TY - JOUR
T1 - A study on influence of strong magnetic field on fracture of interface crack considering magneto-elastic coupling effects
AU - Xie, Zheng
AU - Zhao, Yinsong
AU - Li, Qun
AU - Chen, Zhenmao
AU - Uchimoto, Tetsuya
AU - Takagi, Toshiyuki
N1 - Funding Information:
This work was supported in part by the National Key Research and Development Program of China under Grant 2017YFF0209703 and the National Science Foundation of China under Grant 51577139.
Publisher Copyright:
© 2020 - IOS Press and the authors. All rights reserved.
PY - 2020
Y1 - 2020
N2 - The influence of strong magnetic field on stress intensity factor of an interface crack is studied in this paper. The nonlinear piezomagnetic property and magnetostriction effect have been taken into consideration in the theoretical analyses. This multi-field coupled problem is solved through a sequential coupling approach. The perturbed magnetization caused by the deformation around the crack is solved under magnetic boundary conditions. After modified by the perturbed magnetization, the initial loads are updated with magnetic forces for iterative calculation. With this strategy, the distributions of the stress and displacement at the crack region approach to the real solution gradually. Numerical results show that the influence of the external magnetic field on fracture behaviors is not ignorable. For structures with interface crack serving in a strong magnetic field, e.g., the multi-layer welded structures in the Tokamak device, the magneto-elastic coupling effects have to be considered to deal with its fracture problem.
AB - The influence of strong magnetic field on stress intensity factor of an interface crack is studied in this paper. The nonlinear piezomagnetic property and magnetostriction effect have been taken into consideration in the theoretical analyses. This multi-field coupled problem is solved through a sequential coupling approach. The perturbed magnetization caused by the deformation around the crack is solved under magnetic boundary conditions. After modified by the perturbed magnetization, the initial loads are updated with magnetic forces for iterative calculation. With this strategy, the distributions of the stress and displacement at the crack region approach to the real solution gradually. Numerical results show that the influence of the external magnetic field on fracture behaviors is not ignorable. For structures with interface crack serving in a strong magnetic field, e.g., the multi-layer welded structures in the Tokamak device, the magneto-elastic coupling effects have to be considered to deal with its fracture problem.
KW - Magnetoelastic
KW - interface crack
KW - magnetostriction effect
KW - stress intensity factor
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U2 - 10.3233/JAE-209367
DO - 10.3233/JAE-209367
M3 - Article
AN - SCOPUS:85097884216
SN - 1383-5416
VL - 64
SP - 581
EP - 588
JO - International journal of applied electromagnetics in materials
JF - International journal of applied electromagnetics in materials
IS - 1-4
ER -