基于应变片的弹性体分布式位移测量方法 -- 西北工业大学学报,2017,35(3):422-427
论文:2017,Vol:35,Issue(3):422-427
引用本文:
第五强强, 张伟伟. 基于应变片的弹性体分布式位移测量方法[J]. 西北工业大学学报
Diwu Qiangqiang, Zhang Weiwei. Measurement of Distributed Displacement for Elastic Body Based on Strain Gauges[J]. Northwestern polytechnical university

基于应变片的弹性体分布式位移测量方法
第五强强, 张伟伟
西北工业大学 航空学院, 陕西 西安 710072
摘要:
位移测量是结构试验中非常重要的试验内容,很多结构试验迫切需要弹性体的分布式位移测量。当前,基于数字图像相关法的光学照相和激光位移计等非接触方法已成为位移测量的主要手段,但经常受到试验环境和测量条件的限制而无法使用。基于电阻应变片这一接触式测量方法的灵敏度高、测量精度高、测量范围广、自身尺寸和重量小等优点,发展了应变片在分布式位移测量中的应用,可以通过测量结构少数点的应变响应获得多个点甚至全场的位移响应。数值计算和试验设计结果均表明,该方法具有较高的测量精度和稳定性。
关键词:    弹性体    分布式位移    电阻应变片    应变响应    试验设计   
Measurement of Distributed Displacement for Elastic Body Based on Strain Gauges
Diwu Qiangqiang, Zhang Weiwei
School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
Abstract:
Displacement measurement is a very important content in structural tests. Many structural tests are in urgent need of distributed displacement of elastic body. At present, the non-contact methods, such as optical camera and laser displacement meter, have become the main methods of displacement measurement. However, these methods are often limited by the test environment and device conditions. Based on the advantages of high sensitivity, high measurement precision, wide measuring range, small size and small weight, the application of strain gauges in distributed displacement measurement is developed. It is possible to obtain the displacement response of multiple points and even the whole field by measuring the strain response of the structural minor point. Both the numerical calculation and the design of experiments results show that the method has a very high measurement accuracy and stability.
Key words:    elastic body    distributed displacement    resistance strain gauge    strain response    design of experiments   
收稿日期: 2016-09-15     修回日期:
DOI:
基金项目: 高等学校创新引智计划(B17037)资助
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作者简介: 第五强强(1991-),西北工业大学硕士研究生,主要从事气动弹性和伺服气动弹性研究。
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