A. Polit, R. Jez
ABB Corporate Research Center, Krakow, Poland
The air gap is one of the most crucial part of magnetic circuits, especially in high-power inductors. It significantly modifies the parameters of magnetic devices by increasing the saturation current, linearizing B-H curve of magnetic circuit and causing a decreasing in the inductance. Therefore the optimal selection of shape and dimensions of the air gap is very important from the design point ...
O. Vogel, and J. Ulm
Proportional solenoids are well-known and used in a wide range of applications today. This paper is about methods of influencing the characteristic force-stroke-curves of magnetic actuators by means of different pole geometries. The conical design of the stator pole which is mostly used to accomplish proportional solenoids is analyzed by both a simple analytic reluctance model and a FEM model ...
Multiphysics Simulation of Thermoelectric Systems - Modeling of Peltier-Cooling and Thermoelectric Generation
Fraunhofer-Institute for Physical Measurement-Techniques (IPM), Freiburg, Germany
Electro-thermal interaction is commonly considered only as a matter of joule heating. In addition, the Seebeck-, Peltier- and Thompson-Effects are significant in materials with high thermoelectric figure of merit Z. These thermoelectric materials have a high Seebeck-coefficient α, a good electric conductivity σ, and a poor thermal conductivity λ. They have widespread areas of ...
M. Puskarczyk, R. Jez 
ABB Corporate Research Center, Krakow, Poland
Multilayer planar transformers are widely implemented in power electronic applications. The design process of these elements is complicated due to the complexity of a magnetic circuit and high frequency interactions between windings. Additionally, an analytical approach to the analysis (based on mathematical formulas) can be uncertain. The applied FEM method of the analysis can be a solution to ...
J. Xi, Z. Zhang, X. Si, H. Nanda, A. Ayoola
Mechanical & Biomedical Engineering, Central Michigan University, Mt. Pleasant, MI, USA
Mechanical Engineering, California Baptist University, Riverside, CA, USA
Calvin College, Grand Rapids, MI, USA
1. It is feasible to focus and guide nanoparticles with permanent magnets and ferromagnetic particles to achieve clinically significant olfactory dosages. 2. With appropriate magnetophoretic guidance and selective drug release, an olfactory delivery efficiency of more than 20% can be achieved. 3. The optimal particle size range for magnetophoretic guidance is 10−15 µm.
S. Meenatchisundaram, S. M. Kulkarni, S. Bhat
Department of Instrumentation and Control Engineering, Manipal Institute of Technology, Manipal, Karnataka, India.
Department of Mechanical Engineering, National Institute of Technology, Surathkal, Karnataka, India.
Piezoresistive pressure sensors have received much attention over the years because of low cost, simple measurement techniques, etc. There is a challenge in design with respect to appropriate positioning, shape and temperature compensation. Different models of piezoresistive pressure sensors are proposed to enhance its sensitivity in terms of output voltage. This paper aims in sensitivity ...
Electrical Conductivity Modeling and Validation in Unidirectional Carbon Fiber Reinforced Polymer Composites
P. Banerjee, J. L. Schmidt
Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO, USA
Carbon fiber (CF) reinforced polymer composites (CFRP) have begun to replace Al-Zn-Mg alloys in applications which require high strength-to-weight ratios. The anisotropy of CFRP composites is a result of melt crystallized extrusion techniques that impart an inherent directionality to the CFs and the associated material’s properties. Electrical conductivity was modeled across the entire CF ...
Electro-Stimulating Implants for Bone Regeneration: Parameter Analysis on Design and Implant Position
Y. Su, R. Souffrant, D. Klüß, R. Bader, M. Ellenrieder, and H. Ewald
Department of Orthopaedics, University of Rostock, Rostock, Germany
Department of General Electrical Engineering, University of Rostock, Rostock, Germany
A common clinical treatment is the application of alternating electromagnetic fields using a screw implant to the weak bone tissue within the femoral head, which speed up the bone regeneration in case of avascular necrosis of the femoral head . In our present work the bipolar induction screw system as the depicted ASNIS S-Series screw with integrated coil and electrodes were investigated. ...
University of Manchester, Manchester, UK
This report mainly discusses the implementation and results of a project proposal, “Modelling using Finite Element Methods”. The report is devoted to implementation, which is a model of an electromagnet. The software tool that is used to model the electromagnet is COMSOL Multiphysics®, a commercial FEA package provided by the University of Manchester, Computer Science School. Additionally, the ...
V.M. Rodriguez-Zermeno, M.P. Sørensen, N.F. Pedersen, N. Mijatovic, and A.B. Abrahamsen
DTU Mathematics, Lyngby, Denmark
DTU Electrical Engineering, Lyngby, Denmark
Materials Research Division, Risø, DTU, Roskilde, Denmark
This work presents a method to calculate AC losses in thin conductors such as the commercially available second generation superconducting wires through a multiscale meshing technique. The main idea is to use large aspect ratio elements to accurately simulate thin material layers. For a single thin superconductor, several standard test cases are simulated including transport current, externally ...