文档介绍：2004 ANSYS 中国用户论文集
游梁式抽油机运动过程中的模态变化规律
王建军
石油大学储运与建筑工程学院山东东营 257061
杨秀娟闫相祯
石油大学储运与建筑工程学院山东东营 257061
[ 摘要] 针对抽油机野外振动试验的局限性和抽油机振动特性随曲柄运转的变化状态,对抽油机运
动过程中的模态变化规律进行了系统分析。以 C—320D—256—120 型游梁式抽油机为例,
根据无阻尼结构振动理论,利用有限元数值模拟的方法,计算出抽油机在自由振动时完全
阶次的振动特性:固有频率和振型,得到振动特性与曲柄转角的关系,固有频率基本上随
曲柄转角按正(余)弦规律变化,并指出抽油机最先破坏部位的变化性。
[ 关键词] 游梁式抽油机有限元固有频率振型
Mode disciplinarian of the beam pumping unit in course
of movement
Wang JianJun
University of Petroleum, Dongying Shandong 257061
Yang XiuJuan, Yan XiangZhen
University of Petroleum, Dongying Shandong 257061
[ Abstract ] In the light of the limitions with the experimentation of the pumping unit vibration in the
field and the changing station of the vibration characteristics of the crank, the mode
disciplinarian of the pumping unit is analysed by system. By taking as an example model
C—320D—256—120,According as the theory of structural vibration for an undamped
system, by the numerical simulation method of the finite element , we attain the vibration
characteristics (natural frequencies and mode shapes) of the integrated steps that the
pumping units do in free vibration ,the relationship of the vibration characteristics and the
crank-corner, and the transformation by the law of sines(cosines) with the natural
frequencies and the crank-corner, point out the pumping unit to first break the pa