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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 ...

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 ...

Design and Analysis of Implantable Nanotube Based Sensor for Continuous Blood Pressure Monitoring

M. Silambarasan, T. Prem Kumar, M. Alagappan, and G. Anju
PSG College of Technology
Tamil Nadu, India

The present work aims to develop a blood pressure sensor using MEMS/NEMS technology. A normal blood pressure detector is used externally, but this work mainly aims for designing an implantable nanotube based sensor for continuous monitoring of blood pressure. The use of COMSOL Multiphysics 4.1 acts as a good platform to develop a nano tube based sensor design by using the MEMS module. The ...

Analysis to Determine Optimum Strain Gauge Locations for SENSEWHEEL - new

T. Suzuki[1], C. Holloway[1], S. Taylor[1]
[1]University College London, London, UK

Manual wheelchair users suffer shoulder pain and injury in the long term because of unconscious overuse. The ‘SENSEWHEEL’, which interposes three identical load cells between pushrim and rear wheel, measures the three components of pushing force Fx, Fy and Fz, and axial torque Tx applied at each load cell. Strain gauges were located on a diaphragm forming one face of the load cell. The ...

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 configurations: ...

Numerical Modeling and Performance Optimization Study of a Diaphragm Pump for Medical Application

I. Lupelli[1], P. Gaudio[1], A. Malizia[1], R. Quaranta[1]
[1]Department of Industrial Engineering, University of Rome “Tor Vergata”, Roma, Italy

In this contribution we present the results of the numerical modeling and performance optimization study of a diaphragm pump for drug infusion. The main objective is to develop a numerical model that replicates the pumping cycle (400ms) and also provides indications about the variation of pumping performance as consequence of the variation of the chamber-diaphragm system geometry, diaphragm ...

Equation-Based Modeling: The Structural Contact Problem Solved by The Velocity Approach

O. Toscanelli, and V. Colla
Scuola Superiore S. Anna, Pisa, Italy

The contact between infinitely rigid body and deformable part is studied using the velocity as a dependent variable. A simple forging case is evaluated. The velocity approach is realized by means of using COMSOL with the Equation-Based Modeling. The contact model evaluated in this work is suitable to model the forging process. For a given mesh and element it is possible to choose the optimum ...

Multiscale Damage Detection in Conductive Composites

R. C. Thiagarajan
ATOA Scientific Technologies Private Limited, Bangalore, India

Conductive Composites such as carbon fiber reinforced composites are increasingly used in safety critical aerospace applications. The catastrophic macro structural failure of composite structures initiates from a micro level failure event such as fiber breaks. The ability to detect damage early on can improve the safety level and reliability of composite structures. A multilevel self-sensing ...

Evaluation of Low-Cycle-Fatigue Life of Solder Joints in Surface Mounting Power Devices by Finite Element Modeling

N. Delmonte[1], F. Giuliani[1], M. Bernardoni[2], P. Cova[1]
[1]Dipartimento di Ingegneria dell'Informazione, Università degli Studi di Parma, Parma, Italy
[2]CDTR - Centre for Device Thermography and Reliability, H. H. Wills Dept. of Physics, University of Bristol, Bristol, United Kingdom

The reliability of solder joints [1,2] is one of the key factors in the determination of the reliability of the high power density electronic converters, being the solder joints both the mechanical, the electrical, and often the thermal connections between the electronic component and the board in which the component is placed. The main mechanism by which solder joints are damaged is thermal ...

Simulation and Analysis of Two Fans Air Speed Match Design in Off-Road Mine Tract Generator Using COMSOL

Y. Shen[1], D. Wu[1]
[1]Beijing University of Science & Technology, Beijing, China

This paper describes a model of self-ventilated generator cooling on a 170 tons off-road mine dump truck. Considering the space restrictions of mine dump truck, the cooling systems for the generator and the in-wheel motors of the rear axle share one air inlet duct. With the action of generator fan and rear duct fan, cooling air from the inlet duct will be divided into two parts to cool the ...