Abstract
Multiple delamination causes severe degradation of the stiffness and strength of composites. Interactions between multiple delamination, and buckling and postbuckling under compressive loads add the complexity of mechanical properties of composites. In this paper, the buckling, postbuckling and through-the-width multiple delamination of symmetric and unsymmetric composite laminates are studied using 3D FEA, and the virtual crack closure technique with two delamination failure criteria: B-K law and power law is used to predict the delamination growth and to calculate the mixed-mode energy release rate. The compressive load-strain curves, load-central deflection curves and multiple delamination process for eight composite specimens with different initial delamination sizes and their distributions as well as two angle-ply configurations 04//(±θ)6//04 (θ = 0° and 45°, and “//” denotes the delaminated interface) are comparatively studied. From numerical results, the unsymmetry decreases the local buckling load and initial delamination load, but does not affect the global buckling load compared with the symmetric laminates. Besides, the unsymmetry affects the unstable delamination and buckling behaviors of composite laminates largely when the initial multiple delamination sizes are relatively small.
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Liu, P.F., Zheng, J.Y.: Progressive failure analysis of carbon fiber/epoxy composite laminates using continuum damage mechanics. Mater. Sci. Eng., A 485(1–2), 711–717 (2008)
Fu, H.M., Zhang, Y.B.: On the distribution of delamination in composite structures and compressive strength prediction for laminates with embedded delaminations. Appl. Compos. Mater. 18(3), 253–269 (2011)
Kim, H.J., Hong, C.S.: Buckling and postbuckling behavior of composite laminates with a delamination. Compos. Sci. Technol. 57(5), 557–564 (1997)
Chai, H., Babcock, C., Knauss, W.: One dimensional modelling of failure in laminated plates by delamination buckling. Int. J. Solids Struct. 17(11), 1069–1083 (1981)
Chai, H., Babcock, C.: Two-dimensional modelling of compressive failure in delaminated laminates. J. Compos. Mater. 19(1), 67–98 (1985)
Kardomateas, G.A., Schmueser, D.W.: Buckling and postbuckling of delaminated composites under compressive loads including transverse shear effects. AIAA J. 26(3), 337–343 (1988)
Kutlu, Z., Chang, F.K.: Modeling compression failure of laminated composites containing multiple through-the-width delamination. J. Compos. Mater. 26(3), 350–386 (1992)
Whitcomb, J.D.: Analysis of a laminate with a postbuckled embedded delamination, including contact effects. J. Compos. Mater. 26(10), 1523–1535 (1992)
Bolotin, V.V.: Delamination in composite structures: its origin, buckling, growth and stability. Compos. Part B-Eng 27(2), 129–145 (1996)
Singh, S.B., Kumar, A.: Postbuckling response and failure of symmetric laminates under in-plane shear. Compos. Sci. Technol. 58(12), 1949–1960 (1988)
Liu, P.F., Hou, S.J., Chu, J.K., Hu, X.Y., Zhou, C.L., Liu, Y.L., Zheng, J.Y., Zhao, A., Yan, L.: Finite element analysis of postbuckling and delamination of composite laminates using virtual crack closure technique. Compos. Struct. 93(6), 1549–1560 (2011)
Han, S.C., Lee, S.Y., Rus, G.: Postbuckling analysis of laminated composite plates subjected to the combination of in-plane shear, compression and lateral loading. Int. J. Solids Struct. 43(18–19), 5713–5735 (2006)
Rybicki, E.F., Kanninen, M.F.: A finite element calculation of stress intensity factors by a modified crack closure integral. Eng. Fract. Mech. 9(4), 931–938 (1977)
Krueger, R.: Virtual crack closure technique: history, approach, and applications. Appl. Mech. Rev. 57(2), 109–143 (2004)
Benzeggagh, M.L., Kenane, M.: Measurement of mixed-mode delamination fracture toughness of unidirectional glass/epoxy composites with mixed-mode bending apparatus. Compos. Sci. Technol. 56(4), 439–449 (1996)
Kutlu, Z., Chang, F.K.: Composite panels containing multiple through-the-width delamination and subjected to compression part II: experiments and verification. Compos. Struct. 31(4), 297–314 (1995)
Turon, A., Camanho, P.P., Costaa, J., Dávila, C.G.: A damage model for the simulation of delamination in advanced composites under variable-mode loading. Mech. Mater. 38(11), 1072–1089 (2006)
Wang, S., Zhang, Y.: Buckling, post-buckling and delamination propagation in debonded composite laminates part:2: numerical applications. Compos. Struct. 88(1), 131–146 (2009)
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This research is supported by Natural Science funding of Zhejiang Province (Number: LY13E050002) and Fundamental Research Funds for the Central Universities of China.
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Liu, P.F., Zheng, J.Y. On the Through-the-Width Multiple Delamination, and Buckling and Postbuckling Behaviors of Symmetric and Unsymmetric Composite Laminates. Appl Compos Mater 20, 1147–1160 (2013). https://doi.org/10.1007/s10443-013-9321-z
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DOI: https://doi.org/10.1007/s10443-013-9321-z