Quick Search

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.

Modeling the Effect of Porosity on the Elastic Properties of Synthetic Graphite Using CT Scans and the Finite Element Method

G. Sowa[1], R. Paul[1], R. Smith[1]
[1]GrafTech International Inc., Parma, OH, USA

Predicting the physical properties and performance of carbon and graphite materials based on the microstructure of the finished material is a challenging endeavor. This paper discusses the process and workflow for measuring and analyzing the pore structure of graphite by combining advanced CT image technology with Simpleware’s ScanIP™ software. A stack of scanned CT images are imported into ...

Effects of Solvers on Finite Element Analysis in COMSOL Multiphysics® Software - new

C. Ravi[1]
[1]Siemens Technology and Services Private Limited, Bengaluru, Karnataka, India

Introduction: Solver section of FEA plays a very important role; it takes the input from the preprocessor and solves millions of equations using numerical methods. Capability of any analysis tools can be measured based on the solver. Understanding the nature and operation of various structural solid mechanics solvers is the interest of the present study. Results: Contact pressure is evaluated ...

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 ...

Thermal Stress in a Zero Thermal Expansion Composite

C. Romao, and M. White
Dept. of Chemistry and Institute for Research in Materials
Dalhousie University
Halifax, NS
Canada

A series of 2-D finite element models of a ZrO2-ZrW2O8 composite system were created in COMSOL Multiphysics to study the effect of pores between the matrix (ZrO2) and filler (ZrW2O8) materials. Pores were modeled as ellipses concentric with the filler particles. Seventeen model geometries of varying microstructure were studied in order to determine correlations between microstructural factors ...

Prediction of Temperature and Thermal Stress in Plasma Sprayed Coatings - new

M. Raja[1] , G. Hiremath[1], K. Ramachandran[1], P.V.A. Padmanabhan[2], T.K. Thiyagarajan[2]
[1]Karunya University, Coimbatore, Tamil Nadu, India
[2]Bhabha Atomic Research Centre, Mumbai, Maharashtra, India

Plasma spraying is one of the prominent technologies for wear, corrosion and high temperature resistant coatings. The coating quality is very important to increase the performance of the components as well as to protect the outer surface of the component from external environment. The coating quality characteristics depend on many plasma process parameters. Among these parameters, distribution of ...

Fatigue Damage Evaluation on Mechanical Components under Multiaxial Loadings

R. Tovo[1] and S. Capetta[1]
[1]Dipartimento di Ingegneria, Università degli Studi di Ferrara, Ferrara, Italy

This paper is concerned with the fatigue behavior of complex, three-dimensional, stress concentrations under multiaxial loadings. Starting from the stress field obtained from a linear elastic analysis and taking advantage of the so-called implicit gradient approximation, an effective stress index connected with the material strength is calculated. Besides, this work summarizes a first ...

Optimized Cantilever-to-Anchor Configurations of Buckled Cantilever Plate Structures for Transducer Applications

A. Arpys Arevalo Carreno[1], D. Conchouso Gonzalez[1], I.G. Foulds[1]
[1]King Abdullah University of Science and Technology, Thuwal, Mecca, Kingdom of Saudi Arabia

The mechanical simulation and analysis of the cantilever-to-anchor configuration for an out-of-plane structure used in transducer applications is reported. The polymer-based Buckled Cantilever Plate “BCP” structure, gives the ability to orient an active device from a horizontal to a vertical position, once assembled. In this paper we compare four different cantilever-to-anchor ...

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 ...

Micromechanical Design of Novel Thermal Composites for Temperature Dependent Thermal Conductivity - new

R. C. Thiagarajan[1],
[1]ATOA Scientific Technologies Pvt. Ltd., Bengaluru, Karnataka, India

Materials with an order variable in thermal conductivity as a function of temperature are desirable for thermoelectric heat energy recovery, building thermal insulation and solar thermal applications. Thermal Conductivity is an inherent material property. Engineering the fundamental thermal conductivity needs manipulation at thermal photon level for conventional materials. Engineering thermal ...

A Study of Thermal Stress Distribution Produced During MEMS Packaging

V. Sharma[1], A. K. Jayanthy[1], J. G. Baruah[1], J. V. Prabhu[1], K. Balakrishnan[1]
[1]SRM University, Chennai, Tamil Nadu, India

The analysis performed is categorized into two levels: 1. The thermal stress distribution on the sensing part with the variation in the substrate three glass material with appropriate dimensions and exposures. The reason behind this consideration of different materials is test the compatibility with the crystal. This variation in substrate material and its material properties shows which is ...