In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.

Modeling of Vickers indentation of TiAl alloys

G. Maizza, and R. Cagliero
Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino, Italy

Instrumented indentation is increasingly used as an alternative non-destructive test method to measure mechanical properties of small volumes of materials. In this work, the instrumented indentation test is applied as a non-destructive method to assess the mechanical properties of TiAl components during the setup of a real production process. This study is a preliminary contribution devoted to ...

The Non Linear Behavior of the Microplane Model in COMSOL

A. Frigerio[1]
[1]RSE, Milano, Italy

The safety of large civil structures is often evaluated by means of numerical models based on the Finite Element Method (FEM). In the last year, the elastic behavior of the Microplane Model was implemented in COMSOL because it is a promising approach able to overcome the limit typical of the classical approaches, which in general are able to simulate in a proper way only a few specific ...

Nature-Inspired Surfaces and Engineering Applications Using COMSOL Multiphysics®

R. C. Thiagarajan [1], P. Asutosh[1],
[1] ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, Karnataka, India.

Engineering design has long been dominated by orthogonal Cartesian principles. Nature inspired equation based mathematical surfaces are under renewed interest due to their innovative design potential and practical viability by 3D printing. In this paper, the parametric surface modelling feature of COMSOL Multiphysics® is leveraged for developing engineering structures from equation based ...

Biologic Tissues Properties Deduction Using an Opto-Mechanical Model of the Human Eye

A. V. Maurer [1], D. P. Enfrun [1], C. O. Zuber [1], R. Rozsnyo [2],
[1] R&D, Kejako, Plan-les-ouates, GE, Switzerland
[2] MNCM, HES-SO, GE, Switzerland

The visual accommodation is a complex biomechanical & optical process. Today in vivo imaging technologies do not allow to measure the eye components material properties, such as the refractive index or the stiffness: these properties are essential to understand and diagnose the effect of aging on the eye accommodative performance and develop new surgeries. To address this problem, Kejako has ...

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 ...

The Refinement of the Contact Compression Ring Chamfer for Race Engine Conditions

M. Dickinson[1], N. Renevier[2], W. Ahmed[3]
[1]Racing to Research team, School of Computing, Engineering and Physical Sciences, University of Central Lancashire, Preston, United Kingdom
[2]The Jost Institute, School of Computing, Engineering and Physical Sciences, University of Central Lancashire, Preston, United Kingdom
[3]Institute of Nanotechnology and Bioengineering, School of Computing, Engineering and Physical Sciences, University of Central Lancashire, Preston, United Kingdom

Use of COMSOL Multiphysics: In operation, the piston ring is surrounded by gas acting on it, using effect of chamfer design has been considered using Love’s equation in conjunction with Stone’s equation for force ad Miler’s equation for gas pressure modelling. The chamfer geometry was controlled through variable inputs such as coating thickness, ring thickness, distance from the ring angle ring ...

Design of Pressure Measuring Cells Using the Unified Material Law

P. Aguirre[1], F. Figueroa[1]
[1]Sensor Technik Wiedemann GmbH, Kaufbeuren, Bayern, Germany

Pressure Sensors are widely used in the automotive industry. Their main use is the dynamic monitoring of pressure inside combustion engines. To achieve a good signal accuracy, the design of pressure sensors can be improved with FEM calculations of stress and strains on the measuring cell depending on their geometry and material properties. The geometry is adapted according to a special ...

Advanced Multiphysics Thermal Hydraulic Models for the High Flux Isotope Reactor

P. K. Jain [1], J. D. Freels [1],
[1] Oak Ridge National Laboratory, Oak Ridge, TN, USA

Engineering design studies of the feasibility of conversion of the High Flux Isotope Reactor (HFIR) from high-enriched uranium to low-enriched uranium fuel are ongoing at ORNL as part of an effort sponsored by the U.S. Global Threat Reduction Initiative program. HFIR is a very high flux, pressurized light-water-cooled and moderated, flux-trap type research reactor whose current missions are to ...

Optimization of a Thermoelectric Conversion System

J. R. Chase [1],
[1] Alphabet Energy, Hayward, CA, USA

Thermoelectric materials have no theoretical limit to conversion efficiency of heat into electrical power. In order to compete with other forms of power generation and small-scale energy conversion, thermoelectric converters need to maximize their practical usability when integrated with real-world sources of waste heat, and in real-life service environments. This trade-off reduces itself to ...

Simulation and Performance Analysis of Nanowire Design with Different Variants

Boopathi S[1], Ms.E.Malar[1], Deepan Chakravarthi P[1]
[1]Department of Biomedical Engineering, PSG College of Technology, Coimbatore, Tamil Nadu, India

This paper deals with an integrated numerical and experimental analysis work aiming at the investigation of the thermal stress on nanowires in electronic gadgets especially computers and mobile phones. The comparative study of the nanowires are analyzed through the Thermal Stress physics using different variants such as Cu, Al, ZnO, Si(c), SiO2 which can be used in sensors, solar cells, LCD, ...