| 受迫振动法研究压强变化对气体阻尼系数的影响 |
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| 引用本文： | 韩桃,齐峰,王安琪.受迫振动法研究压强变化对气体阻尼系数的影响[J].大学物理实验,2014(6):44-47. |
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| 作者姓名： | 韩桃 齐峰 王安琪 |
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| 作者单位： | 中国矿业大学 北京,北京,100083 |
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| 摘 要： | 采用弹性摆受迫振动时幅频特性对阻尼的依赖关系为依据,借助非接触电磁激振装置和（AX1001）单片机,通过测量所得的幅频特性曲线算出相应的阻尼系数。在密闭的环境下,改变空气的压强得到相应数值下的空气阻尼系数,最终,给出空气阻尼系数与压强之间的关系。
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| 关 键 词： | 弹性摆 受迫振动 幅频特性 空气阻尼系数 (AX1001)单片机 |
Using Forced Vibration Method to Study the Effect to Air Damping Coefficient by the Change of Pressure Intensity |
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| HAN Tao,QI Feng,WANG An-qi.Using Forced Vibration Method to Study the Effect to Air Damping Coefficient by the Change of Pressure Intensity[J].Physical Experiment of College,2014(6):44-47. |
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| Authors: | HAN Tao QI Feng WANG An-qi |
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| Institution: | ( China University of Mining and Technology, Beijing 100083 ) |
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| Abstract: | It is based that amplitude frequency characteristics depend on damping when the flexible pendulum is forced to vibrate by the damped oscillation with the help of non-contact electromagnetic vibration device and Single Chip Micyoco. The corresponding damping coefficient is gotten due to the measured amplitude frequency characteristic curve. The relationship between coefficient of air resistance and pressure is studied by changing the air pressure in closed environment to get different air damping coefficient. |
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| Keywords: | elastic pendulum forced vibration damping amplitude-frequency characteristics pressure air damping non-contact electromagnetic vibration light amplification single Chip Micyoco |
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