Journal of Mechanical Science and Technology

, Volume 19, Issue 4, pp 947–957 | Cite as

Modelling of low velocity impact damage in Laminated Composites

  • Jounghwan Lee
  • Changduk Kong
  • Costas Soutis


In this study a simple model is developed that predicts impact damage in a composite laminate avoiding the need of the time-consuming dynamic finite element method (FEM). The analytical model uses a non-linear approximation method (Rayleigh-Ritz) and the large deflection plate theory to predict the number of failed plies and damage area in a quasi-isotropic composite circular plate (axisymmetric problem) due to a point impact load at its centre. It is assumed that the deformation due to a static transverse load is similar to that oc curred in a low velocity impact. It is found that the model, despite its simplicity, is in good agreement with FEM predictions and experimental data for the deflection of the composite plate and gives a good estimate of the number of failed plies due to fibre breakage. The predicted damage zone could be used with a fracture mechanics model developed by the second investigator and co-workers to calculate the compression after impact strength of such laminates. This approach could save significant running time when compared to FEM solutions.

Key Words

Low Velocity Impact Model Non-linear Approximation Method Composite Laminate Compression After Impact Strength 


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  1. Chang, F. K. and Chang, K. Y., 1987, “A Progressive Damage Model for Laminated Composites Containing Stress Concentrations,”Journal of Composite Materials, Vol.21, pp.834–854.CrossRefGoogle Scholar
  2. Davies, G. A. O. and Zhang, X., 1995, “Impact Damage Prediction in Carbon Composite Structures,”International Journal of Impact Engineering, Vol. 16, No. 1, pp. 149–170.CrossRefGoogle Scholar
  3. Fuoss, E., Straznicky, P. V. and Poon, C, 1994, “Prediction of Impact □ Induced Delamination in Composite Plates,”Advanced Composite Letters, Vol. 3, No. 3, pp. 193–196.Google Scholar
  4. Fuoss, E., Straznicky, P. V. and Poon, C, 1998, “Effects of Stacking Sequence on The Impact Resistance in composite Laminates. Part 2: Prediction Method,”Composite Structures, Vol.41, No. 2, pp. 177–186.CrossRefGoogle Scholar
  5. Greszczuck, L. B., 1982, “Damage in Composite Panels due to Low Velocity Impact,” Impact Dynamics, Ed. Zukas Z.A. J. Wiley.Google Scholar
  6. Hitchings, D., 1995, “FE77 User Manual Version 2.49,” Imperial College, Aeronautics.Google Scholar
  7. Khoo, S. W., 1991, “Low Velocity Impact of Composite Structures,” Phd Thesis, University of London, December.Google Scholar
  8. Kim, Y., Hwang, J., Baek, K., Cha, C. and Yang, I., 2003, “Impact Collapse Characteristics of CF/Epoxy Composite Tubes for Light-Weights,”KSME International Journal, Vol. 17, No. 1, pp. 48–56.Google Scholar
  9. Lee, J., 2003, “Compressive Behaviour of Composite Laminates before and after Low Velocity Impact,” PhD Thesis, Imperial College London, UK.Google Scholar
  10. Lee, S. R. and Sun, C. T., 1995, “On The Apparent Bending Isotropy in Clamped Elliptic Composite Laminates,”Journal of Composite Materials, Vol. 29, No. 12, pp. 1601–1620.Google Scholar
  11. Liou, W. J., Tseng, C. I. and Chao, L. P., 1996, “Stress Analysis of Laminated E-glass Epoxy composite Plates Subject to Impact Dynamic Loading,”Computers & Structures, Vol. 61, No. 1, pp. 1–11.MATHCrossRefGoogle Scholar
  12. Liu, D., 1988, “Impact-induced Delamination □ A View of Bending Stiffness Mismatching,”Journal of Composite Materials, Vol. 22, pp. 674–692.CrossRefGoogle Scholar
  13. Monagan, M. B., 2000, “Maple 6: Programming Guide,” Waterloo, Ont., Waterloo Maple.Google Scholar
  14. Murri, G. B. and Guynn, E. G., 1988, “Analysis of Delamination Growth from Matrix Cracks in Laminates Subjected to Bending Loads,”Composite materials: Testing and Design (Eighth Conference), ASTM STP 972, pp. 322–339.Google Scholar
  15. Sjobolm, P. O., Hartness, J. T. and Cordell, T. M., 1988, “On Low Velocity Impact Testing of Composite Materials,”Journal of Composite Materials, Vol. 22, pp. 30–52.CrossRefGoogle Scholar
  16. Soutis, C. and Fleck, N. A., 1990, “Static Compression Failure of Carbon Fibre T800/ 924C Composite Plate with a Single Hole,”Journal of Composite Materials, Vol. 24, pp. 536–558.CrossRefGoogle Scholar
  17. Soutis, C. and Curtis, P. T., 1995, “Prediction of The Post-Impact Compressive Strength of CFRP Laminated Composites,” DRA/SMC Tech. Report. 951012. Nov..Google Scholar
  18. Suemasu, H. and Majima, O., 1996, “Multiple Delaminations and Their Severity in Circular Axisymmetric Plates Subjected to Transverse Loading,”Journal of Composite Materials, Vol. 30, No. 4, pp. 441–453.Google Scholar
  19. Suemasu, H. and Majima, O., 1998, “Multiple Delaminations and Their Severity in Nonlinear Circular Plates Subjected to Concentrated Loading,”Journal of Composite Materials, Vol. 32, No. 2, pp. 123–140.Google Scholar
  20. Timoshenko and Woinowsky-Krieger, 1959, “Theory of Plates and Shells,” McGraw-Hill Book Company, 2nd Ed..Google Scholar
  21. Watson, S. A., 1994, “The Modelling of Impact Damage in Kevlar-Reinforced Epoxy Composite Structures,” PhD Thesis, University of London, November.Google Scholar
  22. Whitehead, R. S., 1985, “ICAF National Review,” Pisa., pp. 10–26.Google Scholar

Copyright information

© The Korean Society of Mechanical Engineers (KSME) 2005

Authors and Affiliations

  1. 1.Aerospace EngineeringThe University of SheffieldUK
  2. 2.Department of Aerospace EngineeringChosun UniversityGwangjuKorea

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