An Elastic and Hyperelastic Material Model of Joint Cartilage - Calculation of the Pressure Dependent Material Stress in Joint Cartilage
T. Reuter, and M. Hoffmann
Research Centre of Medical Technology and Biotechnology
Bad Langensalza, Germany
In this paper we introduce a elastic and hyperelastic model to describe the pressure dependent material stress in joint cartilage. We used the pressure dependent E-modulus E = f(s) to calculate the material stress. E = f(s) is a degree 4 polynomial . The indentor was pressed 0.4 mm into the tissue. The results show that the maximal stress at the contact zone between indentor and cartilage ...
Validation of a Simplified Model to Determine the Long-Term Performance of Borehole Heat Exchanger Fields With Groundwater Advection
S. Lazzari, A. Priarone, and E. Zanchini
University of Bologna, Department DIENCA, Bologna, Italy
University of Genova, Department DIPTEM, Genova, Italy
Finite element simulations performed through COMSOL Multiphysics are used to study the long-term performance of BHE fields placed in a water-saturated porous soil subjected to groundwater movement. The heat transfer problem is written in a dimensionless form and the long-term time evolution of the mean surface temperature of the BHEs, sketched as cylindrical heat sources subjected to a regular ...
C. Gavrila, C. P. Lungu, and I. Gruia
Technical University of Civil Engineering Bucharest, Romania
National Institute for Laser, Plasma and Radiation Physics, Bucharest, Romania
University of Bucharest, Faculty of Physics, Bucharest, Romania
The purpose of this paper is to present a numerical modeling of plasma phenomena in beryllium emissions using COMSOL Multiphysics software. The Beryllium films were deposited on mirror polished fine grain graphite substrates using the Thermionic Vacuum Arc (TVA) technology available at NILPRP – Magurele, Romania. The developed system for thin film deposition using thermionic vacuum arc (TVA) ...
K. Singh, N. Kothari, and S. Choudhary
Electronics and Communication Engineering Department
Geetanjali Institute of Technical Studies
This paper presents the ill-effects of EM exposure through experiment, simulation and modelling using COMSOL Multiphysics. Biological Effects of microwave radiations on living creatures are studied supported with the practical results.
CARCO, Basiano, Milano, Italy
Simulations of more than one type of seal have been done where the deformation and the stress of the seal itself or the pressure on the housing are of interest. According to the deformation of the seal we can modify the housing of the seal or its geometry depending on the design constraints to meet. Stresses on the seal are indicators of which changes have to be implemented on the geometry so to ...
S. Cambon, I. Bogdanov
CHLOE, Bâtiment UFR Sciences et Techniques, Pau Cedex, France
Non-conventional hydrocarbon resources become more and more challenging object for energy producing companies throughout the world. Being already known and long-explored method, the electromagnetically (EM) assisted recovery constitutes a promising idea of technology for deposits of such a kind. COMSOL has been used recently for modeling the thermal multiphase flow through porous media in the ...
P. Alotto, F. Dughiero, F. Bressan, M. Bullo
Università di Padova, Dipartimento di Ingegneria Industriale, Padova, Italy
Computer simulation is mandatory for the optimization of electromagnetic devices. Here we concentrate on two classes of devices operating in the MHz and GHz range, namely microwave ovens and TEM cells for electromagnetic compatibility testing. In particular we concentrate on the issue that numerical results are usually different from the experimental ones and this can be due, among others ...
Università degli Studi di Milano Bicocca, Milano, Italy
We present numerical models and field data that aid understanding of volcano-tectonic processes related to the propagation of inclined sheets and dykes under a stress field resulting from the inflation of a shallow magma chamber. Structural field data from the classical Cuillins cone-sheet complex (Isle of Skye) show that sheets have a constant average dip angle (45°), with pure dilational or ...
G. Mongatti, A. Borelli
Marchesini Group, Pianoro, Italy
In this model a three-dimensional heat transfer analysis was performed by using COMSOL Multiphysics\' Heat Transfer Module. The model is about the heating of a set of vials (Figure 1) in a current of hot air in the laminar regime. We used time dependent studies to predict the thermal behavior of the glass and to estimate the temperatures in the various points of the bottles at various times. ...
J. Molinero, A. Nardi, P. Trinchero
Amphos 21, Barcelona, Spain
Groundwater is a key factor affecting mine operations worldwide. On one hand, both underground and open pit mines need to pump out groundwater in order to proceed with mineral extraction and increase the stability of rock slopes. On the other hand, groundwater abstractions can produce undesired environmental and social impacts, which should be anticipated in the environmental impact assessments ...