圆筒内旋转细长梁振动分析的关键参数

根据有限元理论,利用ANSYS软件建立了旋转细长梁有限元理论模型。在转速为100 r/min、钻压为200 N条件下,研究内筒轴向压力、细长比的因素影响以及内筒转速对内筒横向位移的变化情况。结果表明:随着细长比的增长,距离中间节点越远的节点,起始时间越滞后。在有自重影响下,下节点的横向位移随轴向力变化,位移依次变大。内筒随着转速的增加,内筒的横向位移也逐渐变大。

Cylinder rotating slender beam vibration analysis of key parameters

Based on finite element theory, using ANSYS software to establish a rotating slender beam finite element theoretical model. The rotational speed of 100rpm, drilling pressure 200N under the conditions of the study, tube axial pressure, the slenderness ratio of the factors, as well as drilling pressure for 200N under the conditions of the internal tube of the inner cylinder speed transverse displacement changes. The results showed that: With the growth of the slenderness ratio, the farther the node from the intermediate node, the start time, the more lag; weight impact, the next node horizontal displacement changes with the axial force, displacement followed by larger; the inner cylinder with speed increases, the lateral displacement of the inner cylinder is gradually larger.