Scattering of Magnetoacoustic Waves and Dynamic Stress Concentration around Double Openings in Piezomagnetic Composites
Abstract
:1. Introduction
2. The Incidence of Magnetoacoustic Wave and the Total Magnetic Wave Field
3. Boundary Conditions and Mode Coefficients for Double Openings
4. Dynamic Stress Concentration Factor
5. Numerical Examples and Discussion
6. Conclusions
- (1)
- The opening spacing and the physical parameter of the e-type piezomagnetic composites have great influence on the dynamic stress concentrations. A great physical parameter, , will cause a reduction of the dynamic stress concentrations. It indicates that piezomagnetic parameters increase the hardness of the materials. The opening spacing influences the density of the stress diagram under different physical parameters, . When the incident wave number is large, different physical parameters cause the curve spacing greater.
- (2)
- When the wave number is constant, the maximum value of the dynamic stress concentration factor changes with the opening spacing. When the opening spacing is small, the effect of the opening spacing on the dynamic stress concentration factor is very large. When the spacing between the two openings is large, the influence of the spacing on the dynamic stress concentration factor is weakened. When the distance between the two openings is infinite, the dynamic stress concentration factor of the two openings is almost the same as that of the single opening, and the dynamic stress concentration factor is no longer affected by the adjacent opening.
- (3)
- When the opening spacing is constant, with the increasing number of waves, the distance between the two openings on the dynamic stress concentration factor is increasing. The wave incident wave numbers greatly influence the value and distribution of the dynamic stress concentration factors around the openings. In contrast to the solution in the static case, analyses show that the piezomagnetic properties have great effect on the dynamic stress in the region of intermediate frequency. A larger incident wave frequency can enhance the piezomagnetic effects on the dynamic stress concentration.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Xue, H.; Zhou, C.; Cheng, G.; Bao, J.; Wang, M.; Gong, Y.; Ji, H.; Yang, W.; Hou, B.; Zhou, W.; et al. Scattering of Magnetoacoustic Waves and Dynamic Stress Concentration around Double Openings in Piezomagnetic Composites. Materials 2021, 14, 6878. https://doi.org/10.3390/ma14226878
Xue H, Zhou C, Cheng G, Bao J, Wang M, Gong Y, Ji H, Yang W, Hou B, Zhou W, et al. Scattering of Magnetoacoustic Waves and Dynamic Stress Concentration around Double Openings in Piezomagnetic Composites. Materials. 2021; 14(22):6878. https://doi.org/10.3390/ma14226878
Chicago/Turabian StyleXue, Huanhuan, Chuanping Zhou, Gaofei Cheng, Junqi Bao, Maofa Wang, Yongping Gong, Huawei Ji, Wu Yang, Bo Hou, Weihua Zhou, and et al. 2021. "Scattering of Magnetoacoustic Waves and Dynamic Stress Concentration around Double Openings in Piezomagnetic Composites" Materials 14, no. 22: 6878. https://doi.org/10.3390/ma14226878