基于智能手机测量液体黏滞系数的方法研究

doi:10.14139/j.cnki.cn22-1228.2022.02.025

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摘要

基于阻尼振动的原理，利用智能手机测量弹簧振子的加速度，通过阻尼振动的动力学方程计算出金属球做阻尼振动时液体的阻尼系数和黏滞系数，并将黏滞系数测量值与理论值进行比较，相对误差为 0.39％，进一步论证了本实验方案的可行性。与传统方案相比，基于智能手机的液体黏滞系数测量方法操作简单且趣味性强，同时降低了传统实验方法的仪器成本，对物理实验的线上教学具有一定的参考意义。

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	曲　阳
	曹显莹
	曹国军
	何海霞

关键词: 阻尼振动加速度传感器黏滞系数弹簧振子

Abstract:

Based on the principle of damped vibration,the acceleration of spring vibrator is measured by smartphone.The damping coefficient and viscosity coefficient of liquid are calculated by the general solution of dynamic equation of damped vibration.The measured value of viscosity coefficient is compared with the theoretical value ,the relative error is 0.39 percent.The feasibility of this experimental scheme is demonstrated Compared with the traditional scheme,the method based on smartphone is easy to operate and interesting. Meanwhile,it reduces the instrument cost of traditional experimental methods,which has a certain reference significance for online teaching of physical experiments.

Key words: damped vibration acceleration sensor viscositycoefficient spring vibrator

出版日期: 2022-04-25 发布日期: 2022-04-25 整期出版日期: 2022-04-25

ZTFLH:

O-433

引用本文:

曲　阳, 曹显莹, 曹国军, 何海霞. 基于智能手机测量液体黏滞系数的方法研究 [J]. 大学物理实验, 2022, 35(2): 117-120.
QU Yang , CAO Xianying , CAO Guojun , HE Haixia. Research on the Method of Measuring Liquid Viscosity Coefficient Based on Smartphone . Physical Experiment of College, 2022, 35(2): 117-120.

链接本文:

http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2022.02.025 或 http://dawushiyan.jlict.edu.cn/CN/Y2022/V35/I2/117

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