Abstract
In this paper, delamination of Mode II in a stratified glass fiber-epoxy resin under static loading is investigated. From the results obtained by the finite element method, using the criteria of Irwin-Kies and other theories of elasticity, the strain energy release rate is evaluated. The obtained numerical results are compared with known experimental and theoretical results. Considering local effects, such as fiber bridging in the finite element program, the scatter between experimental and numerical results is evaluated. The specimen is an ENF (End-Notched Flexure) beam and finite element analysis is carried out using the ANSYS software. Paper presented at the 34-th Solids Mechanics Conference, September 2-7, 2002, Zakopane.References
1. M.W. MONEY, Measurement of mode I and mode II strain energy release rates, National Physical Laboratory, NPL Report DMA(A) 178, March 1989.
2. B.D. DAVIDSON, R. KRUGER, M. KONIG, 3-Dimensional analysis and resulting design recommendation for unidirectional and multidirectional end-notched-flexure tests, Journal of Composite Material, 29, 2108–2133, 1995.
3. B.D. DAVIDSON, C.S. ALTONEN, J.J. POLAHA, Effect of stacking sequence delamination toughness and delamination growth behavior in composite end-notched-flexure specimens, Composite Materials: Testing and Design (Vol. 12), ASTM STP 1274, C. R. SAFF and R. B. DEO [Eds.], ASTM, 393–413, 1996.
4. TSAI STEPHEN, W. HAHN, H. THOMAS, Introduction to composite materials, Sec. 7.2, Technomic Publishing Company, 1980.
5. B.D. DAVIDSON, R. KRUGER, M. KONIG, Effect of stacking of sequence on energy release rate distribution in multilayer DCB and ENF specimens, Submitted to Engineering Fracture Mechanics, Syracuse University Department of Mechanical, Aerospace and Manufacturing Engineering Technical Report Number 95–101, 1995.
6. L. DARIDON, B. COCHELIN, M. POTIER FERRY, Delamination and fiber bridging modelling in composite samples, University de Metz-He du Sauley 57045 Metz-Cedex 01, France, 1995.
7. W.R. BROUGHTON, D. HULL, Measurement of mode II strain energy release rates using the ENF test. A VA MA S group project on delamination tests of composite materials, Department of Material Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2, 3QZ, 1987/1988.
8. T.J. REINHART, Engineering materials handbook, ASM International, 1, 788, 1987. Received November
2. B.D. DAVIDSON, R. KRUGER, M. KONIG, 3-Dimensional analysis and resulting design recommendation for unidirectional and multidirectional end-notched-flexure tests, Journal of Composite Material, 29, 2108–2133, 1995.
3. B.D. DAVIDSON, C.S. ALTONEN, J.J. POLAHA, Effect of stacking sequence delamination toughness and delamination growth behavior in composite end-notched-flexure specimens, Composite Materials: Testing and Design (Vol. 12), ASTM STP 1274, C. R. SAFF and R. B. DEO [Eds.], ASTM, 393–413, 1996.
4. TSAI STEPHEN, W. HAHN, H. THOMAS, Introduction to composite materials, Sec. 7.2, Technomic Publishing Company, 1980.
5. B.D. DAVIDSON, R. KRUGER, M. KONIG, Effect of stacking of sequence on energy release rate distribution in multilayer DCB and ENF specimens, Submitted to Engineering Fracture Mechanics, Syracuse University Department of Mechanical, Aerospace and Manufacturing Engineering Technical Report Number 95–101, 1995.
6. L. DARIDON, B. COCHELIN, M. POTIER FERRY, Delamination and fiber bridging modelling in composite samples, University de Metz-He du Sauley 57045 Metz-Cedex 01, France, 1995.
7. W.R. BROUGHTON, D. HULL, Measurement of mode II strain energy release rates using the ENF test. A VA MA S group project on delamination tests of composite materials, Department of Material Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2, 3QZ, 1987/1988.
8. T.J. REINHART, Engineering materials handbook, ASM International, 1, 788, 1987. Received November
