基于电测法测量弹性模量和泊松比的实验研究  

An Experimental Study on the Measurement of the Elastic Modulus and Poisson's Ratio Based on the Electrical Measurement Method

作　　者：陈红兵[1] 胡立帮 姚丽萍[1] 李丽[1] CHEN Hongbing;HU Libang;YAO Liping;LI Li(College of Engineering and Technology,Southwest University,Chongqing,400715 China)

机构地区：[1]西南大学工程技术学院,重庆400715

出　　处：《科技资讯》2024年第12期236-239,244,共5页Science & Technology Information

基　　金：国家自然科学基金面上项目(项目编号:51875480);重庆市自然科学基金(项目编号:cstc2021jcyjmsxmX0433);西南大学实验技术研究项目(项目编号:SYJ2021019)。

摘　　要：测量材料的弹性模量和泊松比是材料力学实验的一项重要实验项目。为了丰富材料力学实验教学手段和教学内容,把理论计算、有限元仿真技术和电测法测试技术有机地融合在一起。分别通过电测法、ABAQUS软件模拟和理论计算方法得到低碳钢的弹性模量和泊松比。结果表明:模拟结果和理论计算结果几乎相等,但是电测法实验测试结果与理论计算结果之间的误差相对较大,主要是由于电阻应变片在试样表面的粘贴质量不高和试样的几何尺寸测量不精确造成的。Measuring the elastic modulus and Poisson's ratio of materials is an important experimental project in Ex-periments of Mechanics of Materials.In order to enrich the teaching methods and teaching contents of Experiments of Mechanics of Materials,theoretical calculation,finite element simulation technology and electrical measurement testing technology are organically integrated,and the elastic modulus and Poisson's ratio of low-carbon steel are ob-tained by electrical measurement,ABAQUS software simulation and theoretical calculation methods.The results show that simulation results are almost equal to theoretical calculation results,but the error between the experimen-tal measurement results of the electrical measurement method and the results of theoretical calculation is relatively large,which is mainly caused by the poor bonding quality of the resistance strain gauge on the surface of the sample and the inaccurate measurement of the geometric dimension of the sample.

关 键 词：电测法 ABAQUS软件 弹性模量 泊松比 材料力学实验 

分 类 号：TB302.1[一般工业技术—材料科学与工程]