Magneto-mechanical model of ferromagnetic material under a constant weak magnetic field via analytical anhysteresis solution

被引:27
|
作者
Shi, Pengpeng [1 ,2 ,3 ]
机构
[1] Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Shaanxi, Peoples R China
[2] Xian Univ Architecture & Technol, Inst Mech & Technol, Xian 710055, Shaanxi, Peoples R China
[3] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Engn Res Ctr NDT & Struct Integr Evaluat, Xian 710049, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
HYSTERETIC CONSTITUTIVE MODEL; UNIAXIAL CYCLIC STRESS; MN PIPELINE STEEL; BEHAVIOR;
D O I
10.1063/5.0012580
中图分类号
O59 [应用物理学];
学科分类号
摘要
The magnetic memory non-destructive testing method can evaluate the early damage such as stress concentration based on the magneto-mechanical effect. Some magneto-mechanical models have been proposed and applied to the mechanism explanation and theoretical analysis of this non-destructive testing method. The present work constitutes a continuing study in questing for a new magneto-mechanical model that is very concise, accurate, and easy to calculate. By introducing a new magnetostrictive expression with a concise and clear physical meaning, a new magneto-mechanical model is proposed under a constant weak magnetic field based on the thermodynamic framework and approach law. Particularly, compared with existing models, an analytical expression of anhysteresis magnetization is obtained for the first time under a constant weak magnetic field, which greatly facilitates the understanding and application of the magneto-mechanical effect. In comparison with the classic Jiles's model, the prediction accuracy is improved greatly based on the present model, particularly for the compression case. A detailed study has also been performed to reveal the effect of cyclic loading on the magneto-mechanical behavior. The present theoretical model established in this paper is hopeful to improve quantitative understanding of magneto-mechanical effects for the magnetic memory method.
引用
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页数:11
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