[en] Two of the most popular vibration testing methods for nonlinear structures are control-based continuation and phase-locked-loop testing. In this paper, they are directly compared on the same benchmark system, for the first time, to demonstrate their general capabilities and to discuss practical implementation aspects. The considered system, which is specifically designed for this study, is a slightly arched beam clamped at both ends via bolted joints. It exhibits a pronounced softening-hardening behavior as well as an increasing damping characteristic due to the frictional clamping. Both methods are implemented to identify periodic responses at steady-state constituting the phase-resonant backbone curve and nonlinear frequency response curves. To ensure coherent results, the repetition variability is thoroughly assessed via an uncertainty analysis. It is concluded that the methods are in excellent agreement, taking into account the inherent repetition variability of the system.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Abeloos, Gaëtan ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Müller, Florian; University of Stuttgart > Institute for Aircraft Propulsion Systems
Erhan, Ferhatoglu; Politecnico di Torino > Department of Mechanical and Aerospace Engineering
Maren, Scheel; University of Stuttgart > Institute for Aircraft Propulsion Systems
Collette, Christophe ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Active aerospace struct. and adv. mecha. systems
Kerschen, Gaëtan ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Brake, Matthew; Rice University > Department of Mechanical Engineering
Tiso, Paolo; ETH Zurich > Department of Mechanical and Process Engineering
Renson, Ludovic; Imperial College London > Department of Mechanical Engineering
Krack, Malte; University of Stuttgart > Institute for Aircraft Propulsion Systems
Language :
English
Title :
A Consistency Analysis of Phase-Locked-Loop Testing and Control-Based Continuation for a Geometrically Nonlinear Frictional System
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