Open AccessA method for updating joint parameters in medium-frequency vibrations
Author(s) -
Olivier Dorival,
Philippe Rouch,
Olivier Allix
Publication year - 2008
Publication title -
european journal of computational mechanics
Language(s) - English
Resource type - Journals
eISSN - 2642-2085
pISSN - 2642-2050
DOI - 10.13052/remn.17.713-723
Subject(s) - dissipative system , joint (building) , vibration , finite element method , dissipation , relation (database) , stiffness , focus (optics) , computer science , energy (signal processing) , energy flow , constitutive equation , mathematics , algorithm , structural engineering , physics , engineering , acoustics , statistics , optics , quantum mechanics , thermodynamics , database
Joints between substructures play a significant role in the vibrational behavior of complex structures because they govern energy flow and most of the dissipative phenomena. In order to identify joint models, this paper proposes a robust updating method which was initially based on studies of the error in constitutive relation in relation to finite element model updating. Here, it is redesigned in order to focus on joint models in medium-frequency problems. In order to do that, we use an alternative numerical approach called the Variational Theory of Complex Rays (VTCR). After introducing the new formulation, the paper analyzes the effectiveness of the approach in identifying a joint’s stiffness and damping.