료녕공정기술대학학보(자연과학판)
JOURNAL OF LIAONING TECHNICAL UNIVERSITY NATURAL SCIENCE EDITION
2013年
4期
488-492
,共5页
掘进机%镐形截齿%离散元法%煤岩%圆盘颗粒%截割角%动态破坏过程%仿真
掘進機%鎬形截齒%離散元法%煤巖%圓盤顆粒%截割角%動態破壞過程%倣真
굴진궤%호형절치%리산원법%매암%원반과립%절할각%동태파배과정%방진
roadheader%conical pick%discrete element methods%coal%disc particles%the cutting angle%dynamic breaking process%simulation
为了研究截齿截割煤岩的动态破坏过程,提出采用离散元法进行截齿截割煤岩的仿真分析.根据截割头结构建立了相应的离散元模型,采用二维圆盘颗粒建立了煤岩的离散元模型,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,通过 VC++6.0编写了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进行仿真,结果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.
為瞭研究截齒截割煤巖的動態破壞過程,提齣採用離散元法進行截齒截割煤巖的倣真分析.根據截割頭結構建立瞭相應的離散元模型,採用二維圓盤顆粒建立瞭煤巖的離散元模型,通過接觸和連接力學模型計算截割過程中的作用力.在此基礎上,通過 VC++6.0編寫瞭離散元倣真計算程序,藉助 MFC 建立友好的人機交互界麵,實現瞭截齒截割煤巖工作過程的離散元倣真.通過對截割角為45°條件下的截齒截割煤巖進行倣真,結果初步證明瞭採用離散元法的可行性,為截齒截割過程分析和截齒的優化設計提供瞭一種新的研究手段.
위료연구절치절할매암적동태파배과정,제출채용리산원법진행절치절할매암적방진분석.근거절할두결구건립료상응적리산원모형,채용이유원반과립건립료매암적리산원모형,통과접촉화련접역학모형계산절할과정중적작용력.재차기출상,통과 VC++6.0편사료리산원방진계산정서,차조 MFC 건립우호적인궤교호계면,실현료절치절할매암공작과정적리산원방진.통과대절할각위45°조건하적절치절할매암진행방진,결과초보증명료채용리산원법적가행성,위절치절할과정분석화절치적우화설계제공료일충신적연구수단.
@@@@Adopting Discrete Element Method (DEM), to research the dynamic breaking process of cutting coal were put forward in this paper. The DEM analysis model of a two-dimensional cutting head was established through its CAD model, 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 calculation program of DEM with VC++6.0 was complied, and the friendly man-machine interface by means of MFC was too established, which realized the simulation of DEM in the process of cutting coal. Through adopting the cutting angle of 45-degree, the simulation of cutting coal was analyzed by using the DEM. The feasibility of DEM was validated, and provided a new method for analyzing the process of cutting coal and digital design of conical pick.
