An Electromagnetic Field and Electric Circuit Coupled Method for Solid Conductors in 3-D Finite-Element Method

2016 ◽  
Vol 52 (3) ◽  
pp. 1-4 ◽  
Author(s):  
W. N. Fu ◽  
Yanpu Zhao ◽  
S. L. Ho ◽  
Ping Zhou
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Electric Circuit ◽  
Coupled Method ◽  
Solid Conductors ◽  
Element Method

scholarly journals Bearing Fault Analysis in Induction Motor Drives Using Finite Element Method

2018 ◽  
Vol 7 (3.6) ◽  
pp. 30 ◽  
Author(s):  
C Vinothraj ◽  
N Praveen Kumar ◽  
T B. Isha
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Induction Motor ◽  
Flux Density ◽  
Air Gap ◽  
Voltage Source ◽  
Pwm Inverter ◽  
Bearing Fault ◽  
Element Method

Diagnosis of faults in induction motor is an indispensable process in industries to improve the reliability of the machine and reduce the financial loss. Among the various faults occurring in induction motors (IM), bearing fault is the predominant one which covers nearly 60% of faults. In this paper, a study of the electromagnetic field of an induction motor with bearing fault fed from both the mains and a three phase voltage source PWM inverter in open loop is carried out using Finite element method (FEM). Electromagnetic field parameters like flux lines distribution, flux density distribution and radial air gapflux density are analyzed. The presence of bearing fault can be detected from the spatial FFT spectrum of radial air gap flux density. From the FFT spectrum, it is seen that the amplitude of fundamental component of radial air gap flux density decreases and those around 100 mm distance increases with the severity of fault.  

Computation on transient nonlinear electromagnetic field by an improved space-time finite element method

1999 ◽  
Vol 35 (3) ◽  
pp. 1426-1429 ◽  
Author(s):  
Tang Renyuan ◽  
Lin Feng ◽  
Guo Zhenhong ◽  
Li Yan ◽  
Ma Jianguo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Space Time ◽  
Element Method

AN APPLICATION OF THE ES-FEM IN SOLID DOMAIN FOR DYNAMIC ANALYSIS OF 2D FLUID–SOLID INTERACTION PROBLEMS

2013 ◽  
Vol 10 (01) ◽  
pp. 1340003 ◽  
Author(s):  
T. NGUYEN-THOI ◽  
P. PHUNG-VAN ◽  
T. RABCZUK ◽  
H. NGUYEN-XUAN ◽  
C. LE-VAN
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Analysis ◽  
Smoothing Technique ◽  
Coupled Method ◽  
Gradient Smoothing Technique ◽  
Triangular Elements ◽  
Gradient Smoothing ◽  
Fluid Solid Interaction ◽  
Element Method

An edge-based smoothed finite element method (ES-FEM-T3) using triangular elements was recently proposed to improve the accuracy and convergence rate of the existing standard finite element method (FEM) for the solid mechanics analyses. In this paper, the ES-FEM-T3 is further extended to the dynamic analysis of 2D fluid–solid interaction problems based on the pressure-displacement formulation. In the present coupled method, both solid and fluid domain is discretized by triangular elements. In the fluid domain, the standard FEM is used, while in the solid domain, we use the ES-FEM-T3 in which the gradient smoothing technique based on the smoothing domains associated with the edges of triangles is used to smooth the gradient of displacement. This gradient smoothing technique can provide proper softening effect, and thus improve significantly the solution of coupled system. Some numerical examples have been presented to illustrate the effectiveness of the proposed coupled method compared with some existing methods for 2D fluid–solid interaction problems.

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