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Abstract

Numerical simulations of damage progression in laminated composites with a hole are presented. The finite element procedure which incorporates two-phase continuum damage constitutive relations is utilized for the numerical predictions. The pre dictions from the numerical simulations are compared with the experimental results. The similarities and contradictions between predictions and experimental observations are dis cussed. Overall, the predictions are qualitatively close to experimental observations. The qualitative difference between predictions and experimental observations is obvious in laminates where delamination and edge stresses play a significant role in damage evolution up to ultimate failure. The discrepancy in results in these cases is due to limitation of the failure modes incorporated in the model and the damage induced by the out-of-plane stresses.

References

Tsai, S.W. 1968 "Strength Theories of Filamentory Structures," Fundamental Aspects of Fiber Reinforced Plastic Composites R T Schwartz, ed , New York Wiley, pp 3-11

Schapery, R.A. 1981. "On Viscoelastic Deformation and Failure Behavior of Composite Materials with Distributed Flaws," Advances in Aerospace Structures and Materials , ASMEAD-015-20

Frantziskonis, G. 1988

"Distributed Damage in Composites, Theory and Verification,"

Comp. Struct Intl. Journal , 10:165-184.

Frantziskonis, G. and S.P. Joshi. 1989

"Damage Evolution and Constitutive Behavior of Advanced Composites,"

Proceedings of the American Society for Composites, Fourth Technical Conference , pp 85-96.

Frantziskonis, G. and S.P. Joshi 1990

"Damage Evolution and Constitutive Behavior of Advanced Composites;'

Composite Structures Intl. Journal, 16 341-357

Joshi, S.P. and R.J. Goode. 1990 "Laminated Plate Finite Element with Damage Evolution Constitutive Laws," Proceedings of the American Society of Composites, Fifth Technical Conference, Technomic Publishing Co , Inc., pp. 296-308

Joshi, S.P. 1991. "Two Phase Continuum Damage Mechanics: Application to Brittle Matrix Composites," Brittle Matrix Composite 3, A. M. Brandt and I. H. Marshall, eds , London and New York: Elserier Applied Science, pp. 128-137.

Irvine, T.B. and C.A. Ginty. 1986. "Progressive Fracture of Fiber Composites," J Composite Materials , 20:166-184.

Chang, F.K. and K.Y. Chang. 1987. "A Progressive Damage Model for Laminated Composites Containing Stress Concentrations," J. Composite Materials, 21.834-855

10.

Chang, K.Y. , S. Liu and F.K. Chang. 1991

"Damage Tolerance of Laminated Composites Containing an Open Hole and Subjected to Tensile Loadings,"

J Composite Materials, 25.274-301

11.

Chen, W.S. 1989. "Damage Characteristics of Laminates With a Hole," Proceedings of the American Society for Composites, Fourth Technical Conference , pp 935-943.

Damage Progression in the Vicinity of a Hole

Abstract

References