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List of EUROMECH Colloquia in 2012

• YEARS:
• 2012
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• 1999

• [514] New trends in Contact Mechanics

  Date:	May 2012
  Location:	Marseille, France
  Contact:	Chairperson: Dr. Michel Raous Directeur de Recherche CNRS Laboratoire de Mécanique et d’Acoustique 31, chemin Joseph Aiguier 13402 Marseille Cedex 20, France Phone : +33 4 91 16 40 53 Fax : + 33 4 91 16 44 81 Email : raous@lma.cnrs-mrs.fr Co-chairperson: Prof. Peter Wriggers Institut für Kontinuumsmechanik Leibniz Universität Hannover Appelstr 11 D 30167 Hannover, Germany Phone : + 49 511 762 2220 Email : wriggers@ikm.uni-hannover.de
  Information:	Although considerable progress was achieved in the last fifteen years on Contact Mechanics, many problems are still open on contact and interface modeling, both on the theoretical and engineering aspects. They concern especially contact dynamics, stability, multilevel approaches, existence and (non) uniqueness of solutions, damage in the interfaces and efficient and robust numerical methods for large scale contact problems. The scope of this Colloquium is to gather specialists of these various fields in order to reinforce the interchanges between the communities on these different topics and to stress the complementarity of the contributions for mutual progress on contact modelling.

• [524] Multibody system modelling, control and simulation for engineering design

  Date:	February-March 2012
  Location:	Ensched, The Netherlands
  Contact:	Chairperson: Prof. Ben Jonker University of Twente, Faculty CTW Mechanical Automation P.O. Box 217 – Building Horst 7500 AE Enschede, The Netherlands Email : J.B.Jonker@utwente.nl Co-chairpersons: Prof. Werner Schiehlen Institute of Engineering and Computational Mechanics, University of Stuttgart Germany
  Information:	The colloquium addresses the analyses of multibody system dynamics for advanced technologies and engineering design for which a numerical efficient approach is crucial. In particular a designer can take significant advantage of model based insight. The numerical methods applied for multibody systems dynamics have proved to offer solutions for the analysis of systems with interconnected rigid and flexible bodies subject to various loads and undergoing complex motion. While high accuracy can be obtained with extended models including a large number of degrees-of-freedom, there is a clear need for numerically efficient techniques that still offer an adequate level of accuracy. E.g. the optimisation of the design parameters usually implies that a large number of systems with varying parameters have to be analysed in a short time. The modelling techniques applied for this purpose should provide fast simulations of the relevant system’s behaviour which exhibits geometric non-linearities. Depending on the application area, multibody dynamic analysis has to be coupled to other relevant physical domains to address e.g. electrical and thermal effects or fluid-structure interaction. Mechatronic systems are usually modelled as multibody systems subject to sophisticated non-linear control. Model order reduction techniques are required for control design and to increase the computational speed. The goal of this colloquium is to provide a platform for discussions on the relation between multibody systems analysis tools and the requirements needed for design. Topics are: • Numerically efficient multibody system dynamics analyses; • Kinematic and dynamic analysis of exact constraint, underconstraint and overconstraint mechanical systems; • Reduced order modelling; • Mechatronic design and control systems; • Multiphysical modelling; • Contact and impact modelling; • Parameter optimisation and manufacturing tolerances; • Application to Micro-Electro-Mechanical Systems (MEMS), biomechanics

• [528] Wind Energy and the impact of turbulence on the conversion process

  Date:	April 2012
  Location:	Oldenburg, Germany
  Contact:	Chairperson: Dr. Joachim Peinke Institute of Physics & ForWind University of Oldenburg D 26111 Oldenburg, Germany Email: peinke@uni-oldenburg.de Co-chairpersons:  Prof. Stefan Ivanell Cramérgatan 3 Gotland University SE-621 67 Visby, Sweden Ph: +46 498 299733 Email: Stefan.Ivanell@hgo.se
  Information:	The wind energy conversion process is in first line a fluid mechanical problem. Wind conditions on small, medium and and large scales are characterized by turbulence thus it becomes more and more important to handle properly the impact of turbulence on the wind energy conversion process. The aspects range from meteorological aspects- like LES modelling of wind flow conditions in complex terrain to aspects of short time changing wind conditions for the emergence of stall effects. There is a big need to transfer advanced methods from basic fluid mechanics to the application of wind energy. Thus it is intended by this meeting to bring together experts from EUROMECH and from the new growing Wind energy community. Particular topics will be CFD with focus on LES. Advances in the simulation of wind conditions in complex terrain as well as simulations of the flow in and behind a wind park. Flow around a wind turbine. This topic is approached from different directions. Different CFD codes are in use to resolve the unsteady flow conditions around a moving rotor blade. Basis of many approaches are the measurement data from the MEXICO project. At the same time different experimental approaches are currently under the way, ranging from small modell experiments in wind tunnels to free field measurements with LIDAR. Dynamic stall is on of the central aspects of the flow situation around roto blades if a wind turbine. Turbulent inflow conditions. The dynamics of a wind turbine is not only determined by its own flow effects but also by the highly turbulent inflow conditions. There is a big demand for good synthetic turbulent inflow conditions for numerical simulations as well as for experimental studies. Modes of turbulent wind fields as well as the uses of active grids in wind tunnels are actually investigated. Flow control. As a consequence of the turbulent inflow conditions and it changing working conditions for a blade the interest in active control as used fro airplanes is actually increasing. Effects of turbulence on the wind turbine are manyfold, ranging from oscillating loads, vibrating modes of mechanical parts to highly fluctuating power generation. Here we want to focus on effects which can be traced back to the turbulent nature of the wind conditions.