P. Goes, E. Hoferlin, and M. De Wulf
OCAS N.V. – ArcelorMittal Research Gent, Belgium
Finite element modelling of electrical machines usually assumes uniform magnetic properties and loss behaviour throughout the steel laminations. It is well known that manufacturing processes, like the assembly of the machine, deteriorate the properties of the core material. Generally, the measured iron losses in the machine are higher than the losses obtained under standard conditions. Taking ...
Study of Thermo-Electrical and Mechanical Coupling During Densification of a Polycrystalline Material Using COMSOL
F. Mechighel[1,2,3], B. Pateyron, M. El Ganaoui, and M. Kadja
CNRS SPCTS UMR 6638, Universite de Limoges, France
Département de Génie Mécanique, Universite de Annaba, Algerie
Département de Génie Mécanique, Universite de Constantine, Algerie
Spark Plasma Sintering (SPS) is a promising rapid consolidation technique that allows a better understanding and manipulation of sintering kinetics and therefore makes it possible to obtain polycrystalline materials (ceramic or metallic) with tailored microstructures. A numerical simulation of the electrical, thermal and mechanical coupling during SPS is performed. Equations for conservation for ...
A. Chanda, A.R. Choudhury, G. Ray, K. Dasgupta, and D. Nag
Jadavpur University, Kolkata, West Bengal, India
Atherosclerosis in arteries is caused by the formation of stenosis : fatty depositions, on the artery wall. In current medicine, the practice is to observe the maximum percentage occlusion at any arbitrary cross-section and diagnose the patient on that basis, which might not always present the real picture due to non-uniformity of the stenosis thickness. The present work attempts to simulate the ...
K. Suresh, B.V.M.P.S. Kumar, U.V. Kumar, M. Umapathy, and G. Uma
National Institute of Technology Tiruchirapalli, Tamil Nadu, India
A proximity DC current sensor using of a piezo sensed and actuated cantilever beam with a permanent magnet mounted at its free end is designed and simulated in COMSOL Multiphysics. The change in resonant frequency of cantilever is a measure of the current through the wire. The sensor is found to be linear with good sensitivity.
S.L. Firebaugh, E.A. Leckie, J.A. Piepmeier, and J.A. Burkhardt
United States Naval Academy, Annapolis, Maryland, USA
Microrobotics has promising applications in microsurgery and microassembly. A challenge in these systems is interfacing with the robot. This project explores crawling robots that are powered and controlled through a global mechanical vibration field. By controlling the frequencies present in the vibration field, the user can then steer the robot. The “robot” has a rectangular body with ...
D. Gasperino , O. Yildirim
Intellectual Ventures, Bellevue, WA, USA
In 2010 an estimated 109 million infants were immunized against DTP, which serves as a good proxy for vaccinations in general. At the same time, however, approximately 19.3 million infants worldwide were not reached by routine DTP immunization services. Immunization rates tend to be lowest in areas where poor infrastructure and limited access to electricity can cause vaccine stock-outs and high ...
Charakterisierung einer magnetorheologischen Flüssig-keit für die Innenhochdruck-Umformung von Rohren
Dal Bó, P., Blankl, A., Geiger, M.
Universität Erlangen-Nürnberg, Lehrstuhl für Fertigungstechnologie, Erlangen, Deutschland
Bei der Innenhochdruck-Umformung von Rohren findet die Umformung durch eine Kombination aus Aufweiten und Stauchen statt. Aufgrund des Innendrucks und der daraus resultierenden Reibung zwischen Werkzeug und Werkstück erfolgt bei einem sehr langen Rohr kein weiteres Nachschieben in die Aufweitzone, sondern lediglich ein Aufstauchen in der Führungszone. Mit Hilfe der Strömung eines hochviskosen ...
Contino, A.1, Feldheim, V.1, Lybaert, P.1, Deweer, B,2, Cornil, H.2
1 Faculty of Engineering – Thermal Engng. & combustion Lab., Mons – Belgium
2 Arcelor Innovation, Liège, Belgium
The self-induced ion plating (SIIP) process is a new physical vapor deposition process based on the evaporation of a metallic target (i.e. tin) thanks to a magnetron sputtering system. The aim of this work is to develop a numerical simulation model of the SIIP process in order to predict the target temperature field and from it, the coating profile on the substrate. The simulation of the SIIP ...
A. Hallgarth, A. Zayer, A. Gatward, and J. Davies
Hazard Research & Risk Consultants Ltd, Aberystwyth, Wales, United Kingdom
Independent Consultants, United Kingdom
This paper presents and discusses HazRes’ research and results associated with the simulation and modelling of hydrogen release and dispersion events in indoor enclosed environments, using COMSOL Multiphysics. HazRes has developed a gas dispersion model in COMSOL, which takes into account the effects of buoyancy, localized ventilation effects and turbulence generated by obstacles on the ...
A. Atalla, and A. Jeremic
McMaster University, Hamilton, Ontario, Canada
The inverse diffusion problems deal with the estimation of many crucial parameters such as the diffusion coefficient, source properties, and boundary conditions. Such algorithms are widely applied in many design problems in different physical, chemical, and biological fields. Recently, the estimation of the boundary properties, of the diffusion process, have attracted researchers. We first ...