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Simulation of a wind turbine with a bolted lattice tower under consideration of mass distribution and damping

: Rachholz, R.; Woernle, C.; Panwitt, H.; Staschko, R.

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Font-Llagunes, J.M. ; International Center for Numerical Methods in Engineering -CIMNE-; European Community on Computational Methods in Applied Science -ECCOMAS-:
ECCOMAS Thematic Conference on Multibody Dynamics 2015. Online resource : Proceedings of the ECCOMAS Thematic Conference on Multibody Dynamics 2015, Barcelona, June 29 - July 2, 2015
Barcelona, 2015
ISBN: 978-84-944244-0-3
Thematic Conference on Multibody Dynamics <2015, Barcelona>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IPA ()

This research describes the development of a 2 MW wind turbine model under consideration of damping and mass distribution at the tower structure. The wind turbine is a horizontal axis, pitch-controlled wind turbine characterised by a rated power of 2.05 MW and a hub height of 141 m. The multibody model is developed in SIMPACK and applies aerodynamic forces by means of interfaces for AeroDyn and Turbsim [3,6]. The prototype wind turbine is equipped with a lattice tower that is based on a finite element model and built up in Ansys. The Ansys model is generated by an APDL (Ansys Parametric Design Language) text file defined by a MATLAB script in order to enable immediately design modifications. While lattice towers are provided with numerous joints, joint patch damping should be considered in future. Therefore a test stand is introduced and used to investigate the behaviour of a single lap joint. Based on the test stand and the received results a user force element develop ed in SIMPACK is shown to apply the damping forces to the multibody model of the test stand.