Blast Response Studies on Metallic Tube Core Sandwich Panels

International Journal of Civil Engineering

© 2015 by SSRG - IJCE Journal

Volume 2 Issue 6

Year of Publication : 2015

Authors : S. Chaithanya Raja, Dr. J. Rajasankar, Dr. J. Guru Jawahar

10.14445/23488352/IJCE-V2I6P106

How to Cite?

S. Chaithanya Raja, Dr. J. Rajasankar, Dr. J. Guru Jawahar, "Blast Response Studies on Metallic Tube Core Sandwich Panels," SSRG International Journal of Civil Engineering, vol. 2,  no. 6, pp. 25-31, 2015. Crossref, https://doi.org/10.14445/23488352/IJCE-V2I6P106

Abstract:

Blast loading produces enormous amount of energy. It causes devastation effect to the structure that is subjecting to loading. It is essential to mitigate the blast load to make the structure sustainable and safe. Research has been carried out from decades to design protective structural member for mitigating blast loading. Sandwich panels are found out be one of such efficient structural component to be installed for periphery of structure on which blast loading is acting. In the present work effort is made in designing sandwich panel with top and bottom plates. The dimensions of 150 mm×150 mm with 4 square tubes of 12.5 mm×12.5 mm and thickness of tube of 0.6 mm in 2×2 matrix in core portion are provided. Impulse of 55 Ns is applied for duration of 17.32 μs normal to the top plate of sandwich panel. Suitability of the sandwich panel model for the present loading condition is checked. Finite element (FEM) model of the panel is modelled in FEM based software ABAQUS/CAE and analysis is done. Parametric studies are carried out by varying the thickness of square tube and spacing between the square tubes. The efficiency of sandwich panels are checked in terms of Reaction force per unit area (kN/mm2 ) and Energy (kJ) absorbed by top plate and core portion. An important conclusion from the parametric studies is drawn i.e., increase in the tube spacing beyond an optimum value results in excessive deformation without progressive lobe formation. From conclusions the model that is capable of taking load effectively is finalized.

Keywords:

Blast protection, Tube core claddings, Blast load, Thickness, Spacing, Energy absorption, Reactions.

References:

[1] S. Bhardwaj, Q. N. Mehraj., A Review on foundation of buildings and structures, SSRG International Journal of Civil Engineering (SSRG – IJCE), Issue 3, Vol 2, pp. 4-9, 2015.
[2] S. Guruprasad, A. Mukherjee., Layered sacrificial cladding under blast loading, International journal of impact Engineering, Vol 24, pp. 957-973, 2000.
[3] W. Abramowicz, N. Jones., Dynamic progressive buckling of circular and square tubes, International journal of impact Engineering, Vol 4, pp. 243-270, 1986.
[4] C.C. Liang, M.F. Yang, P.W. Wu., Optimum design of metallic corrugated core sandwich panels subjected to blast loads, International journal of Impact Engineering, Vol 34, pp.134-156, 2007.
[5] M.D. Theobald, G.N. Nurick., Numerical investigation of the response of sandwich-type panels using thin-walled tubes subjected to blast loads, International journal of Impact engineering,  Vol 34, pp.134-156, 2007.
[6] M.D. Theobald, G.N. Nurick., Experimental and numerical analysis of tube core claddings under blastloads, International journal of Impact engineering, Vol 37, pp.333-348, 2010.
[7] X. Zhang, G. Cheng, Z. You, H. Zhang., Energy absorption of axially compressed thin-walled square tubeswith patterns, International journal of Thin-Walled structures, Vol 45, pp. 737-746, 2007.
[8] S.R. Reid, Plastic deformation mechanisms in axially compressed     metal tubes used as impact energy absorbers, International journal of Mechanical sciences, Vol 35, pp. 1035-1052, 1993.
[9] A.A.N. Aljawi, Axial crushing of square steel tubes, The 6th Saudi Engineering conference, Vol 3, pp.3-18, 2002.
[10] S. Chung Kim Yuen, G.N. Nurick and H.L. Witbeen, The response of sandwich panels made of thin walled tubes subjected to axial load, International journal of protective structures, Vol 2, pp. 477-498, 2011.
[11] Y. Chi, G.S. Langdon, G.N. Nurick., The influence of Core height and  face plate thickness on the response of honeycomb sandwich panels subjected to blast loading, Materials and design, Vol 31, pp.1887-1899, 2010.
[12] M.M. Younes, Finite Element Modeling of crushing behaviour of thin tubes with various cross sections, 13th International conference on Aerospace sciences and aviation technology, Vol ST 34, pp. 7-19, 2009.
[13] G.F.Kinney and K.J.Graham., Explosive shocks in air, Springer Verlag, New York, 1985.
[14] Z. Zhang, B. Andrawes, J.R. Edwards., Parametric study on the distribution of longitudinal load in railway track under dynamic wheel loading using finite element analysis, SSRG International Journal of Civil Engineering (SSRG – IJCE), Issue 5, Vol 2, pp. 28-41, 2015.
[15] S.T. Marias, R.B. Tait, T.J. Cloete,G.N. Nurick., Material testing at high strain using the split Hopkinson pressure bar , Latin Am J Solids Struct; 1: pp. 319-39, 2004.
[16] P.Nannuci, N.S. Marshall, G.N. Nurick., A computational investigation of the progressive buckling of square tubes with geometric imperfections, In: Lok TS., Editors. Third Asia- Pacific conference on shock and Impact loads on structures under shock and impact, pp. 155-168, 1998.
[17] N.Anandavalli, J.Rajasankar., Effectiveness of tube core sandwich panel in structural protection against blast loads, 5th International Congress on Computational Mechanics & Simulation, pp. 749-759, 2014.