File:295 gro Stuttgart IMAC2014.pdf

Model Updating of the Ampair Wind Turbine Substructures

	J. Gross, T. Oberhardt, P. Reuss, L. Gaul, University of Stuttgart
	

The modified Ampair 600 is a small size wind turbine which acts as a model to apply substructuring methods in simulation and experiment. The assembly consists of several substructures having very different material properties. Since the parameters of these materials are unknown, model updating is applied to the substructures to obtain validated finite element models. Based on experimentally determined modal parameters the finite element models are adapted to achieve acceptable vibration behavior. Therefore, an objective function consisting of the deviation of the eigenfrequencies and eigenvectors is used to determine Young's modulus, density and Poisson's ratio of each material. In this contribution the finite element models of the substructures are presented. The models are established from CAD models based on manual measurements of the geometry. Identified parameters are given and the resulting correlation is considered.