超声悬浮过程中圆柱体的旋转运动机理研究

发布时间：2018-01-11 03:05

本文关键词：超声悬浮过程中圆柱体的旋转运动机理研究　出处：《物理学报》2017年12期 　论文类型：期刊论文

【摘要】：研究了圆柱体在超声悬浮过程中的旋转运动机理.实验发现:悬浮圆柱体的密度和长径比越小,转动惯量越小,其稳态旋转的转速越大;反射端在水平方向的偏移会产生回复力矩,使圆柱体停止旋转,且圆柱体静止时的轴线方向与反射端偏移方向垂直;在圆柱体两端加入适当的外界干扰可以主动抑制其旋转.计算表明,悬浮圆柱体的旋转起源于其质心偏移产生的力矩,而反射端位置的偏移以及发射端的倾斜均会抑制圆柱体的旋转.
[Abstract]:Study on the mechanism of rotating cylinder in the process of ultrasonic suspension. The experiment shows that the suspension cylinder density and the ratio of length to diameter is smaller, the smaller moment of inertia, the steady-state rotation speed is larger; the reflector is offset in the horizontal direction will result in restoring moment, so that the cylinder stops rotating, and the axis of cylinder at rest and the reflector is perpendicular to the direction of migration; at both ends of the cylinder with appropriate interference can take the initiative to inhibit its rotation. Calculation shows that the origins of rotation cylinder suspended from its centroid moment caused the tilt reflector position offset and the transmitter can inhibit the cylinder rotation.

【作者单位】：西北工业大学应用物理系;
【基金】：国家自然科学基金(批准号:51327901,51501153)资助的课题~~
【分类号】：O313
【正文快照】： 研究了圆柱体在超声悬浮过程中的旋转运动机理.实验发现:悬浮圆柱体的密度和长径比越小,转动惯量越小,其稳态旋转的转速越大;反射端在水平方向的偏移会产生回复力矩,使圆柱体停止旋转,且圆柱体静止时的轴线方向与反射端偏移方向垂直;在圆柱体两端加入适当的外界干扰可以主动抑

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