Determination of the Stress and Strain States in Metallic Structures using Piezoelectrical Transducers
D. Popovici, V. Paltânea, G. Paltânea, and G. Jiga
University of Bucharest
In this paper, we present a modern non-destructive method, using COMSOL Multiphysics, for the evaluation of the stress and strain states in metallic structures. This method can be successfully applied in civil engineering, installations or in structures where the determination of stress state can ot be realized by conventional method.
Department of Mechatronics and Electronics, Faculty of Electrical Engineering, University of Žilina
The paper presents results of energy radiation from a point source, which is situated in a metal case with a quadrangular opening. The opening is shielded with a transparent metal grid to prevent the leakage of electromagnetic field. The cases with and without the grid are simulated.
Institute of Applied Mechanics, Poznan University of Technology, Poland
The viscous, two-dimensional, incompressible and laminar time dependent heat transfer flow through a ferromagnetic fluid is considered in this paper. Flow takes place in channel between two porous walls under the influence of the magnetic dipole located beyond the channel. Results are obtained using standard computational fluid dynamics code in COMSOL with modifications to account for ...
A. Kara, Ö. Kalenderli, and K. Mardikyan
Istanbul Technical University, Turkey
The rod-plane gap is extensively used for studies on the breakdown characteristics of gases. In this study, influence of a dielectric barrier on the electric field and potential distributions in a vertically arranged rod-plane gap was numerically analysed by using the finite element method. Maximum field in the gap was examined for different gap distances, size and material of the ...
Technical University of Liberec, Czech Republic
The paper presents an implementation in COMSOL Multiphysics of Holzapfel's material model for the viscoelastic stress response of carbon-black filled rubber at large strains. The simulation uses the Structural Mechanics Module finite strain formulation based on the material configuration with the right Cauchy-Green tensor as a strain measure. The time independent response of the rubber is ...
AGH University of Science and Technology, Krakow, Poland
A two dimensional model of a three-coil Active Magnetic Bearing (AMB) is considered where effects associated with stator and shaft lengths are omitted. The performed analysis plays an important role in the design procedures of AMB and helps in the verification of the construction assumptions.
Akadémia ozbrojených síl, Liptovský Mikuláš
Both electromagnetic and thermal energy have influences on composite electronic machines. COMSOL Multiphysics has the tools for non-destructive EMC valuation. Simulated microwave owen and TEM models were field tested and the simulated results are comparable with real measurements.
M. Pribyl, and D. Snita
Department of Chemical Engineering, Institute of Chemical Technology, Prague
Two mathematical models of the electrokinetic flow are presented where the electroosmotic flow is induced by the interaction of a surface electric charge with a perpendicularly imposed electric field. In order to solve such problems, an anisotropic mesh of rectangular finite elements is developed. Stationary distributions of the model variables are computed for various sets of model ...
Baltic State Fishing Fleet Academy, Kaliningrad, Russia
Flow speeds and pressures distribution in/around a fishing net structures is caused by strong influences of hydrodynamic fields on the shape of trawl elements, acting forces, fish behavior and, finally, on catchability of fishing gears. This paper presents a way to describe these phenomena, by use of COMSOL Multiphysics.
A.M. Morega, J.C. Ordonez, P.A. Negoias, M. Morega, and R. Hovsapian
This paper reports the optimization results of the new generation of honeycomb spherical photovoltaic cells (SPVC) with respect to the series electrical resistance. The electrical potential (voltage) distribution is found by numerically integrating the mathematical model of the DC current distribution within the SPVC. --------------------------------- Keynote speaker's ...