A Study on Metal Hexagonal Honeycomb Crushing Under Quasi-Static Loading

In the study of honeycomb crushing under quasistatic loading, two parameters are important, the mean crushing stress and the wavelength of the folding mode. The previous theoretical models did not consider the true cylindrical curvature effects and the flow stress in the folding mode of honeycomb material. The present paper introduces a modification on Wierzbicki-s model based on considering two above mentioned parameters in estimating the mean crushing stress and the wavelength through implementation of the energy method. Comparison of the results obtained by the new model and Wierzbicki-s model with existing experimental data shows better prediction by the model presented in this paper.





References:
[1] R.K. McFarland, Hexagonal cell structures under post-buckling axial
load. AIAA Journal 1, 1963, 1380-1385.
[2] T. Wierzbicki, Crushing analysis of metal honeycombs. International
Journal of Impact Engineering 1, 1983, 157-174.
[3] W. Chen, T. Wierzbicki, Relative merits of single-cell, multi-cell and
foam-filled thin-walled structures in energy absorption, Thin-Walled
Structures 39, 2001 , 287-306.
[4] L. J. Gibson, M. E. Ashby, G. S. Schajer, and C. I. Robertson, The
mechanics of two-dimensional cellular materials, Proceedings of the
Royal Society of London A, 1982, 382, 25-42.
[5] L.J. Gibson, M.F. Ashby, Cellular Solids: Structure and Properties,
second ed. Cambridge University Press, Cambridge, UK, 1997.
[6] E. Wu, W. Jiang. Axial crush of metallic honeycombs. Int J Impact
Eng 1997, 439-456.
[7] A. Alavinia, GH. Liaghat, A comment on the axial crush of metallic
honeycombs by Wu and Jiang, International Journal of Impact
Engineering 28, 2003, 1143-1146.
[8] S. T. Hong, J. Pan, T. Tyan, P. Prasad, Quasi-static crush behavior of
aluminum honeycomb specimens under compression dominant
combined loads, International Journal of Plasticity 22, 2006, 73-109.
[9] S. T. Hong, J. Pan, T. Tyan, P. Prasad, Quasi-static crush behavior of
aluminum honeycomb specimens under non-proportional
compression-dominant combined loads, International Journal of
Plasticity 22, 2006, 1062-1088.
[10] L. Aktay, AF. Johnson, BH. Kroplin, Numerical modeling of
honeycomb core crush behavior, Engineering Fracture Mechanics 75,
2008, 2616-2630.
[11] H. Nakamoto, T. Adachi, W. Araki, In-plane impact behavior of
honeycomb structures randomly filled with rigid inclusions,
International Journal of Impact Engineering 36, 2009, 73-80.