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The aim of the International Journal of Applied Electromagnetics and Mechanics is to contribute to intersciences coupling applied electromagnetics, mechanics and materials. The journal also intends to stimulate the further development of current technology in industry. The main subjects covered by the journal are:
- Physics and mechanics of electromagnetic materials and devices
- Computational electromagnetic in materials and devices
- Applications of electromagnetic fields and forces
The three interrelated key subjects - materials, electromagnetics and mechanics - include the following aspects: control, micromachines, intelligent structure, inverse problem, eddy current analysis, electromagnetic NDE, magnetic materials, magnetoelastic effects in materials, bioelectromagnetics, magnetosolid mechanics, magnetic levitations, applied physics of superconductors, superconducting magnet technology, superconducting propulsion system, nuclear fusion reactor components and wave propagation in electromagnetic fields.
Authors: Lv, Pin | Ma, Haotian | Su, Xunwen | Xu, Donghui | Liu, Ziyang | Liu, Lulu
Article Type: Research Article
Abstract: In order to weaken the torque ripple caused by cogs torque and increase the output torque of permanent magnet synchronous motor, this paper proposes a multi-objective optimization method of permanent magnet synchronous motor based on Improved Multi-Objective Salp Swarm Optimization Algorithm (IMOSSA) and Spearman correlation analysis. Firstly, the improved strategy of Multi-Objective Salp Swarm Algorithm (MOSSA) was proposed, and the effectiveness of the improved algorithm was further verified by the performance test of the algorithm. Then, the motor simulation model was established, and the high correlation parameters were filtered out by Spearman correlation analysis. The response surface model was established …by Response Surface Method (RSM), and the regression equation was given. The IMOSSA was used for iterative optimization. Through optimization, the experimental results show that under the premise of meeting the efficiency design requirements, the average output torque of the motor is increased by 21.35%, the torque ripple and cogging torque are reduced by 45.04% and 39.17% respectively, which verifies the effectiveness and feasibility of the proposed method. Show more
Keywords: Permanent magnet motor, multi-objective optimization, spearman correlation analysis, Improve Multi-Objective Salp Swarm Algorithm
DOI: 10.3233/JAE-230121
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. Pre-press, no. Pre-press, pp. 1-19, 2024
Authors: Yue, Qiming | Yang, Panpan | Li, Zixuan | Wen, Yongshuang | Zhang, Leian
Article Type: Research Article
Abstract: The critical speed of eddy current braking is a vital parameter in the design of eddy current braking devices. Currently, most simulations and experiments are used to determine the critical speed, which means a lot of time costs. This paper presents two laws of critical speed variation to help designers more quickly determine the critical speed of a particular eddy current braking device. At first, the structure and the critical speed principle of permanent magnet rotary eddy current brake (PMRECB) are described. Secondly, the finite element analysis is used to verify the accuracy of the two laws. Finally, the validity …of the finite element model is confirmed by the eddy current braking test. Show more
Keywords: Permanent magnet rotary eddy current brake (PMRECB), conductor plate conductivity, PMRECB size, critical speed, finite element analysis
DOI: 10.3233/JAE-230292
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. Pre-press, no. Pre-press, pp. 1-12, 2024
Authors: Wei, Yanqun | Zhang, Jingjing | Hu, Qiang | Ma, Lizhen | Yao, Zeen | Yang, Jing | Jin, Lian | Yao, Qinggao
Article Type: Research Article
Abstract: As one of the key components of synchrotron injection and extraction system, the perturbation of the beam generated by the septum magnet in the non-deflection direction will directly affect the orbit matching of the injected and extracted beam. Reducing the leakage field during the development of the septum magnet is a crucial one. Based on the theory of electromagnetic field, the leakage field analysis of septum magnet was carried out by using the electromagnetic field analysis software-Opera. In order to reduce the leakage field, the variation of the leakage field with different shielding structures were analyzed, and the shielding structure …was optimized by using the parametric scanning finite element numerical calculation optimization method. Eventually, a leakage field shielding structure with multilayer metal plate combination was proposed, which significantly reduced the leakage field of the septum magnet. Furthermorethe magnetic field and leakage field were measured by using the Hall probe, and the measurement results are in good agreement with the numerical simulation results. Show more
Keywords: Septum magnet, leakage field, magnetic shielding, structural design, optimization analysis
DOI: 10.3233/JAE-230078
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. Pre-press, no. Pre-press, pp. 1-13, 2024
Authors: Zhao, Shuai | Xu, Xinjun | Bi, Yaxuan
Article Type: Research Article
Abstract: Taking the surface profile of C45 steel grinding as the research object, a two-dimensional finite element contact model of rough surface and smooth rigid surface was established by using ANSYS software, and the stress distribution characteristics and rules of contact surface were analyzed under 0–10 MPa normal load. On this basis, the force-magnetic coupling model was established by using ANSYS APDL language. Furthermore, the influence of stress under on leakage magnetic field of contact surface under different load conditions was studied. The results indicated that according to the zero-crossing point of the normal component of the leakage magnetic field or the …extreme point of the tangential component, the number of stress concentrations on the contact surface and the stress level of the corresponding area can be effectively determined. This innovative approach offers valuable insights for future studies on surface contact stress distribution between components. Show more
Keywords: Rough surface, surface contact property, finite element method, stress-magnetization effect
DOI: 10.3233/JAE-230407
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. Pre-press, no. Pre-press, pp. 1-10, 2024
Authors: Zhao, Hanyu | Zhang, Yueyue | Tu, Jianjian | Zheng, Fan | Li, Jiale
Article Type: Research Article
Abstract: The coupling of magnetic, thermal and structural force fields exists in the design, manufacture and operation of the magnetic core of transformer and motor, which makes the experimental data obtained from the standard magnetic properties measurement inconsistent with the actual problem. In order to obtain the magnetic properties measurement data of soft magnetic materials such as electrical steel sheet under multiple physical factors, the magnetic circuit structure was improved on the basis of the standard single sheet tester. At the same time, anti-bending clips made of polyether ether ketone were installed in order to prevent the bending deformation of the …sample sheet during the application of tensile stress which would lead to uneven force. Then0 this basic structure of the tester under the coupling of temperature and stress is designed. In order to further improve the excitation performance of the tester and the magnetization uniformity of the sample, combined with COMSOL and MATLAB co-simulation, adaptive genetic algorithm was used to optimize the size of the yoke and excitation coil, thereby ensuring the uniformity of the magnetic field distribution in the measurement area of the sample. Finally, by combining simulation and specific experiments, the loss measurement results of a single sheet tester under different ambient temperatures and different stresses are studied, which proves that the tester is feasible and accurate, and the variation law of complex magnetic characteristics of electrical steel sheets under multiple physical fields is summarized. Show more
Keywords: Single sheet tester, multiple physical factors, adaptive genetic algorithm, COMSOL, MATLAB
DOI: 10.3233/JAE-230162
Citation: International Journal of Applied Electromagnetics and Mechanics, vol. Pre-press, no. Pre-press, pp. 1-17, 2024
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