Papers & Presentations

Showing results 1 - 20 of 93

Structural Mechanics

3-D Finite Element Modeling of Breathing Mode for Dry-Type Air-Core Reactors 3-D Finite Element Modeling of Breathing Mode for Dry-Type Air-Core Reactors

A crucial factor concerning modern reactors is a combination of laws and electro-technical rules defining appropriate produced sound levels. Currently, it is an important issue to reduce noise in order to fulfill all sound requirements....
COMSOL Conference 2007, Grenoble
L. Verbruggen1, J. Kotiniitty2, and M. Lehtonen1
1Power Systems and High Voltage Laboratory, Helsinki University of Technology, Helsinki, Finland
2Nokian Capacitors Ltd., Tampere, Finland

A Discussion on Load Cell Practice Theory – Use COMSOL A Discussion on Load Cell Practice Theory – Use COMSOL

Though used widely in weight measurement, load cell’s theory is tedious enough to practice. This paper explains and discusses how strain gauges and Wheatstone Bridges work, both of which are important components of the load cell. COMSOL...
COMSOL Conference 2007, Taipei
W. L. Wang, W. H. Liao, and C. G. Zeng
Department of Mechanical Design Engineering, National Formosa University

A Finite Element Model For Structural And Aeroelastic Analysis Of Rotary Wings With Advanced Blade Geometry A Finite Element Model For Structural And Aeroelastic Analysis Of Rotary Wings With Advanced Blade Geometry

Objective of this paper is the development and implementation of a finite element model, in a COMSOL Multiphysics context, for the prediction of the aeroelastic behavior of rotor blades. In particular, the attention is focused on new...
COMSOL Conference 2010, Paris
E. Piccione, G. Bernardini, and M. Gennaretti
University Roma Tre Dept. of Mechanical and Industrial Engineering, Via della Vasca Navale, Rome, Italy

A Flexible Scheme For Numerical Homogenisation In Linear Elasticity A Flexible Scheme For Numerical Homogenisation In Linear Elasticity

Musculoskeletal mineralised tissues (MMTs), like bone or tendon, are a prime example of naturally occuring, hierarchically structured material. They display a great variety in mechanical function but are all based on essentially the same...
COMSOL Conference 2010, Paris
A. Gerisch1 , S. Tiburtius1 , Q. Grimal2 , and K. Raum3
1 Technische Universität Darmstadt, Germany
2 Université Pierre et Marie Curie Paris VI, France
3 Charité-Universitätsmedizin Berlin, Germany

A Mixed Boundary Value Problem That Arises in the Study of Adhesively Bonded Structures A Mixed Boundary Value Problem That Arises in the Study of Adhesively Bonded Structures

The study of deformation of an adhesively bonded sandwich structure reduces to solving the biharmonic equation for the Airy Stress subject to mixed boundary conditions. Because of the nature of the boundary conditions, this boundary value...
COMSOL Conference 2010, Boston
R. Malek-Madani, and J.J. Radice
US Naval Academy, Annapolis, MD, USA

Analysis Of The Design Criteria For Ancient Greek And Roman Catapults Analysis Of The Design Criteria For Ancient Greek And Roman Catapults

This paper will give a short overview of use of COMSOL Multiphysics for analyzing ancient Greek and Roman catapults with the main focus on the energy storing torsion springs. Catapults have been known and used in the Greek and Roman world...
COMSOL Conference 2010, Paris
K.M. Paasch
Center for Product Development, Mads Clausen Institute, South Danish University, Denmark

Analysis of the Mechanical Behavior of Violins Based on a Multi-physics Approach Analysis of the Mechanical Behavior of Violins Based on a Multi-physics Approach

The paper attempts to give a contribution to the dynamic analysis of musical instruments. A multidisciplinary approach oriented to the study of mechanical, structural, vibratory and acoustical phenomena related to stringed instruments is...
COMSOL Conference 2008, Hannover
E. Ravina
Dept. of Mechanics and Machine Design, Research Centre on Choral and Instrumental Music (MUSICOS), University of Genoa, Italy

An Analysis of Plunger Temperature during Glass Parison Pressing An Analysis of Plunger Temperature during Glass Parison Pressing

The press and blow (P&B) process is widely used to produce glass containers. While the P&B process has demonstrated to be capable of reducing container weight by as much as 33%, it can also induce the formation of micro-checks...
COMSOL Conference 2008, Boston
P. Ngankeu1 , and E. Gutierrez-Miravete2
1 EMHART Glass Research Inc, Windsor, CT, USA
2 Rensselaer at Hartford, Hartford, CT, USA

An Optimized Convolutional-Perfectly Matched Layer (C-PML) Absorbing Boundary Condition for Second-order Elastic Wave Equations An Optimized Convolutional-Perfectly Matched Layer (C-PML) Absorbing Boundary Condition for Second-order Elastic Wave Equations

In this study, we extend the Convolution-Perfectly Matched Layer (C-PML) method we have developed for a first order system describing elastic waves in velocity and stress formulation to the same equation written as a second order system...
COMSOL Conference 2007, Grenoble
O. Bou Matar1,2, E. Galopin1, Y. Li1,2, and O. Ducloux1,2
1Institut d'Electronique, de Micro-électroniqueet de Nanotechnologie, Villeneuve d'Acsq, France
2Laboratoire Européen Associé en MagnétoAcoustiqueNonlinéaire de la matière condensée (LEMAC), Ecole Centrale de Lille, Villeneuve d'Ascq, France

A Numerical Model for Transient Heat Conduction in Semi-Infinite  Solids Irradiated by a Moving Heat Source A Numerical Model for Transient Heat Conduction in Semi-Infinite  Solids Irradiated by a Moving Heat Source

A numerical analysis on transient three-dimensional temperature distribution in a semi-infinite solid, irradiated by a moving Gaussian laser beam, is carried out numerically by means of the code COMSOL Multiphysics. The investigated...
COMSOL Conference 2008, Hannover
N. Bianco1 , O. Manca2 , S. Nardini2 , and S. Tamburrino2
1 Dipartimento di Energetica, Termofluidodinamica applicata e Condizionamenti ambientali, Università degli Studi Federico II, Napoli, Italy
2 Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Aversa (CE), Italy

A Numerical Study for Rubber Particles Collection Involved in New Thermoforming Composite Process Using COMSOL Multiphysics<sup>&reg;</sup> A Numerical Study for Rubber Particles Collection Involved in New Thermoforming Composite Process Using COMSOL Multiphysics®

This paper deal of the forming process applied to the thermoplastic composites. A new thermoforming process that uses rubber particles collection as flexible mould was presented and numerically modeled. A characterization of the rubber in...
COMSOL Conference 2009, Milan
R. Carbone1 , V. Antonelli2 3 , A. Langella1 , and R. Marissen3
1 Material and Production Engineering Department, Università degli Studi di Napoli Federico II, Napoli, Italy
2 Institute of Lightweight Structures, Technische Universität München, München, Germany
3 Design and Production of Composite Structure, Delft University of Technology, Delft, The Netherlands

Application of COMSOL Multiphysics to Finite Strain Viscoelasticity of an Elastomeric Solid Application of COMSOL Multiphysics to Finite Strain Viscoelasticity of an Elastomeric Solid

The paper presents an implementation in COMSOL Multiphysics of Holzapfel's material model for the viscoelastic stress response of carbon-black filled rubber at large strains. The simulation uses the Structural Mechanics Module...
COMSOL Conference 2006, Prague
B. Marvalov
Technical University of Liberec, Czech Republic

A predictive model for the micro-porosity quantitative in Al-Si alloy A predictive model for the micro-porosity quantitative in Al-Si alloy

The fatigue is the most important criterion for the securities parts (brake system for example). The increasing use of shaped cast aluminium in the security automotive parts has focused interest on the fatigue of theses alloys. The...
COMSOL Conference 2005, Boston
Battaglia, J.L., Rozot, J.M.
France

Calculating the Fatigue Crack Initiation in Machine Parts under Random Multiaxial Loading Calculating the Fatigue Crack Initiation in Machine Parts under Random Multiaxial Loading

The authors present a method for estimating fatigue life due to crack initiation using FEM under multiaxial random loading. The proposed method uses the multiaxial fatigue failure criteria based on the critical plane concept. Damages...
COMSOL Conference 2006, Frankfurt
A. Nieslony1 , and C.M. Sonsino2
1 Opole University of Technology, Department of Mechanics and Machine Design, Opole, Poland
2 Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF, Darmstadt

Calculus of the Elastic Properties of a Beam Cross Section Calculus of the Elastic Properties of a Beam Cross Section

Saint-Venant general rod theory is used to calculate the elastic factors of a section through the numerical solution of a system of partial differential equations. The elastic properties so evaluated are used in a geometric nonlinear...
COMSOL Conference 2009, Milan
A. Genoese1 , A. Genoese1 , and G. Garcea1
1 Dipartimento di Modellistica per l'Ingegneria, Università della Calabria, Arcavacata di Rende, CS, Italy

Computational Analysis of the Mechanical and Thermal Stresses in a Thin Film PProDOT-Based Redox Capacitor Computational Analysis of the Mechanical and Thermal Stresses in a Thin Film PProDOT-Based Redox Capacitor

Among the several types of capacitors, the double-layer and redox types have gathered increasing attention to address some of the heavy power demands of modern technology. In redox capacitors, charge is stored chemically via...
COMSOL Conference 2008, Boston
J. Sotero-Esteva1 , M. Rosario-Canales2 , P. Gopu3 , and J. Santiago-Avilés3
1 Department of Mathematics, University of Puerto Rico at Humacao, Humacao, PR
2 Department of Chemistry, University of Pennsylvania, Philadelphia, PA, USA
3 Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA

Defining the stress fields for the safety design of the LBT adaptive secondary mirror - FEMLAB/MATLAB set of functions to define and compute shell overstressing Defining the stress fields for the safety design of the LBT adaptive secondary mirror - FEMLAB/MATLAB set of functions to define and compute shell overstressing

This paper presents the most important safety issues of the thin glass shell of the LBT Adaptive Secondary Mirror. Two overstressing conditions are investigated: the condition in which the mirror shell is passively supported and the...
COMSOL Conference 2005, Boston
Del Vecchio C., Busoni L., Riccardi, A.
INAF-OAA

Design and Stress Analysis of a General Aviation Aircraft Wing Design and Stress Analysis of a General Aviation Aircraft Wing

The present study focuses on the design and analysis of a single-engine, propeller-driven general aviation airplane. Initial weight estimation based on the initial sketch and the design mission profile is conducted. The estimated weight...
COMSOL Conference 2010, Boston
G. Atmeh1 , F. Darwish1 , and Z. Hasan2
1 Jordan University of Science and Technology, Irbid, Jordan
2 Texas A&M University, College Station, TX, USA

Design of an Autonomous Millimeter Scale Robot Using COMSOL Design of an Autonomous Millimeter Scale Robot Using COMSOL

In this work, we describe the design of a new type of microrobot, the Catom, which is the basic unit of the modular robotic system Claytronics. The Catom is an autonomous, free standing, three dimensional microrobot, which uses...
COMSOL Conference 2010, Boston
M.E. Karagozler, and S.C. Goldstein
Carnegie Mellon University, Pittsburgh, PA, USA

Design of Soft Actuators using Ionic Polymer Metal Composites Design of Soft Actuators using Ionic Polymer Metal Composites

This paper characterizes and models the bending motion of the strip-type Ionic Polymer Metal Composites (IPMC) actuators using the theory of Large Deflections of Beams. From here it derives a thermal analogy. The mathematical model has...
COMSOL Conference 2007, Tokyo
D. M. G. Preethichandra1, B. G. L. T. Samaranayake2, A. M. U. S. K. Alahakoon2 and K. Kaneto1
1Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Hibikino, Wakamatusu-Ku, Kitakyushu-Shi, Japan
2Department of Electrical and Electronics Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya, Sri Lanka