Experimental-Analytical Dynamic Substructuring of Ampair Testbed: A State-Space Approach
Paper in proceedings, 2014

The Society for Experimental Mechanics (SEM) Substructuring Focus Group has initiated a research project in experimental dynamic substructuring using the Ampair 600W wind turbine as a testbed. In this paper, experimental as well as analytical models of the blades of said wind turbine are coupled to analytical models of its brackets. The focus is on a state-space based substructuring method designed specifically for experimental-analytical dynamic substructuring. It is shown a) theoretically that the state-space method gives equivalent results to the second order methods under certain conditions, b) that the state-space method numerically produces results equivalent to those of a well-known frequency-based substructuring technique when the same experimental models are used for the two methods and c) that the state-space synthesis procedure can be translated to the general framework given by De Klerk et al.

frequency based substructuring

automatic system identification



experimental-analytical dynamic

wind turbines

component mode synthesis

vibration testing

modal analysis


Mladen Gibanica

Chalmers, Applied Mechanics, Dynamics

Anders Johansson

Chalmers, Applied Mechanics, Dynamics

Anders Liljerehn

Chalmers, Applied Mechanics, Dynamics

Per Sjövall

FS Dynamics

Thomas Abrahamsson

Chalmers, Applied Mechanics, Dynamics

Conference Proceedings of the Society for Experimental Mechanics Series

21915644 (ISSN) 21915652 (eISSN)

Vol. 1 1-14

Subject Categories

Mechanical Engineering