动态法测杨氏模量实验的探索与改进

Improvements of Measuring the Young's Modulus by Dynamic Method and Its Research on Teaching

本文的主要工作有:分析了国内外杨氏模量测量的原理与方法;把测量装置由悬挂法改为支撑法,增加了实验棒的长度(原实验棒长度16 cm,新实验棒长度23 cm),扩大了数据的测量范围;移动支架置于导轨上,可直接在导轨标尺上准确读数,每隔3 mm测一次数据,数据增多;组装调试实验装置,测量了黄铜、纯铜、钛三种材料的杨氏模量并进行数据处理,将改进后实验系统测得的结果和原实验系统测得的结果以公认值进行比较,完善了改进后实验系统的教学功能。

Its main content is analyzing the theories and methods of Young's modulus at home and abroad,in-creasing the length of experiment bar( original length is 16 cm,revised length is 23 cm) ,increasing the measure scale;installing mobile stand on the rail,measuring every 3 mm of rail rod,increasing the amount of data;set-ting up the experiment device,measuring and processing the Young’ s modulus of brass,copper and titanium, comparing the results of revised experiment system,original experiment system and theoretical value;improving the teaching function of revised experiment system,compiling experiment guidance.