Research on Magnetomechanical Coupling Effect of Q235 Steel Member Specimens  

作　　者：熊二刚 王社良 苗晓瑜 

机构地区：[1]School of Civil Engineering,Chang'an University [2]School of Civil Engineering,Xi'an University of Architecture&Technology

出　　处：《Journal of Shanghai Jiaotong university(Science)》2012年第5期605-612,共8页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.51108035,51178388 and 10972168);the Natural Science Basic Research Plan in Shaanxi Province of China(No.2010JQ7006);the China Postdoctoral Science Foundation(No.20100481313);the Special Fund for Basic Scientific Research of Central College of China(No.CHD2012ZD012)

摘　　要：In this study,magnetomechanical coupling tests were performed on Q235 solid round steel model specimens in NIM-200HF magnetomechanical coupling equipment.Hysteresis loops were obtained in different magnetic fields and stresses.Magnetization curves were also achieved at different stresses.Influence of the applied stresses on the hysteresis loops was investigated.The stress sensitive region and linear stress sensitive region of magnetic induction were determined for the model specimen according to the experimental data.The dependence relation of magnetic induction versus applied stresses was established,and the optimum magnetic field was determined in the stress sensitive range of magnetic induction,which builds a basis for nondestructive testing(NDT) of stress with the total magnetic flux for steel structure.Based on modified Jiles-Atherton's model of magnetic hysteresis,the hysteresis loop for Q235 steel 4-mm diameter model specimen was numerically simulated,which was well consistent with the experimental results.In this study, magnetomechanical coupling tests were performed on Q235 solid round steel model specimens in NIM-200HF magnetomechanical coupling equipment. Hysteresis loops were obtained in different magnetic fields and stresses. Magnetization curves were also achieved at different stresses. Influence of the applied stresses on the hysteresis loops was investigated. The stress sensitive region and linear stress sensitive region of magnetic induction were determined for the model specimen according to the experimental data. The dependence relation of magnetic induction versus applied stresses was established, and the optimum magnetic field was deter- mined in the stress sensitive range of magnetic induction, which builds a basis for nondestructive testing （NDT） of stress with the total magnetic flux for steel structure. Based on modified Jiles-Atherton＇s model of magnetic hysteresis, the hysteresis loop for Q235 steel 4-mm diameter model specimen was numerically simulated, which was well consistent with the experimental results.

关 键 词：magnetomechanical coupling tests magnetic hysteresis loops stress sensitive region magnetic induction total magnetic flux nondestructive testing(NDT) magnetic hysteretic model 

分 类 号：TU375[建筑科学—结构工程]