Viscoelastic Mechanical Analysis for High Temperature Process of a Soda-Lime Glass Using COMSOL Multiphysics
Material and Production Engineering Department, University of Naples “Federico II”, Naples, Italy
Glasses are widely used in the modern industry. For high temperature the glass behaves very much like a Newtonian liquid with temperature-dependent viscosity. The goal of this study is to set a numerical procedure in order to study the glass forming process of soda-lime glasses used in the automotive field by means numerical simulations.
Multiphase Transport with Large Deformations Undergoing Rubbery-Glassy Phase Transition: Applications to Drying
T. Gulati, A. Datta
Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, USA
Drying of biomaterials such as foodstuffs involves mass, momentum and energy transport along with large shrinkage of the porous material, which have significant effects on their final quality. Foodstuffs exhibit non-linearity when undergoing large deformations that affect the transport process in a critical way. Thus, it becomes important to perform a two-way coupling of the multiphase transport ...
Finite Element Convergence and Speed-Up Studies Using COMSOL Multiphysics and LiveLink™ for MATLAB® with Large Assembly Models
H. Pourzand, A.H. Aziz, A. Singh
Pennsylvania State University, State College, PA, USA
COMSOL Multiphysics along with its LiveLink™ for MATLAB® is used to investigate the needed number of elements and the required order of Lagrangean p element for a number of different simulation models. For this task, convergence study, speed up testing and interactive meshing is performed on a large assembly model which is also imported using the LiveLink™ for SolidWorks®. As a test bench, ...
A. Corigliano, A. Courard, G. Cocchetti, P. Gagliardi, L. Magagnin, R. Vallauri, D. Acconcia
Politecnico di Milano, Milano, Italy
Technoprobe, Cernusco Lombardone, Italy
The paper presents recent results concerning the experimental mechanical characterization, the numerical modeling and the design of micro-needles used in the construction of probe heads for wafer testing. A fully coupled electro-thermal model was created using COMSOL and combined to a research-oriented thermo-mechanical Finite Element (FE) code in order to accurately reproduce the micro-needle ...
K. M. V. Swamy, B. G. Sheeparamatti, G. R. Prakash 
Department of Electronics and Communication, Basaveshwara Engineering College, Bagalkot, Karnataka, India
This study is performed to know which central plate geometry is best suited for electrostatically actuated switch. The simulation is carried out in COMSOL Multiphysics, where user is free to model the geometry without depth knowledge about geometrical dependency of electrostatic. The study of the centrally suspended geometrical models such as circle, square and rectangle suspended by two short ...
T. Gulati, A. K. Datta
Department of Biological & Environmental Engineering, Cornell University, Ithaca, NY, USA
Puffing of biomaterials involves mass, momentum and energy transport along with large volumetric expansion of the material. Development of physics-based models that can describe heat and moisture transport, rapid evaporation and large deformations can help understand the puffing process. In this context, a fundamentals based study of salt-assisted puffing of rice is described. A multiphase model ...
D. Hu, F. Zhang, H. Zhou, and J. Shao
LML, UMR8107, CNRS, University of Lille I, Lille, France
School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan, China
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China
A lixiviation-mechanical coupled model is developed for fiber reinforced concrete within this framework; both the influence of chemical degradation on short and long term mechanical behavior and the influence of mechanical loading on the diffusion coefficient can be considered. The elastic mechanical properties are written as function of chemical damage. A Drucker–Prager typed criterion with ...
R. Tovo and S. Capetta
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 ...
T. Müller, and H. Haase
Universität Hannover, Institut für Grundlagen der Elektrotechnik, Hannover
Bei herkömmlichen Verbrennungsmotoren werden die Ein- und Auslassventile für Kraftstoff-Luft-Gemisch und Abgase nach wie vor rein mechanisch durch Nockenwellen gesteuert. Die Verwendung voneinander unabhängiger Ventilaktoren ermöglicht eine hohe Effizienzsteigerung. Zur Abschätzung des konstruktiven Aufwands eines Aktors auf Basis magnetischer Formgedächtnismetalle wird ein einfaches ...
M.A. Rojas, and V. Grechka
 University of Houston
 Shell International E&P
We present static and dynamic computations of the apparent properties for stacks of horizontal isotropic layers (VTI symmetry). The effective stiffness tensors of such media are given by the Backus theory for statics in the limit of zero thicknesses of the constituent layers. We used COMSOL Multiphysics to verify the theoretical static bounds for these effective stiffnesses.