基于组合变形法测量金属杨氏模量和切变模量  

Measurement of Young s modulus and shear modulus of metals based on a combined deformation method

作　　者：王昊[1] 李浩 唐曹 WANG Hao;LI Hao;TANG Cao(School of Emergency Management and Safety Engineering,China University of Mining&Technology,Beijing 100083,China;School of Mechanical Electronic and Information Engineering,China University of Mining&Technology,Beijing 100083,China;School of Chemical and Environmental Engineering,China University of Mining&Technology,Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)应急管理与安全工程学院,北京100083 [2]中国矿业大学(北京)机电与信息工程学院,北京100083 [3]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《大学物理》2020年第11期76-79,共4页College Physics

摘　　要：本文提出了一种弯扭组合变形装置,利用该装置可实现在一次加载的情况下同时测量出材料的杨氏模量和切变模量.此装置克服了传统物理实验中需要独立的两套装置进行测量的弊端.在本文提出的装置中,用很小的力(1 N左右)即可产生较大的形变(10 mm左右),这使得可以用位移传感器代替光杠杆测量形变,从而使整个装置的体积相比传统拉伸法测量杨氏模量装置的体积大幅缩小,具备较好的使用价值和推广价值.This paper presents a combined bending-torsional deformation device that can simultaneously measure the Young s modulus and the shear modulus of the material under one load.This device overcomes two separate sets of device for the measurement.In the device proposed in this article,a large deformation(about 10 mm)can be generated by a small force(about 1 N),which allows us to use displacement sensors to measure the deformation instead of an optical lever.As a result,the entire device is significantly smaller than the traditional tensile method for measuring the Young s modulus device,which has better use value and promotion value.

关 键 词：杨氏模量 切变模量 组合变形法 

分 类 号：O4-34[理学—物理]