Citation:
Mares C, Miguez ME. (2012) Model updating of a helicopter stub wing. In: 25th International Conference on Noise and Vibration Engineering 2012, ISMA 2012, including USD 2012: 4th International Conference on Uncertainty in Structure Dynamics, 17-19 September 2012, pp. 2039-2046
Abstract:
In this paper we describe the process of optimization for the structural model of a helicopter stub-wing
based on experimental data. The wing dynamics is updated using the ground vibration tests within the
0-80Hz frequency range and a detailed discussion is carried out to present the modeling errors and the
specific finite element analysis leading to an improved dynamic behaviour. Because the main objective for
model updating exercises of aeronautical structures is the prediction of the dynamic behavior in flight, as
well as the effect of configuration changes, a set of in-flight measurements is determined with the
objective to be used for the derivation of a representative model. A preliminary analysis of the model
quality to be used subsequently in flight test conditions is carried out.