线材轧机轴承运行稳定性数值分析与试验研究  

Numerical Analysis and Experimental Research on Operating Stability of Wire Rod Mill Bearing

作　　者：蔡敏[1] 王建梅[1] 张亚南[1] 张艳娟[1] 吉宏斌[1] 

机构地区：[1]太原科技大学机械工程学院,太原030024

出　　处：《太原科技大学学报》2016年第2期119-125,共7页Journal of Taiyuan University of Science and Technology

基　　金：国家自然科学基金资助项目(51205269);山西省自然科学基金项目(2012011018-2)

摘　　要：为了研究线材轧机轴承的运行稳定性,从轴心轨迹的角度出发,基于润滑理论及欧拉迭代方法,建立了建求解线材轧机轴承轧辊轴心轨迹的数学模型,采用Fortran语言数值计算了不同转速和载荷影响下的轧辊轴心轨迹,同时从试验的角度对轧辊轴心轨迹进行了对比分析。数值计算结果表明,线材轧机轴承在高速轻载条件下具有较小的偏心率,但轧辊运行相对容易失稳,在低速重载时具有较大的偏心率,但轧辊运行相对较为稳定。此外,数值计算与试验结果差异较小,表明了理论模型及数值计算的可靠性。In order to study the operating stability of wire rod mill bearing, mathematical model of solving center trajectory is built on the basis of center trajectory and lubricating theory and Euler iterative method. Trajectory of roller center at different rotational speed and load was solved through numerical calculation with Fortran language. As comparison, the trajectory of roller center is tested based on oil-film bearing test rig. Numerical calculation resultsshow that when rotational speed is high and load is small, the eccentricity ratio is small and the trajectory tends to be instable. On the contrary,the eccentricity is large and trajectory tends to be stable. Furthermore, numerical cal- culation and test results are similar,which indicates that test results are reliable.

关 键 词：线材轧机轴承 运行稳定性 轴心轨迹 数值计算 偏心率 

分 类 号：TH133.31[机械工程—机械制造及自动化]