Due to the importance of the temperature factor in the testing precision of electric resistance strain gauge, this article conducts the simulation research on thermal output of the strain gauge by using Ansys.The paper makes a theoretical analysis of the technical problems of the thermal output, temperature compensation and measurement produced from the strain gauge under the abnormal temperature;it makes use of the steady-state thermal module and static structure module in Ansys Workbench to solve expansion coefficient of the thermal output of WK-05-125BZ-10C strain gauge;it combines the effects of Karma alloy on resistance-temperature coefficient in different temperatures to derive thermal output of the strain gauge.Research shows that the calculation results using Ansys are coincident with experimental ones preferably..The research results provide a theoretical basis for improvement, optimization and correction of strain gauge testing system and an extensive prospect of application to introduce simulation technique into strain gauge testing system.
YE Ying-xi, SUN Tian-he, AI Yan-ting
. Simulation study of temperature influence on testing precision of strain gauge[J]. Journal of Shenyang Aerospace University, 2013
, 30(2)
: 27
-31
.
DOI: 10.3969/j.issn.2095-1248.2013.02.007
[1]吴宗岱, 陶宝祺.应变电测原理及技术[M].北京:国防工业出版社, 1982.
[2]尹福炎.瞬态加热条件下高温应变计测量误差的修正方法[J].强度与环境, 2005(1):36-38.
[3]W.Lance Richards.Strain gage measurement errors in the transient heating of structural components[M].NASA Technical Memorandum, 104274, 1993.
[4]陈科山, 王燕.现代测试技术[M].北京:北京大学出版社, 2011.
[5]徐汉斌, 李如强, 江征风.测试技术实践[M].武汉:武汉理工大学出版社, 2010.
[6]P.Forquin.A testing technique for concrete under con nement at high rates of strain[J].International Journal of Impact Engineering, 2008(35):425-446.
[7]尹福炎.从型号命名看国外应变计的若干工艺特点[J].衡器, 1998(1):31-34.
[8]颜鸣皋, 刘伯操, 吴世平, 等.中国航空材料手册[M].北京:中国标准出版社, 2001.
[9]朱德芳, 李雪缘, 宋华鹏, 等.卡玛合金作箔式应变片材料的性能与组织研究[J].钢铁研究学院总院学报, 1983(5):217-218.
[10]Lance Richards W.A New Correction Technique for Strain-Gage Measurements Acquired in Transient-Temperature Environments[M].NASA Technical Paper 3593, 1996.
[11]尹福炎.高温应变计在瞬态加热条件下温度特性的实验研究[J].强度与环境, 2005(2):8-12.
