A comparative experimental study on structural and interface damping approaches for vibration suppression purposes

Yi Liu; Alberto Sanchez; Markus Zogg; Paolo Ermanni

doi:10.1117/12.848062

12 April 2010 A comparative experimental study on structural and interface damping approaches for vibration suppression purposes

Yi Liu, Alberto Sanchez, Markus Zogg, Paolo Ermanni

Author Affiliations +

Proceedings Volume 7643, Active and Passive Smart Structures and Integrated Systems 2010; 764335 (2010) https://doi.org/10.1117/12.848062
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

Dynamic loadings in automotive structures may lead to reduction of driving comfort and even to failure of the components. Damping treatments are applied in order to attenuate the vibrations and improve the long term fatigue behavior of the structures. This experimental study is targeting applications in floor panels that are mounted to the loadcarrying primary structure of the vehicle. The objective is to reach outstanding damping performance considering the stringent weight and cost requirement in the automotive industry. An experimental setup has been developed and validated for the determination of the damping properties of structural specimens also considering interface damping effects. This contribution is structured in three main parts: test rig design, experimental results and discussion. Reliable and easy-to-use devices for the characterization of the damping properties of specimens between 200×40 mm² and 400×400 mm² are not available "on the shelf". In this context, we present a flexible experimental set-up which has been realized to (1) support the development of novel damping solutions for multi-functional composite structures; (2) characterize the loss-factor of the different damping concepts, including boundary effects. A variety of novel passive and active damping treatments have been investigated including viscoelastic, coulomb, magnetorheological (MR), particle, magnetic and eddy current damping. The particle, interface as well as active damping systems show promising performance in comparison to the classical viscoelastic treatments.

Citation Download Citation

Yi Liu, Alberto Sanchez, Markus Zogg, and Paolo Ermanni "A comparative experimental study on structural and interface damping approaches for vibration suppression purposes", Proc. SPIE 7643, Active and Passive Smart Structures and Integrated Systems 2010, 764335 (12 April 2010); https://doi.org/10.1117/12.848062

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