用跃变旋转矢量研究滑动摩擦空气阻尼弹簧振子  

Dynamic rotation vector applied to spring oscillator under air damping and sliding friction

作　　者：伏静丹[1] 

机构地区：[1]大连理工大学物理与光电工程学院,辽宁大连116024

出　　处：《大学物理》2010年第5期23-26,共4页College Physics

摘　　要：运用跃变旋转矢量法,即通过旋转矢量的起点、长度和相位的变化规律对受到空气弱阻尼作用和滑动摩擦力作用的弹簧振子的振动进行了研究.讨论了在滑动摩擦力作用下空气阻尼为临界阻尼和欠阻尼情况下的弹簧振子的运动,根据阻尼和初值情况得出不同的振动曲线.并对弹簧振子4种相图和相图旋转矢量进行了比较.A dynamic rotation vector, including its starting point, length and phase change according to certain rules, is used to research the vibration of spring oscillator under sliding friction and air small damping. The vibration of spring oscillator is also studied under sliding friction and critical air damping （ or large air damping） , the curves of four kinds are given according to the initial value and damping. Four phase diagrams and phase diagram rotation vector of spring oscillator are analyzed.

关 键 词：弹簧振子 空气阻尼 滑动摩擦 旋转矢量 

分 类 号：O321[理学—一般力学与力学基础]