Finite element diagnosis of rotor faults in induction motors based on low frequency harmonics of the near-magnetic field

2011 ◽  
Author(s):  
A. Ceban ◽  
V. Fireteanu ◽  
R. Romary ◽  
R. Pusca ◽  
P. Taras
Keyword(s):  
Magnetic Field ◽  
Finite Element ◽  
Induction Motors ◽  
Low Frequency ◽  
Rotor Faults

Time-Domain Parallel Finite-Element Method for Fast Magnetic Field Analysis of Induction Motors

2013 ◽  
Vol 49 (5) ◽  
pp. 2413-2416 ◽  
Author(s):  
Yasuhito Takahashi ◽  
Tadashi Tokumasu ◽  
Masafumi Fujita ◽  
Takeshi Iwashita ◽  
Hiroshi Nakashima ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Time Domain ◽  
Induction Motors ◽  
Field Analysis ◽  
Magnetic Field Analysis ◽  
Parallel Finite Element ◽  
Element Method

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.

Numerical Simulation of SAW Heat Source in the External Longitudinal Magnetic Field in 16Mn Steel

2013 ◽  
Vol 762 ◽  
pp. 584-589 ◽  
Author(s):  
Yun Long Chang ◽  
Lin Lu ◽  
Xiao Long Liu ◽  
Bo Young Lee
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Finite Element ◽  
Heat Source ◽  
Longitudinal Magnetic Field ◽  
Assembly Language ◽  
Low Frequency ◽  
Element Model ◽  
Element Analysis ◽  
Weld Bead Formation

The finite element analysis on temperature field and stress field during submerged-arc welding (SAW) was carried out by means of assembly language of FORTRAN on the base of ABAQUS. A finite element model was established to study the effects on weld bead formation by using longitudinal magnetic field of low-frequency and different process parameters loaded with moving heat source. A practical SAW experiment was conducted to verify the results of the numerical simulation. It was shown that a molten pool with a wider weld face and a lower penetration could be obtained by the control of longitudinal magnetic field of low-frequency. In addition, the fusion line after this treatment was smoother than with conventional SAW. The results of practical SAW experiment were consistent with those of the numerical simulation. It was confirmed that the longitudinal magnetic field of low-frequency could contribute in diminishing the dilution rate and improving the performance of surfacing layers.

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