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.

FEM Study on the Effect of Metallic Interdigital Transducers on Surface Acoustic Wave(SAW) Velocity in SAW Devices

A. K. Namdeo, and H. B. Nemade
Department of Electronics and Electrical Engineering
Indian Institute of Technology Guwahati
Assam, India

In this paper, we present study on the mass loading effect of the interdigital transducer (IDT) on surface acoustic wave (SAW) velocity in SAW devices, using COMSOL Multiphysics. We have simulated a one port SAW resonator made on YZ lithium niobate substrate and investigated the reduction of SAW velocity caused by the mass loading of aluminum IDT fabricated over the substrate, using finite ...

Study of Thermal Behavior of Thermoset Polymer Matrix Filled with Micro and Nanoparticles

B. Reine[1], J. Di-Tomaso[2], G. Dusserre[1], P. Olivier[1]
[1]Université de Toulouse, UPS, INSA, Mines Albi, ISAE, ICA, IUT, Dept. GMP, Toulouse Cedex, France
[2]RESCOLL - Société de Recherche, Pessac Cedex, France

This paper addresses the study of thermal behavior of thermoset polymer matrix filled with microparticles. A numerical model was developed with COMSOL Multiphysics to get a random spatial distribution of fillers in a representative volume element (RVE). This model was then compared to an analytical reference model (Hamilton model) and experimental results. This comparison highlights a good ...

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 ...

Thermo Mechanical Behavior of Heat Exchangers

A. Chidley, F. Roger, and A. Traidia
ENSTA Paristech, Palaiseau, France

Nowadays, to go along with sustainable development and for cost matters, automotive heat exchangers are built with less and less aluminum and the process costs are being cut. However, the real mechanical response is a plastic shakedown, which is why we need to model the cyclic response as well as to find a fatigue criterion. A finite element model was developed using COMSOL Multiphysics to ...

Identification of the Complex Moduli of Orthotropic Materials using Modal Analysis

F. Van den Abeele[1], J.R. De Oliveira Jr.[2], and F.J. Huertos[1]
[1]OCAS N.V., J.F. Kennedylaan 3, Zelzate, Belgium
[2]Federal University of Minas Gerais, Belo Horizonte, Brazil

It is very difficult to measure the global properties of heterogeneous and anisotropic materials like composites and sandwich structures. When designing composite sandwich applications, the elastic properties are required to perform structural stiffness and strength calculations. However, due to their anisotropic nature, it is not straightforward to measure these properties with traditional ...

Structural Performance of Polymeric Composite Members in a Transmission Line Tower

R. Hernandez-Corona [1], I. Ramirez-Vazquez [1],
[1] Instituto de Investigaciones Eléctricas, Transmision y Distribucion, Cuernavaca, Morelos, México

On transmission lines, the theft of redundant steel members from the transmission towers has been reported in recent years. The removal of these members from the tower can result in the collapse of the tower. An alternative to avoid this problematic is to replace some steel components by polymeric composite members. The integrity of the tower will be maintained if the polymeric composite ...

Thermo-Mechanical Simulation of Dissimilar Titanium Alloys Laser Welding

A. Mathieu [1], L. Weiss [2], E. Fleury [2]
[1] Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), CNRS-Université de Bourgogne Franche-Comté, Dijon, France
[2] Laboratoire d’Etudes des Microstructures et de Mécanique des Matériaux (LEM3), CNRS- Université de Lorraine, Ile du Saulcy, Metz, France

A 3D thermo-mechanical simulation was developed using COMSOL Multiphysics software in order to predict distortion of a welded dissimilar titanium alloys structure. An angular distortion and a longitudinal shrinkage are predicted in agreement with those obtained experimentally.

Acoustic Wave Crack Detection: A First Principles Approach

R. W. Pryor [1],
[1] Pryor Knowledge Systems, Inc., Bloomfield Hills, MI, USA

Crack detection is and has been an active field of exploration, both theoretical and applied for a number of years. It is the belief of this author that the concepts presented herein explore a new methodology for the modeling and the detection of cracks and families of cracks in crystalline solids, polycrystalline solids and high viscosity amorphous materials (glasses). In the case of the ...

Fluid Structure Interaction of Arch Dam on Full Reservoir Level under Seismic Loading

R. Manikandan[1], R. Jayashiri [1], R. Indumathi [1], J. Archana [1],
[1] Dhirajlal Gandhi College of Technology, Salem, Tamil Nadu, India

The Finite Element Model is analyzed with impounded water considering appropriate boundary conditions between the water & the upstream face of the dam .The fluid on the upstream side is considered to be incompressible, inviscous, and irrotational. Here the effect of fluid compressibility is analyzed by the use of COMSOL Multiphysics® software. The impact of water pressure on the upstream face of ...

Rheological and Topographical Controls on Deformation Due to a Shallow Magma Reservoir - new

J. H. Johnson[1]
[1]University of Bristol School of Earth Sciences, Bristol, UK

The use of high-resolution topography in the finite element model demonstrates that deformation from a shallow pressure source can be dramatically affected by overlying relief, not only in magnitude, but also in azimuth. This result is significant as it allows traditionally anomalous data to be evenly weighted during inversions for magma reservoir parameters. The result that surface ...