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Numerical and Experimental Study of a Concentrated Indentation Force on Polymer Matrix Composites

V. Antonucci[1][2], M. Esposito[1], R. Marzella[2], and M. Giordano[1][2]
[1]Institute for Composite and Biomedical Materials, CNR, Portici, NA, Italy
[2]Imast, Portici, NA, Italy

A quasi static indentation test on a laminate composite has been investigated numerically and experimentally. In particular, the test has been implemented by COMSOL Multiphysics® and optimizing the Finite Element and mesh. In addition, the numerical strain results have been validated by the comparison with the respective experimental deformation data that have been obtained by fiber Bragg ...

An Analysis of Plunger Temperature during Glass Parison Pressing

P. Ngankeu[1], and E. Gutierrez-Miravete[2]

[1]EMHART Glass Research Inc, Windsor, CT, USA
[2]Rensselaer at Hartford, Hartford, CT, USA

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 that weaken container strength. This paper presents a model of the heat transfer due to the intermittent contact of glass with the plunger during several pressing ...

Stress Distribution in Masonry Walls, Loaded in Plane, Simulated with COMSOL

A.T. Vermeltfoort, and J. van Schijndel
Eindhoven University of Technology, the Netherlands

The tensile strength of masonry is relatively low compared to its compressive strength and is affected by the direction of the joints and their filling. In masonry with modern thin layer mortar (joint thickness 3 to 5 mm) sometimes the head joints are left open. A total of 13 model-walls was built and for each model four general purpose mortar combinations and three thin layer mortar ...

Multiphysics Software Applications in Reverse Engineering

W. Wang[1], K. Genc[2]
[1]University of Massachusetts, Lowell, MA, USA
[2]Simpleware, Exeter, United Kingdom

During the past decade reverse engineering has become a common and acceptable practice utilized by many aftermarket suppliers, and even original equipment manufacturers (OEM). This presentation focuses on the applications of multiphysics software such as COMSOL and Simpleware® in reinventing the design details and manufacturing processes of an existing part in the absence of the original design ...

A Numerical Study for Rubber Particles Collection Involved in New Thermoforming Composite Process Using COMSOL Multiphysics®

R. Carbone[1], V. Antonelli[2][3], A. Langella[1], and R. Marissen[3]

[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

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 particles form was previously performed to value the material parameters in the user-defined hyperelastic constitutive laws employed in the FEM (Finite Element ...

Structural Mechanics of Cooling Catheters

M. Pavelchak, J. Urcinas, and T. Merrill
Rowan University, Glassboro, NJ, USA

This paper describes the use of structural mechanics capabilities within COMSOL to explore new cooling catheter designs. Cooling catheters may be used to save ischemic tissue resulting from strokes or heart attacks. Typical guide catheters use metallic braiding to ensure torsional strength. Braiding, however, displaces space for flows and limits design options. To explore alternatives to ...

Modeling of Anisotropic Suede-like Material During the Thermoforming Process

G.Lelli[1], M. Pinsagli[1] , and E. di Maio[2]
[1]Alcantara S.p.A. (Application Development Center), Nera Montoro, Italy
[2]University of Naples "Federico II" (Department of Materials and Production Engineering), Naples, Italy

Physical and mechanical studies of Alcantara® have shown very pronounced anisotropic nonlinear features. Using constitutive equations borrowed from the modelling of biological tissues like tendons and/or arteries under the form of hyperelastic free-energy functions, a good representation of such mechanical features can be obtained. In particular, a combination between the optimization module ...

A Simplified Approach to the Contact in Thermo-mechanical Analysis of Refractory Linings

Y. Kaymak
VDEh Betriebsforschungsinstitut GmbH
Düsseldorf, Germany

The geometrical design and material choice for a refractory lining requires a good understanding of its thermo-mechanical behavior. Design engineers clearly need a tool for fast and efficient computation of thermo-mechanical state of refractory linings under various conditions. However, standard simulation models and their solutions suffer as the linings are composed of many refractory blocks in ...

Thermal Model for Single Discharge EDM Process Using COMSOL Multiphysics

K. Gajjar[1], U. Maradia[2], K. Wegener[2]
[1]Indian Institute of Technology Bombay, Mumbai, Maharshtra, India
[2]Institute for Process Tools and Manufacturing (IWF), Zurich, Switzerland

Electrical Discharge Machining (EDM) is a non-conventional process used for machining electrically conducting materials. In die sink-EDM, sparks are generated between tool and workpiece resulting in heating of both electrode surfaces and creating a melt pool of metal which leads to generation of new surfaces on cooling. Physical processes involved in electric discharge and material removal are ...

Numerically Closing the Loop of the Adaptive Optics Sensor: the Validation of the COMSOL Multiphysics® Simulation - new

C. Del Vecchio[1], R. Briguglio[1], A. Riccardi[1]
[1]National Institute for Astrophysics, Arcetri Astrophysical Observatory, Florence, Italy

As any other modelling of a physical behavior, the numerical simulation of the mechanical response of an adaptive secondary mirror requires that the results match the experimental data. Such an agreement was recently demonstrated for the local mirror stiffness of the LBT and VLT Deformable Mirrors; a reliable modeling is a good tool for the extrapolation of the missing optical data (spider ...