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http://dx.doi.org/10.7234/kscm.2007.20.5.056

Stress Analysis of Composite Plate with an Elliptical Hole or a Crack Using Complex Potentials  

Kwon, Jung-Ho (울산대학교 항공우주공학과)
Hwang, Kyung-Jung (㈜대한항공 항공우주사업본부 설계개발팀)
Publication Information
Composites Research / v.20, no.5, 2007 , pp. 56-63 More about this Journal
Abstract
An approach using complex potentials is presented for analysis of composite plate with an elliptical hole or a rectilinear crack. Composite structure is susceptible to encounter impact damages, which lead to considerable decrease in its residual strength. Such impact damages could be modeled as an equivalent elliptical hole or notch-like crack. Even though finite element method is widely used to analyze stresses or fracture mechanics parameters around such damage, it is tedious to make successive FE-modeling for damage tolerance assessment under fatigue loadings. In this point of view, the solutions based on complex potentials are very simple and easy to use. The computed results are also compared and discussed with those from FEA.
Keywords
Complex Potential; Elliptical Hole; Composite Laminated Plate; Stress Concentration; Stress Intensity Factor; Finite Element Analysis;
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  • Reference
1 Aircraft Damage Tolerance Requirement., MIL-A-83444 (USAF), July 1974, pp. 2-12
2 Kinsey A., 'Post-impact Compressive Behaviour of Low Temperature Curing Woven CFRP Laminates,' Composite, Vol. 26, No. 9, 1995, pp. 661-667   DOI   ScienceOn
3 Barrois, W., 'Stress and Displacement Due to Load Transfer by Fasteners in Structural Assemblies,' Eng. Fract. Mech. Vol. 10, 1978, pp. 115-176   DOI   ScienceOn
4 Kosmodamiansky, A.S., Stress Strain State of Anisotropic Mediums with Holes or Cavity's, Vischa schkola, Kiev, 1976, pp. 4-6
5 Muskhelishvili, N.l., Some Basic Problems of the Mathematical Theory of Elasticity, Noordhoff Ltd, Groningen, 1963, pp. 171-190, pp. 389-392
6 Lekhnitskii S.G., Anisotropic Plates, Gordon and Breach, 1968, pp. 157-171
7 Lekhnitskii S.G., Anisotropic Plates, Gordon and Breach, 1968, pp. 130-131
8 Savin, G.N., Stress Concentrations Around Holes, Pergamon Press, N.Y., 1961, pp. 152-174
9 Kassapoglou C., 'Compression Strength of Composite Sandwich Structures after Barely Visible Impact Damage,' J. Compos. Tech. and Res., JCTRER, Vol. 18, No. 4, 1996, pp. 274-284   DOI   ScienceOn
10 Lekhnitskii, S.G., Anisotropic Plates, Gordon and Breach Press, 1968, pp. 28-31
11 Broek, D., Elementary Engineering Fracture Mechanics, 4th Ed., Martinus Nijhoff pub., 1986, pp. 73-81
12 Poe, C. C., Jr., 'Stress Intensity Factor for a Cracked Sheet with Riveted and Uniformly Spaced Stringers,' NASA TR R-358. 1971
13 Aircraft Structural Integrity Program, Airplane Requirement., MIL-STD-1530A, Dec. 1975, pp. 4-8