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27 April 2007 Shear thickening fluids as a tunable damping element: experimental results and modeling
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Highly concentrated silica suspensions are well-known for their pronounced shear-thickening behavior beyond a certain shear rate or stress, at which a significant and simultaneous increase of the stiffness and damping properties are observed. In the present work, the integration of shear-thickening fluids (STFs) into composite structures has been investigated with the aim of tuning part stiffness and damping capacity under dynamic deformation. Results from oscillatory rheological measurements on an STF were correlated with results from vibrating beam tests (VBT) on model sandwich structures containing layers of the same STF sandwiched between polyvinyl chloride (PVC) beams. The effect of STF composition was investigated, and finite element analysis (FEA) was used to predict the dynamic behavior of the PVC-STF sandwich structure numerically.
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Christian Fischer, Abdelkrim Bennani, Christopher J. G. Plummer, Véronique Michaud, Pierre-Etienne Bourban, Eric Jacquelin, and Jan-Anders E. Månson "Shear thickening fluids as a tunable damping element: experimental results and modeling", Proc. SPIE 6525, Active and Passive Smart Structures and Integrated Systems 2007, 652513 (27 April 2007);

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