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.

Virtual Commissioning of Large Machines with COMSOL Multiphysics® Software

K. Kryniski [1], A. Trangard [1],
[1] ABB Corporate Research, Västerås, Sweden

In addition to using advanced functions built-into the engine of the COMSOL Multiphysics® software, we integrate dynamic properties of rotating components that are measured or pre-computed. Here, it is shown how to integrate fluid-film characteristics and take advantage of post-processing and graphics to present the results to the customers using the Cloud. COMSOL® simulations of rotor-bearing ...

High-Resolution FSI Modeling of a High-Aspect Ratio Involute Flow Channel in the HFIR at ORNL

A. I. Elzawawy [1], J. D. Freels [2], F. G. Curtis [2, 3],
[1] Vaughn College of Aeronautics and Technology, East Elmhurst, NY, USA
[2] Oak Ridge National Laboratory, Oak Ridge, TN, USA
[3] University of Tennessee, Knoxville, TN, USA

The high flow rate within the HFIR cooling water flow channel causes the fuel plates to deflect which in turn, changes the coolant flow characteristics. This nonlinear feedback loop between the coolant and the fuel plate is the focus of the present simulation of the fluid-solid interaction between the coolant flow and the fuel plates to accurately predict the plate’s deflection using the Fluid ...

Numerical Vibration Analysis of Impacted CFRP Specimens Using COMSOL Multiphysics® Software

P. Jatzlau [1], F. Seybold [1], C. Grosse [1],
[1] Technical University of Munich, Chair of Non-destructive Testing, Munich, Germany

The vibration behavior of carbon fiber reinforced composites (CFRP) specimens with impact damage is presented in order to evaluate if an before/after modal analysis can be used as a non-destructive testing method to detect delaminations. The impact damage is modeled by decreasing the stiffness in the described area of delamination. As detailed experimental data exists for the modeled structure, ...

A Parametric Study on the Dynamic Behavior of Cable Supported Bridges Under Moving Loads Affected by Accidental Failure Mechanisms

P. Lonetti[1], A. Pascuzzo[1], R. Sarubbo[1]
[1]Department of Structural Engineering, University of Calabria, Rende, Cosenza, Italy

The dynamic behavior of cable supported bridges subjected to moving loads and affected by corrosion and accidental failure mechanism in the cable suspension system is investigated. The different types of cable supported bridges are distinctively characterized by the configuration of the cable system [1]. The suspension system comprises a parabolic main cable and vertical hanger cables connecting ...

Stress and Fatigue Analysis of Subsea Umbilical and Cable Systems

M.S. Yeoman[1], V. Sivasailam[1], T. Poole[3], S. Ingham[3]
[1]Continuum Blue, Tredomen, Ystrad Mynach, United Kingdom
[3]JDR Cable Systems, Littleport, Cambridgeshire, United Kingdom

With the ever changing energy requirements & demand for better communication links across the planet, subsea umbilical & cable requirements are becoming more stringent. Where longer service life at a lower cost is now expected from manufacturers. In addition to this, with the need to exploit more sustainable energy sources from offshore wind & wave, where extreme weather conditions are ...

Nonlinear Mechanical Modeling of Thermoplastics

J. Bergstrom [1], N. Elabbasi [1],
[1] Veryst Engineering, Needham, MA, USA

The use of thermoplastic materials is increasing and it is becoming more important during the design process to accurately represent the non-linear material response in relevant loading conditions. The COMSOL Multiphysics® software supports advanced modeling capabilities for large deformation analyses, including contact and multiphysics couplings. It is now also possible to use advanced non ...

The Use of COMSOL Multiphysics® for Studying the Fracture Pressure of Rectangular Micro-Channels Embedded in Thin Silicon Substrates

K. Howell[1], H. Georgiou[2], P. Petagna[3], G. Romagnoli[3]
[1]George Mason University, Fairfax, VA, USA
[2]Cyprus University of Technology (C.U.T), Limassol, Cyprus, EU
[3]CERN - The European Organization for Nuclear Research, Geneva, Switzerland, EU

The thermal management of silicon detectors and related electronics through micro-structured silicon cooling plates is gaining considerable attention for high precision particle trackers. Micro-fluidic circuits are etched in a silicon wafer, which is then bonded to a second wafer to obtain a cooling circuit. Because mono-crystalline silicon is structurally close in characteristics to brittle ...

Multiphysics Modeling of Spring-Supported Thrust Bearings for Hydropower Applications

F.X. Borràs[1], J. Ukonsaari[2], A. Almqvist[1]
[1]Luleå University of Technology, Luleå, Sweden
[2]Vattenfall Research and Development, Luleå, Sweden

Spring-supported thrust bearings are used in huge rotor dynamic machines, generally to support the shafts from the biggest hydropower generators. Any attempt of modifying yhis type of thrust bearing implies huge investment and is associated with some risks. The goal of the present work is to predict the performance of spring-supported thrust bearings. With the model it is possible to carry out ...

Simulation of Cellular Traction Force Based Deflection of PDMS Micropillars - new

J. Wala[1], D. Maji[1], S. Dhara[1], S. Das[1]
[1]Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India

Cells are complex entities which not only passively sense external stimuli (viz. chemical, optical or mechanical) but also interact with extracellular matrix (ECM) by regulating cellular behavior such as growth, proliferation, migration, etc. Monitoring cell growth and migration of adherent cells becomes a crucial factor in determining cell-cell and cell-substrate interaction, important for ...

Structural Analysis of a Pressure Sensor for High Temperature Environments

S.V. De Guido[1], G.S. Masi[1], P. Vladimirovich Miodushevsky[1], L. Vasanelli[1]
[1]Department of Innovation Engineering, University of Salento, Lecce, Italy

Pressure sensors operating at the temperature higher that 500 °C are absent in the world market. Our goal is to develop a pressure sensor that can operate at the high temperature up to 700 °C. Our sensor will be made up of a ceramic sensible element and a metallic case. The sensible element will be a ceramic beam with a Weathstone bridge on its surface. A structural analysis on the case has been ...