A COMPARATIVE ANALYSIS OF ORTHOTROPIC ELASTIC CONSTANT OF NOMEX HONEY COMB CORE
Abstract
In this research work, the modulus of elasticity was determined by analytical and numerical means and correlated with experimental results for Nomex paper hexagonal honeycombs. The analytical methods included continuum formulations and models based on strength of materials including a variety of beam theories. The numerical method is used for determination of orthotropic mechanical properties of honeycomb core using Isotropic material properties of Nomex paper by FEA simulations using ANSYS as a tool, and the experimental testing consisted of mechanical characterization of the honeycombs under both in-plane and out-of-plane loading by using tensile testing. The results obtained are very useful and have close agreement.References
A.H. Nayfeh, Wave Propagation in Layered
Anisotropic Media with Application to
Composites. Elsevier Publishing Company,
Applied Mathematics and Mechanics Series,
Amsterdam (1995).
S. Balawi and A.H. Nayfeh, Effective
Mechanical Properties of Triangular and
Hexagonal Cellular Composites. 11th
International Conference on Composites /
Nano Engineering, Hilton-Head Island, South
Carolina (2004).
M. Meo, A.J. Morris, R. Vignjevic and
G. Marengo, Composite Structure 62 (2003)
A. Levent, A. Johnson and F. H. Martin,
Comput. Material Science 32 (2005) 252.
C.C. Foo, G.B. Chai and L.K. Seah,
Composite Structures 80 (2007) 588.
W.S. Burton and A.K. Noor, Comput. Meth.
Appl. Mech. Eng. 145 (1997) 341.
F. Meraghni, F. Desrumaux and M.L.
Benzeggagh, Composites Part A 30 (1999)
H. Jorg and B. Wilfried, Comput. Mater. Sci.
(2000) 108.
L.J. Gibson and M.F. Ashby, Cellular Solids:
Structures & Properties, Pergamon Press
(1988).
M.H. Triplett and W.P. Schonberg, Struct.
Eng. Mech. 6 (1998) 95.
C.W. Schwingshackl, G.S. Aglietti and P.R.
Cunningham, Journal of Aerospace
Engineering ASCE (2006) 177.
F. Mujika, J. Pujana and M. Olave, Polymer
Testing 30 (2011) 222.
G.C. Shah, A.L. Kalamkrov and A.V.
Georgiades, Composites: Part A 38 (2007)
S. Balawi and J.L. Abot, Composite
Structures 84 (2008) 293.
A. Karakoc and J. Freund, Composite
Structures (2012)
ASTM. General Products, Chemical
Specialities and End use Products (1998).