Study on Transverse Shear Behavior of CFRP Sandwich Structure with M-Pattern Folded Core

Abstract:

In order to solve the problem of the face/core bonding performance of the sandwich structure, this paper proposed a M - pattern folded sandwich structure. Structural performance in direct (pure) shear was investigated for sandwich structure. FE-Analytical of sandwich structure strength under shear loading condition was presented for possible failure modes. Panels with core of different thickness were tested for different failure modes and the mechanical properties. In general, the measured failure loads showed good agreement with the FE-analytical predictions.The results shown that failure modes of the sandwich structure with low relative density were shear buckling and fracture of thin-walled of cores, respectively. For the sandwich structure with high relative density, the dominant failure mode was interfacial debonding of face/cores, and the initiating failure along the ends of the specimens.

• Periodical: Applied Mechanics and Materials (Volumes 670-671)
• Pages: 173-176
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.670-671.173
• Online since: October 2014
• Authors: Li Xin Cong, Yu Guo Sun
• Keywords: Failure Modes, Finite Element Analysis (FEA), In-Plane Shear Load, M - Pattern Folded Core, Sandwich Panels

References

[1] S. Fischer, K. Drechsler and S. Kilchert. Compos. Part A-appl S. Vol. 40 (2009), p. (1941).

[2] A. Lebée, and K. Sab. Int. J. Solids Struct. Vol. 47 (2010), p.2620.

[3] E. Baranger, P.A. Guidault and C. Cluzel. Compos. Struct. Vol. 93 (2011), p.2504.

[4] L. P. Shabalin, A. V. Gorelov and I. N. Sidorov. Mech. Compos. Mater. Vol. 48 (2012), P. 415.

[5] S. Heimbs, J. Cichosz and M. Klaus. Compos Struct. Vol. 92 (2010), p.1485.

[6] S. Kilchert, A. F. Johnson and H. Voggenreiter. Compos. Part A-appl. S. Vol. 57 (2014), p.16.

[7] ASTM: C273 West Conshohocken (PA): ASTM International; (2006).