Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Design and Analysis of Implantable Nanotube Based Sensor for Continuous Blood Pressure Monitoring

M. Silambarasan, T. Prem Kumar, M. Alagappan, and G. Anju
PSG College of Technology
Coimbatore
Tamil Nadu, India

The present work aims to develop a blood pressure sensor using MEMS/NEMS technology. A normal blood pressure detector is used externally, but this work mainly aims for designing an implantable nanotube based sensor for continuous monitoring of blood pressure. The use of COMSOL Multiphysics 4.1 acts as a good platform to develop a nano tube based sensor design by using the MEMS module. The ...

M4B, a Tool for the Analysis of THQM Behavior of Soils and Its Interaction with Building Foundations

J. Alonso [1], V. Navarro [1], M. Moya [1],
[1] Universidad de Castilla la Mancha, Ciudad Real, Spain

The Geoenvironmental Engineering Group of the University of Castilla-La Mancha is developing a computational tool, M4B, for describing the influence of environmental loads on the deformation behavior of soils and its interaction with building foundations. This tool comprises a set of algorithmic files in text format which can be implemented in COMSOL Multiphysics®. To illustrate the M4B scope, ...

Simulation of Hydrogen Transport and Hydrogen-Induced Damage of High-Strength Steel Concepts

T. Schaffner [1], A. Hartmaier [2]
[1] ThyssenKrupp, Duisburg, Germany
[2] Ruhr-Universität Bochum, Bochum, Germany

The prediction of material damage induced by hydrogen transport mechanisms is a major challenge for the development of new steel concepts. Especially the ultra-high strength steel concepts (UHSS), like dual phase and martensitic steels, can exhibit a higher vulnerability to hydrogen induced damage. The main reason for this is the complex microstructure, including a large number of several ...

Thermoelastic Model for Microwave Ablation of Concrete

B. Lepers[1], S. Soldatov[1]
[1]Karlsruhe Institute of Technology, Institute for Pulsed Power and Microwave Technology, Karlsruhe, Germany

The use of high power microwave energy for ablation of contaminated concrete is a promising technique to speed up the dismantling of nuclear power plants. A coupled simulation using COMSOL Multiphysics® finite element software is performed by solving the electromagnetic wave equation at 2.45 GHz for a standard wave guide and a concrete block. The temperature field is obtained with the heat ...

Toroidal Spring Coil: Displacements & Stress Analysis to Detect the Sealing Parameters

V. Riccardi [1],
[1] Cesare Bonetti, Garbagnate Milanese, Italy

The aim of the simulation is to study the behavior of a particular arrangement of a sealing system made of a Toroidal Spring Coil encapsulated in an thin casing, which is provided with a circumpherential cut to permit the pressure fill it inside. The mechanical simulation implemented in COMSOL Multiphysics® software is necessary to understand the displacements and stresses of the structure ...

Simulation of Thermal Elastohydrodynamic Lubricated (TEHL) Gear Contacts - new

T. Lohner [1], A. Ziegltrum [1], K. Stahl [1],
[1] Gear Research Centre (FZG), Technical University of Munich (TUM), Garching, Germany

Thermal elastohydrodynamic lubricated (TEHL) contacts occur very frequently in drive technology and thus in gear drives. In this presentation, the implementation of a finite element based TEHL simulation approach for gear contacts in COMSOL Multiphysics® software is shown. The physically based simulation approach used is different to most of the existing TEHL simulations and is required to ...

Solving the Inverse Problem of Resonant Ultrasound Spectroscopy on Dumbbell-shaped Compression Samples Using COMSOL Multiphysics®

M. C. Golt[1]
[1]U.S. Army Research Laboratory*, Aberdeen Proving Ground, MD, USA
*Contracted through Dynamic Science, Inc.

The dumbbell geometry is an ideal shape for testing the compressive strength of advanced ceramic materials. This paper details the combined use of COMSOL Multiphysics® and LiveLink™ for MATLAB® for determining the elastic properties of dumbbell-shaped samples by measuring their acoustic resonance frequencies. Degenerate bending modes which are sensitive to inhomogeneities or machining defects ...

Cryogenic Design for the SAFARI Test-Setup Calibration Source

C. de Jonge[1], M. Eggens[1], W. Laauwen[1], P. Dieleman[1], G. Keizer[1]
[1]SRON Netherlands Institute for Space Research, Utrecht, The Netherlands

For the SAFARI Imaging Spectrometer, part of the SPICA satellite payload, a Calibration Source is under development. Challenges in the design include the low cooling power (few mW) available at cryogenic temperatures. COMSOL Multiphysics® simulations were used extensively in the design process of the calibration source, allowing optimization of the thermal, electro-magnetic and mechanical ...

Thermomechanical Modeling of Dislocation Density Increase During PVT of SiC Crystals

D. Jauffrès [1], J. M. Dedulle [2], D. Chaussende [2], K. Ariyawong [2]
[1] Univ. Grenoble Alpes, LMGP, SIMAP, CNRS, Grenoble, France
[2] Univ. Grenoble Alpes, LMGP, CNRS, Grenoble, France

During Physical Vapor Transport (PVT) growth of single 4H-SiC crystal and subsequent cooling down, thermal stresses lead to the multiplication of dislocations that are non-desirable for the semiconductor applications of this material. These dislocations induced by thermal stresses could be reduced by an appropriate control of the thermal gradients inside du crystal during its growth and cooling ...

Determination of the Sweet Spot of a Cricket Bat using COMSOL Multiphysics® Software

Y. Mulchand [1], A. Pooransingh [1], R. Latchman [1],
[1] The University of the West Indies, St. Augustine, Trinidad and Tobago

The aim of this paper is to determine the location of the “sweet spot” for a selected cricket bat commonly used in the sport. Knowledge of the “sweet spot” is important in delivering a shot that utilizes the optimal zone of the bat that corresponds to the maximum power of the stroke. A model of the cricket bat was constructed in the Structural Mechanics Module of COMSOL Multiphysics® Software ...