摘要
由于各种激振因素的存在,精密仪器在运行或者服役的过程中,振动往往是不可避免的,振动会影响仪器仪表的功能降低精密仪器的工作精度,引起结构系统疲劳破坏。文中以基础环境振动对精密仪器产生的影响,以精密仪器和基础环境简化为二自由度模型,应用动力学理论得出精密仪器在自由度方向的位移幅值表达式。
Owing to the existence of various vibration factors, vibration of precision instruments is often inevitable in the process of operation or service. Vibration will affect the function of the instrument and reduce the working precision of precision instruments, and will cause fatigue damage of structural system. This paper studies the effects of basic envixxmment vibration on the precision instruments. Precision instruments and basic environment are simplified as 2-DOF model. Finally, displacement amplitude expression in the direction of freedom is obtained using theory of dynamics.
出处
《机械工程师》
2015年第11期34-35,共2页
Mechanical Engineer
关键词
基础环境
精密仪器
动力放大系数
频率比
basic environment
precision instruments
dynamic magnification factor
frequency ratio
