Abstract
The effect of the cellular core on the stress intensity factor at the tip of a crack in the adhesive layer of a five-layer sandwich composite beam is investigated. A Nomex sheet is used to model the cellular core with honeycomb, square, and triangular cells. The mechanical properties of these cells are obtained by the finite element analysis supported by theoretical two- and three-dimensional equations. Based on the deduced properties, the load-displacement curve is generated for a sandwich beam under mode I fracture. The numerical findings are validated against available experimental data. It is shown that the lowest values of the stress intensity factor are observed for a core with a honeycomb structure as compared to the other two cell shapes used in this study, which are composed of equilateral triangles or squares. An increase in the wall thickness of the cells leads to an increase in the stress intensity factor.
Similar content being viewed by others
References
A. Y. Aleksandrov, L. E. Brukker, L. M. Kurshi, and A. P. Prusakov, Calculation of Three-Layered Structures (Oborongiz, Moscow, 1960) [in Russian].
V. N. Kobelev, L. M. Kovarskii, and S. I. Timofeev Calculation of Three-Layered Structures: Reference Book (Mashinostroenie, Moscow, 1984) [in Russian].
N. V. Stepanov, D. I. Savel’ev, O. L. Petrova, and I. E. Perova, “Experimental Dependence of the Stiffness Characteristics of a Cellular Core on Its Height,” Konstr. Kompoz. Mater., No. 1, 48–53 (2009).
A. M. Pershin, “Numerical Study of Static Stability of Cellular Cores Made of Composite Materials,” Vestn. Samar. Gos. Aerokosm. Univ. 47, 118–123 (2014).
L. J. Gibson and M. F. Ashby, Cellular Solids: Structures and Properties (Cambridge Univ. Press, New York, 1997).
N. V. Osadchii and V. T. Shepel, “Estimation of Mechanical Properties of a Cellular Core by the Finite Element Method,” Vestn. Rybinsk. Gos. Aviats. Tekhnol. Akad. 1, 129–135 (2015).
R. Roy, S. J. Park, J. H. Kweon, and J. H. Choi, “Characterization of Nomex Honeycomb Core Constituent Material Mechanical Properties,” Compos. Struct. 117, 255–266 (2014).
A. N. Anoshkin, V. Y. Zuiko, A. V. Tchugaynova, and E. N. Shustova, “Experimental-Theoretical Research of Mechanical Properties of Perforated Composite Sandwich Panels,” Solid State Phenom. 243, 1–10 (2016).
N. B. Pugacheva, L. M. Zamaraev, and A. S. Igumnov, “Study the Structure and Properties of the Material of the Nodes a Honeycomb Structure after Diffusion Aluminizing,” Diagnos., Res. Mech. Mater. Struct., No. 4, 71–88 (2016).
D. A. Ramantani, M. F. S. F. Moura, R. D. S. G. Campilho, and A. T. Marques, “Fracture Characterization of Sandwich Structures Interfaces under Mode I Loading,” Compos. Sci. Technol. 70, 1386–1394 (2010).
H. Lu and T. J. Lardner, “Mechanics of Subinterface Cracks in Layered Material,” Int. J. Solids Struct. 29, 669–688 (1992).
F. C. Caner and Z. P. Bazant, “Size Effect on Strength of Laminate-Foam Sandwich Plates: Finite Element Analysis with Interface Fracture,” Composites 40, 337–348 (2009).
C. C. Foo, G. B. Chai, and L. K. Seah, “Mechanical Properties of Nomex Material and Nomex Honeycomb Structure,” Compos. Struct. 80, 588–594 (2007).
R. Roy, J. H. Kweon, and J. H. Choi, “Meso-Scale Finite Element Modeling of Nomex Honeycomb Cores,” Adv. Compos. Mater. 23, 17–29 (2014).
Author information
Authors and Affiliations
Corresponding author
Additional information
__________
Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 61, No. 1, pp. 144–151, January–February, 2020.
Original Russian Text © M. Shishesaz, M. Dehghani, M. Hasanvand.
Rights and permissions
About this article
Cite this article
Shishesaz, M., Dehghani, M. & Hasanvand, M. Investigation of Mechanical Properties and Mode I Cohesive Failure of the Adhesive Layer in Sandwich Beams with a Cellular Core. J Appl Mech Tech Phy 61, 124–130 (2020). https://doi.org/10.1134/S0021894420010137
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0021894420010137