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- Title
An I-integral method for the crack-tip intensity factor in ferromagnetic materials with domain switching.
- Authors
Shi, Yinuo; Yu, Hongjun; Wang, Jie
- Abstract
An I-integral method is developed to calculate the crack-tip stress intensity factors (SIFs) in the ferromagnetic thin plate subjected to the external loads. The value of I-integral is not affected by the integral area size, the magnetization distributions or domain walls, which shows the applicability to the large-scale domain switching. Based on the stress and magnetic field obtained from phase-field simulations, the I-integral method is successfully employed to obtain the crack-tip intensity factors and decouples different modes of the crack-tip intensity factors in ferromagnetic thin plates with an impermeable edge crack under different mechanical and/or magnetic loadings. The influence of domain switching on the SIFs is investigated for different loadings. It is found that domain switching under a constant stress loading increases the crack-tip intensity factors, whereas domain switching decreases the crack-tip intensity factors under a constant strain loading. The results indicate that the domain switching-induced shielding or anti-shielding of a crack in ferromagnetic materials with an impermeable edge crack is dependent on the loading condition.
- Subjects
FERROMAGNETIC materials; DOMAIN walls (String models); MAGNETIC fields; MAGNETIZATION; BLAST effect; PLATE
- Publication
Acta Mechanica, 2019, Vol 230, Issue 4, p1427
- ISSN
0001-5970
- Publication type
Article
- DOI
10.1007/s00707-017-2016-z