起重运输机械
起重運輸機械
기중운수궤계
Hoisting and Conveying Machinery
2015年
9期
42-47
,共6页
斗轮取料机%切削阻力%仿真试验%离散元法
鬥輪取料機%切削阻力%倣真試驗%離散元法
두륜취료궤%절삭조력%방진시험%리산원법
bucket wheel reclaimer%cutting resistance%simulation test%discrete element
将离散单元与有限元藕合，创建了斗轮取料机挖掘阻力时间历程仿真试验模型。考虑料堆物料特性、铲斗形状与含水率等因素，对取料过程进行了模拟分析。得到挖掘切削阻力随时间变化的历程曲线。揭示了取料阻力历经的三个阶段与物料填充状态。各阻力分量的时间历程曲线与相关测试结果吻合，模拟铲斗容积、阻力系数与设计相符。研究成果为斗轮取料机的动力学分析、疲劳寿命预测提供了有价值的信息资料。
將離散單元與有限元藕閤，創建瞭鬥輪取料機挖掘阻力時間歷程倣真試驗模型。攷慮料堆物料特性、鏟鬥形狀與含水率等因素，對取料過程進行瞭模擬分析。得到挖掘切削阻力隨時間變化的歷程麯線。揭示瞭取料阻力歷經的三箇階段與物料填充狀態。各阻力分量的時間歷程麯線與相關測試結果吻閤，模擬鏟鬥容積、阻力繫數與設計相符。研究成果為鬥輪取料機的動力學分析、疲勞壽命預測提供瞭有價值的信息資料。
장리산단원여유한원우합，창건료두륜취료궤알굴조력시간역정방진시험모형。고필료퇴물료특성、산두형상여함수솔등인소，대취료과정진행료모의분석。득도알굴절삭조력수시간변화적역정곡선。게시료취료조력력경적삼개계단여물료전충상태。각조력분량적시간역정곡선여상관측시결과문합，모의산두용적、조력계수여설계상부。연구성과위두륜취료궤적동역학분석、피로수명예측제공료유개치적신식자료。
By coupling the discrete unit with finite elements,the paper develops the test model for digging resistance time-history simulation of bucket wheel reclaimer.Considering material features,bucket shape,water content and other factors,the simulation analysis is performed on the material-taking process to get the time-varying history curve for the dig-ging and cutting resistance.The paper also presents three phases of material-taking resistance and the material filling state. The time-history curve of each drag component is consistent with related test results,and the simulated bucket volume and resistance coefficient agree with the design.The study outcome provides valuable information for dynamic analysis and fa-tigue life prediction of the bucket wheel reclaimer.
