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Dynamic compressive behaviour of sandwich panels with lattice truss core filled by shear thickening fluid

Gu, Z. P. and Wu, X. Q. and Li, Q. M. and Yin, Q. Y. and Huang, C. G. (2020) Dynamic compressive behaviour of sandwich panels with lattice truss core filled by shear thickening fluid. International Journal of Impact Engineering, 143 . Art. No. 103616. ISSN 0734-743X. https://resolver.caltech.edu/CaltechAUTHORS:20200522-105959456

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Abstract

The compressive behaviour of sandwich panels with lattice truss core filled by shear thickening fluid (SPLTC-STF) at high strain-rates is performed analytically and numerically. Firstly, a hydrodynamic constitutive model for the shear thickening fluid (STF) involving shear thinning, shear thickening, and hydrostatic compressibility is undertaken to describe the dynamic behaviour of the STF. Then an analytical model based on the squeezing flow of viscous fluids is proposed. The squeezing resistance of the STF between the two panels of the SPLTC under various loading velocities is analyzed using a fluid-structure interaction (FSI) simulation, by which the constitutive parameters of the STF are obtained. Finally, the dynamic response of the SPLTC-STF involving buckling and post-buckling of core struts in the STF is investigated using the FSI method. The enhanced energy absorption capacity of the SPLTC-STF observed in Ref [1] is numerically interpreted. The effects of shear thickening behaviour of STF on the dynamic response of SPLTC-STF are predicted, providing a method of optimal design for STF filled sandwich panels over a wide range of impulses for dynamic energy absorption.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.ijimpeng.2020.103616DOIArticle
Additional Information:© 2020 Elsevier Ltd. Received 22 January 2020, Revised 24 April 2020, Accepted 10 May 2020, Available online 22 May 2020.
Subject Keywords:Dynamic compressive behaviour; Sandwich panels with lattice truss core; Shear thickening fluid; Hydrodynamic constitutive model; Analytical model; Fluid-structure interaction
Record Number:CaltechAUTHORS:20200522-105959456
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200522-105959456
Official Citation:Z.P. Gu, X.Q. Wu, Q.M. Li, Q.Y. Yin, C.G. Huang, Dynamic compressive behaviour of sandwich panels with lattice truss core filled by shear thickening fluid, International Journal of Impact Engineering, Volume 143, 2020, 103616, ISSN 0734-743X, https://doi.org/10.1016/j.ijimpeng.2020.103616. (http://www.sciencedirect.com/science/article/pii/S0734743X20300762)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103401
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 May 2020 18:06
Last Modified:02 Jun 2020 17:46

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