Response of Curved Sandwich Panels Subjected to Blast Loading
Publication: Journal of Performance of Constructed Facilities
Volume 25, Issue 5
Abstract
Curved sandwich panels with two aluminium face sheets and an aluminium foam core under air blast loadings were investigated experimentally and numerically. Specimens with two values of radius of curvature and different core/face sheet configurations with the same projected area were tested for three blast intensities. All four edges of the panels were fully clamped. The experiments were carried out by a four-cable ballistic pendulum with corresponding sensors. The impulse acting on the front face of the assembly, the deflection history at the center of the back face sheet, and the strain history at some characteristic points on the back face were obtained. Then the deformation/failure modes of specimens were classified and analyzed systematically. The commercial software LS-DYNA was employed to simulate those physical processes. The finite-element (FE) model was validated by the data from experiments. Detailed deformation and energy dissipation mechanisms were further revealed by the FE models. The valuable experimental data and results from FE models show that the initial curvature of a curved sandwich panel changes the deformation/collapse mode with an extended range for bending-dominated deformation mode, which suggests that the performance of the sandwich shell structures slightly exceeds that of both their equivalent solid counterpart and a flat sandwich plate in certain blast intensity ranges.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The authors wish to acknowledge with thanks the financial support from the Australian Research Council (ARC) through Discovery Grant No. ARC10572100 and the National Natural Science Foundation of China (NSFC) under Project NNSFC11028206.
References
Bulson, P. (1997). Explosive loading of engineering structures, E&FN Spon, London.
Farshad, M. (1992). Design and analysis of shell structures, Kluwer Academic, Boston.
Enstock, L. K., and Smith, P. D. (2007). “Measurement of impulse from the close-in explosion of doped charges using a pendulum.” Int. J. Impact Eng., 34(3), 487–494.
Fleck, N., and Deshpande, V. (2004). “The resistance of clamped sandwich beams to shock loading.” J. Appl. Mech., 71(3), 386–401.
Hanssen, A. G., Enstock, L., and Langseth, M. (2002). “Close-range blast loading of aluminium foam panels.” Int. J. Impact Eng., 27(6), 593–618.
Hause, T., and Librescu, L. (2007). “Dynamic response of doubly-curved anisotropic sandwich panels impacted by blast loadings.” Int. J. Solids Struct., 44(20), 6678–6700.
Held, M. (1999). “Impulse method for the blast contour of cylindrical high explosive charges.” Propellants Explos. Pyrotech., 24(1), 17–26.
Hohe, J., and Librescu, L. (2003). “A nonlinear theory for doubly curved anisotropic sandwich shells with transversely compressible core.” Int. J. Solids Struct., 40(5), 1059–1088.
Hohe, J., Librescu, L., and Yong Oh, S. (2006). “Dynamic buckling of flat and curved sandwich panels with transversely compressible core.” Compos. Struct., 74(1), 10–24.
Hutchinson, J. W., and He, M. Y. (2000). “Buckling of cylindrical sandwich shells with metal foam cores.” Int. J. Solids Struct., 37(46–47), 6777–6794.
Hutchinson, J. W., and Xue, Z. (2003). “Preliminary assessment of sandwich plates subject to blast loading.” Int. J. Mech. Sci., 45, 687–705.
Ismail, M. M., and Murray, S. G. (1993). “Study of the blast waves from the explosion of nonspherical charges.” Propellants Explos. Pyrotech., 18(3), 132–138.
Kalamkarov, A. L., Saha, G. C., and Georgiades, A. V. (2007). “General micromechanical modelling of smart composite shells with application to smart honeycomb sandwich structures.” Compos. Struct., 79(1), 18–33.
Lu, G., and Yu, T. X. (2003). Energy absorption of structures and materials, Woodhead, Cambridge, UK.
Meo, M., Vignjevic, R., and Marengo, G. (2005). “The response of honeycomb sandwich panels under low-velocity impact loading.” Int. J. Mech. Sci., 47, 1301–1326.
Mines, R., Worrall, C., and Gibson, A. (1998). “Low velocity perforation behaviour of polymer composite sandwich panels.” Int. J. Impact Eng., 21(10), 855–934.
Moriarty, K., and Goldsmith, W. (1993). “Dynamic energy absorption characteristics of sandwich shells.” Int. J. Impact Eng., 13(2), 293–317.
Nurick, G. N., and Martin, J. B. (1989). “Deformation of thin panels subjected to impulsive loading-a review. Part II: Experimental studies.” Int. J. Impact Eng., 8(2), 171–186.
Qiu, X., Deshpande, V. S., and Fleck, N. A. (2003). “Finite element analysis of the dynamic response of clamped sandwich beams subject to shock loading.” Eur. J. Mech. A. Solids, 22(6), 801–815.
Qiu, X., Deshpande, V., and Fleck, N. (2004). “Dynamic response of a clamped circular sandwich plate subject to shock loading.” J. Appl. Mech., 71(5), 637–682.
Qiu, X., Deshpande, V., and Fleck, N. (2005). “Impulsive loading of clamped monolithic and sandwich beam over a central patch.” J. Mech. Phys. Solids, 53(5), 1015–1061.
Radford, D., Fleck, N., and Deshpande, V. (2006). “The response of clamped sandwich beams subject to shock loading.” Int. J. Impact Eng., 32(6), 968–1055.
Roach, A., Jones, N., and Evans, K. (1998). “The penetration energy of sandwich panel elements under static and dynamic loading. Part II.” Compos. Struct., 42(2), 135–187.
Shen, J., Lu, G., Wang, Z., and Zhao, L. (2010). “Experiments on curved sandwich panels under blast loading.” Int. J. Impact Eng., 37(9), 960–970.
Tan, P. J., Reid, S. R., Harrigan, J. J., Zou, Z., and Li, S. (2005). “Dynamic compressive strength properties of aluminium foams. Part I: Experimental data and observations.” J. Mech. Phys. Solids, 53(10), 2174–2205.
Tham, C. Y. (2009). “Numerical simulation on the interaction of blast waves with a series of aluminium cylinders at near-field.” Int. J. Impact Eng., 36(1), 122–131.
Vonach, W. K., Rammerstorfer, F. G., and Bathe, K. J. (2003). “Face layer wrinkling in sandwich shells of general configuration.” Computational fluid and solid mechanics, Elsevier Science, Oxford, UK, 727–731.
Vu-Quoc, L., Deng, H., and Tan, X. G. (2001). “Geometrically exact sandwich shells: The dynamic case.” Comput. Methods Appl. Mech. Eng., 190(22–23), 2825–2873.
Xue, Z., and Hutchinson, J. (2003). “Preliminary assessment of sandwich plat subject to blast loading.” Int. J. Mech. Sci., 45(4), 687–705.
Zenkert, D. (1995). An introduction to sandwich construction, Emas, Warley, UK.
Zhu, F., Wang, Z., Lu, G., and Zhao, L. (2009). “Analytical investigation and optimal design of sandwich panels subjected to shock loading.” Mater. Des., 30(1), 91–100.
Zhu, F., Zhao, L., Lu, G., and Wang, Z. (2008). “Deformation and failure of blast-loaded metallic sandwich panels—Experimental investigations.” Int. J. Impact Eng., 35(8), 937–951.
Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 25 • Issue 5 • October 2011
Pages: 382 - 393
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Sep 12, 2010
Accepted: Mar 11, 2011
Published online: Mar 14, 2011
Published in print: Oct 1, 2011
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.