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Dynamics Laboratory

The dynamics laboratory is engaged in, among other things, the following topics:

• System identification methods based on blind source separation technique

• Pedestrian induced vibrations in footbridges, floor and stairs

• Active and passive vibration control (Schlaich, Bleicher (2011)) and damping of structures

• Aspects of serviceability and comfort

• Inverse Engineering

• Lateral vibrations of railway bridges

• Vibration measurements

In the Peter-Behrens-hall of the Institute of Civil Engineering represents an about 13m long stress ribbon bridge for research and teaching. Due to its low weight, this bridge reacts noticeably with pedestrian induced vibrations. It is an excellent test bed to investigate pedestrian induced vibrations in lightweight constructions. Furthermore, an active vibration control system was realized at this Stress Ribbon bridge by Bleicher (Schlaich, Bleicher, Schauer (2011)). There pneumatic artificial muscles are specifically controlled, in order to reduce and to control the vibration in the footbridge.

The students can get knowledge and experience from the research activities in the teaching module “Entwerfen für dynamische Einwirkungen”. Furthermore, the students will be guided through an internship for vibration measurements on the stress ribbon bridge. The necessary tools will be taught in order to take into account the issue of structural vibration in the design phase of a structure.

Project Staff

Project Leader

  • Dr.-Ing. Arndt Goldack

Research Assistant

  • Xiaohan Liu, M.Sc.

Literature

· Meinhardt, C.; Goldack, A. (2014): Dynamic response of lightweight bridges and control strategies to reduce deck accelertions. In: Proceedings of Footbridge 2014.

· Simon, P.; Goldack, A.; Sadhu, A.; Narasimhan, S. (2014): Mises: A new Modal Idenification Tool for pedestrian bridges. In: Proceedings of Footbridge 2014.

· Sadhu, A.; Goldack, A.; Narasimhan, S. (2014): Modal identification of flexible structures using improved multivariate empirical mode decomposition. In: Proceedings of Footbridge 2014.

· Sadhu, A.; Goldack, A.; Narasimhan, S. (2014): Blind Modal Identification of a Pedestrian Bridge under narrowband disturbances. In: Proceedings of Eurodyn 2014

· Sadhu, A.; Narasimhan, S.; Goldack, A. (2013): Decentralized Modal Identification of a Pony Truss Pedestrian Bridge using Wireless Sensors. In: J. Bridge Eng., 10.1061/(ASCE)BE.1943-5592.0000552

· Keil, A (Hrsg.); Goldack, A., Linden, S.; Sander, C. (2012): Fußgängerbrücken. Beitrag zur Dynamik von Fußgängerbrücken. Detail Praxis, S. 10,11,19-15. ISBN 978-3-920034-63-8

· Schlaich, M.; Goldack, A.; Nier, M. (2012): Die mehrfeldrige Spannbandbrücke Slinky Springs to Fame in Oberhausen. In: Stahlbau 81 (2012), Heft 2, S. 108 - 115

· Goldack, A. (2011): Natural frequencies and mode shapes of towers for solar updraft power plants. In: Eurodyn 2011, Leuven, Belgium, ISBN 978-90-760-1931-4

· Schlaich, M.; Bleicher, A.; Schauer, T. (2011): Multimodal and multivariable active vibration control for a footbridge – modal based design and experimental validation. In: Proceedings of the 8th International Conference on Structural Dynamics, EURODYNE 2011, Leuven: Katholieke Universiteit, ISBN 978-90-760-1931-4 (DVD).

· Heinemeyer et al. (2009): Design of Leightweight Footbridges for Human Induced Vibrations - Background document in support to the implementation, harmonization and further development of the Eurocodes. JRC-ECCS 2009, Luxemburg, ISBN 978-92-79-13387-9

· Magalhäes, F.; Cunha, A.; Caetano, E.; Butz, C.; Goldack, A. (2006): Output-only Modal Identification of Lively Footbridges. In: IABMAS  06, Porto, 2006

· Butz, C.; Magalhäes, F.; Cunha, A.; Caetano, E.; Goldack, A. (2005): Experimental Characterization of the dynamic behaviour of lively footbridges. In: Footbridge 2005, Second International Conference

· Li, X.; Liu, X. et al. (2013): Influences of Soil-Structure Interaction on Coupled Vibration of Railway Bridge and Vehicles: Theoretical and Experimental Study. In: Advances in Structural Engineering, Vol.16, No.8: 1355-1364

· Li, X.; Liu, X. et al. (2011). Coupled Vibration Analysis of Railway Continuous Beam Bridge and Vehicles with Soil-Structure Interaction. In: Proceedings of the 1st International Workshop on High-speed and Intercity Railways 2011

 

 

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