Technical Papers and Presentations

Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

COMSOL Multiphysics Predictions of Pressurized CO2 Foil Thrust Bearing Characteristics

T. Munroe
Bechtel Marine Propulsion Corporation
Niskayuna, NY

This report discusses an analysis of gas foil thrust bearings used in the Integrated Systems Test (IST) turbomachinery. Gas foil thrust bearing failures occurred in IST turbomachinery during operational testing at Barber-Nichols Inc. This paper presents preliminary results of a study to assess, by means of multiphysics analyses, the performance characteristics of the foil thrust bearing over ...

Effect of Calcification Properties on Stress in Models of Atherosclerotic Plaque

C. Buffinton, P. Rogerson, and D. Ebenstein
Bucknell University
Lewisburg, PA

The effects of calcifications on arterial wall stress have been largely ignored, in part because the material properties of the calcified areas were taken to be the same as the fibrous plaque, and in part because they are often assumed to have a stabilizing influence. Recent measurements suggest that their stiffness should be more similar to bone. A computational model is indicated for this ...

Structural and Geomechanics Modeling of a Railroad Bridge

H. Diaz-Alvarez, R. Costley, D. Whitlow, M. McKenna, C. Williamson, and O. Taylor
US Army Engineer & Development Center
Vicksburg, MS

Previous studies have determined that bridges radiate acoustic energy in the infrasonic frequency range. Initial interest in this topic was the result of trying to identify sources of infrasound recorded at stations deployed near bridges. A Finite Element model has been developed for a Pratt truss railroad bridge located at Ft. Leonard Wood, MO. The model consists of 3-D Euler beam elements ...

Modeling and Simulation of Circular and Square Diaphragm Absolute Micro Pressure Sensors using COMSOL

M. Sundaram[1], A. Simha[2], S M. Kulkarni[3], and S. Bhat[4]
[1]Department of ICE, Manipal Institute of Technology, Manipal, India
[2]Department of Mechatronics, National Institute of Technology, Suratkal, India
[3]Department of Mechanical, National Institute of Technology, Suratkal, India
[4]Department of E&C, Manipal Institute of Technology, Manipal, India

The aim of this paper is to model and simulate a Circular and Square diaphragm absolute micro pressure sensors. With the applied pressure, the change in deflection and stress pattern of the diaphragm is analytically determined. The structures are then simulated using COMSOL Multiphysics®. The results obtained from analytical equations are compared with simulated results. The range and ...

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