大学物理 ›› 2021, Vol. 40 ›› Issue (4): 15-18.doi: 10. 16854 /j. cnki. 1000-0712. 200015

• 物理实验 • 上一篇    下一篇

横卧式杨氏模量与组装台秤实验仪的设计

李成龙,常芳锦,寿化杰,沈祺凯   

  1. 安徽理工大学力学与光电物理学院,安徽淮南232001
  • 收稿日期:2020-01-13 修回日期:2020-08-19 出版日期:2021-04-13 发布日期:2021-04-21
  • 作者简介:李成龙( 1976—) ,男,安徽天长人,安徽理工大学力物学院高级实验师,硕士,从事基础物理实验教学与实验技术研究工作.
  • 基金资助:
    安徽省省级质量工程项目( 2017jyxm0184) 资助

Design of a horizontal Young's modulus instrument and assembling a platform scale

LI Cheng-long,CHANG Fang-jin,SHOU Hua-jie ,SHEN Qi-kai   

  1. College of Mechanics and Photoelectric Physics,Anhui University of Science and Technology,Huainan,Anhui 232001,China
  • Received:2020-01-13 Revised:2020-08-19 Online:2021-04-13 Published:2021-04-21

摘要: 通过对横向放置的钢丝进行受力分析,推导出其杨氏模量的测量公式,进而运用该公式对其杨氏模量进行实验测

量. 再用该杨氏模量值作为已知参数,利用该钢丝作为压力的应变传感器件,反向设计出一款简易台秤,推导出其测量公式,

并用来测定未知物体的重力. 此设计将传统的验证性实验项目拓展改进成设计性实验项目,减小了原实验误差,丰富了实验内容.

关键词: 杨氏模量, 读数显微镜, 台秤

Abstract: Based on the stress analysis of steel wires placed horizontally,the measuring formula

of the young's modulus is derived,and then it is measured experimentally. Using the value of

young's modulus as a known parame- ter and steel wire as a strain sensor of the pressure,a simple

platform scale is designed and its measuring formula is derived to measure the gravity of unknown

object. Such a design makes the traditional confirmatory experiment im- prove to a designing

experiment,reduces the experimental error and also enriches the experiment contents.

Key words: young's modulus, reading microscope, platform scale