The Dynamic Performance Analysis Model of EMS-MAGLEV System Utilizing Coupled Field-Circuit-Movement Finite Element Method

Using finite element method steady state and dynamic performance of a capillary compensated hydrostatic journal bearing have been investigated. For stability studies, the critical mass of the bearing system has been determined by Routh’s criterion. The locus of the journal center has been predicted by discretizing time and numerically integrating the equations of motion governing the journal bearing system.

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A Finite Element Method Approach to Modeling a Thermal-Electrical-Mechanical Coupled Field Contact

ASME/STLE 2011 Joint Tribology Conference ◽

10.1115/ijtc2011-61156 ◽

2011 ◽

Author(s):

R. P. Hennessy ◽

G. G. Adams ◽

N. E. McGruer

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Force Control ◽

Electrical Potential ◽

Hertzian Contact ◽

Displacement Control ◽

Macro Scale ◽

Coupled Field ◽

Method Approach ◽

Element Method

This paper presents a finite element method approach for modeling a thermal-electrical-mechanical coupled-field contact comprised of an elastic hemisphere and an elastic half space. The goal of this model is to develop a fundamental understanding of the behavior of a multi-physics contact with a particular interest in the contact area. The results from the model illustrate a clear difference in contact behavior between force control and displacement control in the presence of an applied electrical potential. It is shown that, while Hertzian contact theory can be used to accurately predict the behavior of the contact under force control, a new relationship must be established to accurately predict the behavior of the contact under displacement control. This relationship can be applied to RF MEMS switch contact bumps as well as macro scale electrical contacts.

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Transient Performance Analysis of Permanent Magnet Synchronous Motors Using the Finite Element Method. No load current obtained from starting performance analysis.

IEEJ Transactions on Industry Applications ◽

10.1541/ieejias.114.551 ◽

1994 ◽

Vol 114 (5) ◽

pp. 551-560 ◽

Cited By ~ 5

Author(s):

Kazumi Kurihara ◽

Genjiro Wakui ◽

Tomotsugu Kubota

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Performance Analysis ◽

Permanent Magnet ◽

Transient Performance ◽

The Finite Element Method ◽

Permanent Magnet Synchronous Motors ◽

Load Current ◽

Synchronous Motors ◽

Element Method

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Solving a coupled field problem by eigenmode expansion and finite element method

The International Journal of Multiphysics ◽

10.1260/175095407782219238 ◽

2007 ◽

Vol 1 (3) ◽

pp. 303-316 ◽

Cited By ~ 4

Author(s):

Bernd Baumann ◽

Marcus Wolff ◽

Bernd Kost ◽

Hinrich Groninga

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Field Problem ◽

Coupled Field ◽

Eigenmode Expansion ◽

Element Method

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Enriched degree of freedom locking in crack analysis using the extended finite element method

Advances in Mechanical Engineering ◽

10.1177/1687814019859793 ◽

2019 ◽

Vol 11 (6) ◽

pp. 168781401985979

Author(s):

Han-Soo Kim ◽

Geon-Hyeong Kim

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Extended Finite Element Method ◽

Degree Of Freedom ◽

Analysis Model ◽

Extended Finite Element ◽

Simple Method ◽

Numerical Examples ◽

Crack Analysis ◽

Element Method

In this article, the enriched degree of freedom locking that can occur in a crack analysis with the extended finite element method is described. The discontinuous displacement field formulated by the enriched degree of freedom in the extended finite element method does not activate due to the enriched degree of freedom locking. Using the phantom node method, the occurrence of locking when two adjacent elements are simultaneously cracked in a loading step was verified. Two adjacent cracks can be determined to have developed simultaneously when an analysis model reveals a relatively uniform stress distribution on two adjacent elements. Numerical examples of a simply tensioned bar and a reinforced concrete beam are presented to demonstrate the erroneous analysis result due to the enriched degree of freedom locking. As a simple method to circumvent the enriched degree of freedom locking, the tensile strength of the neighboring elements was slightly increased in the numerical examples, and the effectiveness of the method was demonstrated. The proposed method is simple and easy for practicing engineers, and it can be easily applied to the three-dimensional crack propagation analysis.

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ANSYS Application in Modal Analysis of Bus Body Frame

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.605-607.656 ◽

2012 ◽

Vol 605-607 ◽

pp. 656-659

Author(s):

Li Xu

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Modal Analysis ◽

Dynamic Performance ◽

Modal Parameters ◽

Body Frame ◽

Critical Problems ◽

Bus Body ◽

Element Method

Some critical problems of bus body frame during the modal analysis are presented by the principle of Finite Element Method. Then bus body frame is analyzed. After the modal parameters of the frame are obtained, dynamic performance of body frame is discussed to provide reference for the betterment of body frame dynamic performance design.

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