3D finite element simulation and synthetic tests of vacuum interrupters with axial magnetic field contacts

2003 ◽  
Author(s):  
A. Henon ◽  
T. Altimani ◽  
P. Picot ◽  
H. Schellekens
Keyword(s):  
Magnetic Field ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Axial Magnetic Field ◽  
3D Finite Element ◽  
Element Simulation

Study of the effect of the demagnetizing field in Epstein strips of grain-oriented electrical steels through 3D finite element analysis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Leysmir Adriana Millan Mirabal ◽  
Oualid Messal ◽  
Abdelkader Benabou ◽  
Yvonnick Le Menach ◽  
Loic Chevallier ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Three Dimensional ◽  
Element Analysis ◽  
Electrical Steels ◽  
3D Finite Element ◽  
Content Type ◽  
Demagnetizing Field ◽  
Element Simulation

Purpose The purpose of this study is to explore the effect of the demagnetizing field in the Epstein characterization of grain-oriented electrical steels through a finite element method (FEM) simulations. Design/methodology/approach A 3D finite element simulation has been realized to represent the parallel and X-stacking configurations in the Epstein frame. The numerical results have been compared with experimental measures. Findings In a parallel configuration, the measured induction is actually the one in the material, whereas the resulting magnetic field differs from the applied one (in magnitude and angle) due to the shape anisotropy (demagnetizing field). In X-stacking configuration, the resulting magnetic field is close to the applied magnetic field (and then the supposed excitation field in the Epstein frame), whereas the magnetic induction has deviated from the axis of the strips. Originality/value Both stacking configurations (parallel and cross) of the Epstein frame are analyzed by three-dimensional finite element simulation.

3D Finite Element Simulation for Turning of Hardened 45 Steel

2019 ◽  
Vol 13 (2) ◽  
pp. 181-188
Author(s):  
Meng Liu ◽  
Guohe Li ◽  
Xueli Zhao ◽  
Xiaole Qi ◽  
Shanshan Zhao
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Cutting Force ◽  
Finite Element Simulation ◽  
Orthogonal Experiment ◽  
Element Model ◽  
3D Finite Element ◽  
Element Simulation ◽  
Metal Machining ◽  
Single Factor Experiment

Background: Finite element simulation has become an important method for the mechanism research of metal machining in recent years. Objective: To study the cutting mechanism of hardened 45 steel (45HRC), and improve the processing efficiency and quality. Methods: A 3D oblique finite element model of traditional turning of hardened 45 steel based on ABAQUS was established in this paper. The feasibility of the finite element model was verified by experiment, and the influence of cutting parameters on cutting force was predicted by single factor experiment and orthogonal experiment based on simulation. Finally, the empirical formula of cutting force was fitted by MATLAB. Besides, a lot of patents on 3D finite element simulation for metal machining were studied. Results: The results show that the 3D oblique finite element model can predict three direction cutting force, the 3D chip shape, and other variables of metal machining and the prediction errors of three direction cutting force are 5%, 9.02%, and 8.56%. The results of single factor experiment and orthogonal experiment are in good agreement with similar research, which shows that the model can meet the needs for engineering application. Besides, the empirical formula and the prediction results of cutting force are helpful for the parameters optimization and tool design. Conclusion: A 3D oblique finite element model of traditional turning of hardened 45 steel is established, based on ABAQUS, and the validation is carried out by comparing with experiment.

Stress analysis of perforated graphene nano-electro-mechanical (NEM) contact switches by 3D finite element simulation

2017 ◽  
Vol 24 (2) ◽  
pp. 1179-1187 ◽  
Author(s):  
Mohd Amir Zulkefli ◽  
Mohd Ambri Mohamed ◽  
Kim S. Siow ◽  
Burhanuddin Yeop Majlis ◽  
Jothiramalingam Kulothungan ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Finite Element Simulation ◽  
3D Finite Element ◽  
Element Simulation

Simulation research on low frequency sound absorption of monostable metamaterials

2021 ◽  
Vol 263 (6) ◽  
pp. 648-652
Author(s):  
Tuo Xing ◽  
Xianhui Li ◽  
Xiaoling Gai ◽  
Zenong Cai ◽  
Xiwen Guan
Keyword(s):  
Magnetic Field ◽  
Finite Element ◽  
Theoretical Model ◽  
Finite Element Simulation ◽  
Sound Absorption ◽  
Magnetic Force ◽  
Low Frequency ◽  
Low Frequencies ◽  
Element Simulation ◽  
Simulation Results

The monostable acoustic metamaterial is realized by placing a flexible panel with a magnetic proof mass in a symmetric magnetic field. The theoretical model of monostable metamaterials has been proposed. The method of finite element simulation is used to verify the theoretical model. The magnetic force of the symmetrical magnetic field is simplified as the relationship between force and displacement, acting on the mass. The simulation results show that as the external magnetic force increases, the peak sound absorption shifts to low frequencies. The theoretical and finite element simulation results are in good agreement.

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