Analysis of In-Plane Equivalent Elastic Modulus of Aluminum Honeycomb Cores Based on Finite Element Method

Abstract:

In order to overcome the low precision of analytic formulas for equivalent elastic modulus of honeycomb, the in-plane deformations of honeycomb are simulated numerically through finite element analysis (FEA) software Ansys. The representative volume element (RVE) is firstly selected and modeled in 3D, according to the repetition of honeycomb cell. Then the deformations of RVE under three different boundary conditions are discussed on several premises. And the equivalent elastic modulus of two specifications of honeycomb from experiments, analytic formulas of Gibson and FEAs simulation results are presented and compared, adequately proving the effectiveness of the above method. Finally, the fitting formulas of equivalent elastic modulus that are convenient for engineering application are proposed by analyzing series of different sizes honeycomb.

• Periodical: Applied Mechanics and Materials (Volumes 477-478)
• Pages: 1159-1168
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.477-478.1159
• Online since: December 2013
• Authors: Ming Chen, Xu Can Xu*, Jin Fei Liu
• Keywords: Equivalent Elastic Parameters, Finite Element Analysis (FEA), Honeycomb Core, In-Plane Stiffness

References

[1] Zhang Tieliang, Ding Yunliang, Jin Haibo. Comparative analysis of equivalent models for honeycomb sandwich plates, J. Chinese Journal of Applied Mechanics, 28-3 (2011), 275-282.

[2] Gibson L J, Ashby M F, Schajer G S, et al. The mechanics of two-dimensional cellular materials, J. Proceedings of The Royal Society of Lond: Series A - Mathematical, Physical & Engineering Sciences, 382(1982) 25-42.

[3] Gibson L J, Ashby M F. Cellular solids structure and properties[D]. England: Cambridge University Press, (1999).

[4] Wang Hu, Fu Minghui. A model of honeycomb sandwich shell with consideration of core in-plane stiffness, J. ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS SUNYATSENI, 37-4 (1998) 46-49.

[5] Papka S D, Kyriakides S. Experiments and full-scale numerical simulations of in-plane crushing of a honeycomb, J. Acta mater, 46-8 1998 2765-2776.

DOI: 10.1016/s1359-6454(97)00453-9

[6] Zhao Jinsen. Research on equivalent models of the mechanical function for aluminium honeycomb sandwich panel [D]. Nanjing: Nanjing University of Aeronautics and Astronautics, (2006).

[7] Wang Yinjian. Deformation Models of Honeycomb Cell under In-plane Shear, J. Acta Scientiarum Naturelium Universitatis Pekinensis, , 27-3 (1991) 301-307.

[8] Becker W. The in-plane stiffnesses of a honeycomb core including the thickness effect, J. Archive of Applied Mechanics, 68-5 (1998) 334-341.

DOI: 10.1007/s004190050169

[9] Jiao Guiqiong. Mechanics of Composite Materials[M]. Xi'an: Northwestern Polytechnical University Press, (2008).

[10] Liang Sen, Chen Hualing, Chen Tianning, et al. Analytical study of the equivalent elastic parameters for a honeycomb core, J. Journal Of Aeronaut Ical Materials, 24-3 (2004) 26-31.

[11] Wang Yinjian. Deformation Models of Honeycomb Cell under In-plane Shear, J. Acta Scientiarum Naturelium Universitatis Pekinensis, , 27-3 (1991) 301-307.