Aniello Riccio, Angela Russo, Antonio Raimondo, Andrea Sellitto


In this work, the delamination onset and propagation in composite panels with induced defects is numerically investigated by means of a robust numerical procedure, called SMXB-FB and implemented in ANSYS® FEM code by Ansys Parametric Design Language. The used methodology is based on the Virtual Crack Closure Technique (VCCT) and is able to avoid the time-step and mesh dependency issues of the standard VCCT based delamination growth approaches. In addition the proposed model takes into account the Fibre Bridging phenomenon by considering the real variation of the Critical Energy Release Rate associated to the Mode I failure mechanisms (peeling). A sensitivity analysis has been performed to assess the influence of the geometrical parameters on the delamination growth and the carrying load capability of a composite plate with a through-width delamination under compression in the presence of the fiber bridging phenomenon. Three different material models have been adopted: high sensitive, sensitive, and insensitive to the fiber bridging phenomenon to better point out how the fiber bridging phenomenon can delay the delamination growth and influence the compressive behaviour of the composite plate


FEM, Composites, fibre bridging

Full Text:



Kharghani N, Guedes Soares C. Behavior of composite laminates with embedded delaminations. Compos Struct, 150, pp. 226–39 (2016).

Yamanaka T, Heidari-Rarani M, Lessard L, Feret V, Hubert P. A new finite element method for modeling delamination propagation without additional degrees of freedom. Compos Struct,147, pp. 82–98 (2016).

Craig A. Steeves, Norman A. Fleck. In-plane properties of composite laminates with through-thickness pin reinforcement. International Journal of Solids and Structures, 43(10), pp. 3197-3212 (2006).

M. Ravandi, W.S. Teo, L.Q.N. Tran, M.S. Yong, T.E. Tay. The effects of through-the-thickness stitching on the Mode I interlaminar fracture toughness of flax/epoxy composite laminates. Materials & Design, 109, pp. 659-669 (2016).

L. Francesconi, F. Aymerich. Numerical simulation of the effect of stitching on the delamination resistance of laminated composites subject to low-velocity impact. Composite structures, 159, pp. 110-120 (2017).

D. C. Jegley. Improving strength of post buckled panels through stitching. Composite structures, 80(2) pp. 298-306 (2007).

K. T. Tan, N. Watanabe, Y. Iwahori. Experimental investigation of bridging law for single stitch fibre using Interlaminar tension test. Composite structures, 92(6), pp. 1399-1409 (2010)

A.P.S. Selvadurai. On the Mode I stress intensity factor for an external circular crack with fibre bridging. Composite structures, 92(6), pp. 1512-1516 (2010).

G. Bao, Z. Suo. Remarks on Crack-Bridging Concepts. Applied Mechanics Reviews, 45(8), pp. 355-366 (1992).

V. Tamuzs, S. Tarasovs, U. Vilks. Progressive delamination and fiber bridging modeling in double cantilever beam composite specimens. Engineering Fracture Mechanic, 68(5), pp. 513-525 (2001).

A. Airoldi, C. G. Davila. Identification of material parameters for modelling delamination in the presence of fibre bridging. Composite Structures, 94(11), pp. 3240-3249 (2012).

A. Riccio, A. Raimondo, F. Scaramuzzino. A robust numerical approach for the simulation of skin-stringer debonding growth in stiffened composite panels under compression. Compos B Eng, 71, pp. 131–42 (2015).

E. Pietropaoli, A. Riccio. On the robustness of finite element procedures based on Virtual Crack Closure Technique and fail release approach for delamination growth phenomena. Definition and assessment of a novel methodology. Compos Sci Technol, 70, pp. 1288–300 (2010).



  • There are currently no refbacks.

Copyright © 2018. All Rights Reserved.