Z. Hasan, F. Darwish, and S. Al-Absi
Texas A&M University, College Station, TX, USA
Jordan University of Science and Technology, Irbid, Jordan
The main objective of the present work is to perform stress analysis on composite laminates under unaxial/biaxial loading to serve as a preliminary data for test verification. A detailed calculation based on the Classical Lamination Theory was performed for a laminate. The material used was carbon/epoxy applying a pure uniaxial load followed by a biaxial load. It was observed that the failure ...
Sonsight Inc., Accokeek, MD, USA
The current paper describes how a properly chosen skew angle can be used to significantly decrease the amplitude of the high and/or low frequency cogging torque components. The approach is further demonstrated with the help of FE results from COMSOL Multiphysics. The numerical analyses incorporates a COMSOL model that is similar to a combination of two examples from the AC/DC Model Library: the ...
Characterization of an AlGaN/GaN Electrostatically Actuated Cantilever Using the Finite Element Method
N. DeRoller, M. Qazi, J. Liu, and G. Koley
University of South Carolina, Columbia, SC, USA
AlGaN/GaN heterostructures are unique because the 2DEG at the interface is created by the difference in polarization properties of the AlGaN and the GaN layers; not due to intentional doping. In this work, a 3D model of an electrostatically actuated micro cantilever has been developed using COMSOL for characterization using the finite element method (FEM). The microcantilever has AlGaN/GaN HFET ...
R. Bikky, N. Badi, and A. Bensaoula
University of Houston, Houston, TX, USA
In this work, we present the effective properties of nanodielectrics with gold (Au) nanoparticles embedded in polymer (Polyvinyl Pyrrolidone (PVP)) matrix, calculated by using finite element method (FEM) based simulation in COMSOL Multiphysics software. Drude model is used to calculate size dependent complex dielectric function of Au. EMTs of Maxwell-Garnett, Bruggeman and Looyenga models are ...
JBL Professional, Northridge, CA, USA
The author presents an overview of methods to build virtual prototypes of both horns and loudspeaker drivers which allows a significant reduction in the number of physical prototypes, as well as reduced development time. This paper will present some of the practical results from work the author has performed in the course of designing both transducers and horns using COMSOL Evolution of the ...
S. Khushrushahi, and M. Zahn
Massachusetts Institute of Technology, Cambridge, MA, USA
A fully filled sphere of ferrofluid has constant demagnetizing factors in all three Cartesian directions such that when subjected to a uniform external rotating magnetic field the internal field is also uniform, and ultrasound measurements give no observable flow. Non-uniform magnetic fields or a non-uniform distribution of susceptibility are necessary conditions for ferrofluid spin-up flows in ...
B.A. Finlayson, and R.A. Shaw
University of Washington, Seattle, WA, USA
National Research Council of Canada, Winnipeg, MB, Canada
Infrared spectroscopy can be used to identify chemicals in a stream provided the signal is strong enough. A microfluidic device is modeled here with the objective of separating serum components so as to enhance the metabolite/protein concentration ratio. Serum contains creatinine (a representative metabolite) and albumin (representative protein). The laminar fluid diffusion interface (LFDI) ...
U.S. Army Engineer Research & Development Center, Vicksburg, MS, USA
Dr. McKenna is a Research Geophysicist at the U.S. Army Engineer Research and Development Center (ERDC). She directs the Denied Area Monitoring and Exploitation Systems working group at ERDC, which has ongoing integrated high performance computing modeling and experimental research with the Department of Defense, Department of Energy, Defense Intelligence Agency, Los Alamos National Laboratory ...
Modification of the Ion Angular Distribution in Plasma Sheath: Modeling Approach under COMSOL Multiphysic
TEL US Holdings, Albany, NY, USA
System for in-situ control of the ion angular distribution function (IADF) in plasma reactor is modeled. Typical IADF depends on the pressure, bias and excitation frequency. It is formed due to a difference in the physical properties of the plasma and sheath domains. The IADF is modified by biased grid which is built into a holder. The time varying E-field in sheath is influencing the ion path. ...
K.C. Koppenhoefer, S.Y. Yushanov, L.T. Gritter, J.S. Crompton, and R.O. Edwards
AltaSim Technologies LLC, Columbus, OH, USA
Cummins Fuel Systems, Columbus, IN, USA
Reynolds equation is used to analyze fluid flow through small gaps. As such, the solution of Reynolds equation provides critical information for a wide range of tribological problems. In any case where a lubricant resides between two moving surfaces, the Reynolds equation can be used to solve for the flow. In the case considered in this paper, lubricant flows between a piston and housing forced ...