scholarly journals Equivalent circuit vs. finite element method approach in designing and modelling of magnetorheological clutch

2018 ◽  
Author(s):  
Paweł Kowol
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Equivalent Circuit ◽  
Method Approach ◽  
Element Method

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

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.

scholarly journals Numerical Simulation of Stress and Strain Behavior of Foundation Soil under Compensation Grouting

2021 ◽  
Vol 264 ◽  
pp. 03020
Author(s):  
Alexandra Bestuzheva ◽  
Ivan Chubatov
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
The Finite Element Method ◽  
Foundation Soil ◽  
Strain Behavior ◽  
Supplementary Volume ◽  
Method Approach ◽  
Element Method

To prevent the development of settlements and heave-up of facilities, the compensation grouting technique is used. The article reports the data of numerical simulation of the compensation grouting process as illustrated by the physical experiment performed by Luca Mazini, Ph.D. from La Sapienza Rome University (Rome, Italy). Simulation is performed with the JulyS program developed by the article authors for the ECM. The program implements the finite element method in a three-dimensional approach with Professor L.N.Rasskazov’s non-linear “energy” soil model. Different simulation of supplementary volume arrangement in the sandy soil under grouting in the finite element method approach is reviewed. The numerical simulation data are compared with the field experiment.

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