Presentazioni e Articoli Tecnici

In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.

Structural Evaluation of a Hydraulic Loader Crane Using COMSOL Multiphysics® Software - new

A. Braun[1], A. Moura[1]
[1]Feevale University, Novo Hamburgo, RS, Brazil

A hydraulic loader crane (HLC) is a machine used for cargo handling. It's structural project is complex due to several requirements. In this case, validation with simulation is advantageous. The objective of this paper is to evaluate the stresses of a HLC and compare it with results obtained from structural calculation according to DIN EN 12999 standard. The simulation's results obtained with ...

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 ...

Shearing of the Fiber-Matrix Composite Material and Elastic Properties of Unidirectional Ply

D. Remaoun, and A. Boutaous
Département de Physique, Université des Sciences et de la Technologie, Oran, Algérie

The present work aims to describe the behavior of the interface using the method of load transfer between fiber and matrix in a composite material. Our contribution was first to simulate the mechanical behavior of a composite, for a given radius of the fiber was able to automate the result for different rays thus different proportions of the reinforcement, the simulation was done with software ...

Time-Dependent Thermal Stress and Distortion Analysis During Additive Layer Manufacturing, by Powder Consolidation by Laser Heating

M.S. Yeoman[1], J. Sidhu[2]
[1]1. Continuum Blue Ltd., Tredomen Innovation & Technology Park, Tredomen, Ystrad Mynach, United Kingdom
[2]BAE Systems, Advanced Technology Centre, Bristol, United Kingdom

A time-dependent COMSOL Multiphysics model of an additive manufacture process, which uses powder consolidation by laser heating was developed, providing a platform to better understanding the manufacture process & provide a tool to reduce resulting distortion & optimization of an additive manufacture process. The model simulates a high intense laser energy source moving along a pre-defined time ...

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 ...

Modeling and Simulation of High Sensitivity CMOS Pressure Sensor Using Free Boundary Circular Diaphragm Embedded on Ring Channel Shaped MOSFET - new

S. Joy[1], T. Tom[1]
[1]Rajagiri School of Engineering and Technology, Kochi, Kerala, India

Sensors have diverse applications ranging from the medical field to space exploration. They convert physical parameters such as temperature, pressure, humidity etc. into an electrical output. The discovery of piezoresistivity property of silicon and germanium led to miniaturization of pressure sensors. Improvement in the sensitivity is the major factor to be considered while designing pressure ...

Modeling and Simulation of High Sensitivity CMOS Pressure Sensor Using Free Boundary Circular Diaphragm Embedded on Ring Channel Shaped MOSFET

S. Joy[1], T. Tom[1]
[1]Rajagiri School of Engineering and Technology, Kochi, Kerala, India

Sensors have diverse applications ranging from medical field to space explorations. They convert physical parameters such as temperature, pressure, humidity etc: - into an electrical output. The discovery of piezoresistivity property of silicon and germanium led to miniaturization of pressure sensors. Improvement in the sensitivity is the major factor to be considered while designing pressure ...

Modelling of Lintel-Masonry Interaction Using COMSOL

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

An attempt was made, as described in this paper, to assign material properties like shear strength and modulus of elasticity randomly. In this way, the behaviour of a masonry wall with a prefabricated concrete lintel was experimentally tested and simulated using COMSOL. The paper confirms the possible use of COMSOL for modelling lintel-masonry interaction, including variation of mechanical ...

Dynamics of Slender Structures

K. Lund
Kurt Lund Consulting, Del Mar, CA , USA

The present work formulates the dynamics of a slender structure as a long beam. This results in a PDE that is fourth-order in space, and second order in time. In COMSOL the coupling method is used to decompose this problem into two second-order equations, one for displacements, and one for bending moments, which are then solved to obtain frequencies and mode shapes. For verification of ...

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 combinations ...

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