failure prediction for composites materials by the HFGMC micromechanical method
- Paper number
IAC-15,C2,8,5,x29365
- Author
Mr. Aviad Levi-Sasson, Tel Aviv University, Israel
- Coauthor
Prof. Jacob Aboudi, Tel Aviv University, Israel
- Coauthor
Prof. Anton Matzenmiller, University of Kassel, Germany
- Coauthor
Prof. Rami Haj-Ali, Tel Aviv University, Israel
- Year
2015
- Abstract
The use of laminated composite materials have increased over the last four decades spanning both aviation and space industries. Failure theories for an orthotropic layer within the laminated composite under multi-axial stress states have been extensively investigated and many macro-failure theories have been proposed. These failure criteria share the use of stress or strain invariants for the homogenized medium in order to generate failure envelopes, e.g Hashin[4], Tsai and Wu[7], Puck[6], Christensen [2], among several others. In fact, it has been previously argued, e.g. Hashin[4], that the complexity of damage at the microstructural scale offers little or no hope for using micro-mechanical methods for failure prediction of composite. However, the recent advances in computational and nonlinear micromechanical methods allow the use of failure predictions based on micromechanical theories using of the average stress and strain in the phases, e.g the SIFT[3] criteria. This study utilizes the high fidelity generalized method of cells (HFGMC) micromechanical method, Aboudi[1], and its nonlinear and parametric extensions, Haj-Ali and Aboudi [5], in order to predict ultimate failures of fiber composite media. To that end, continuum damage models are implemented for the fiber and matrix subcells in order to generate the effective softening cause by damag. The formulation and the computational implementations will be discussed. The generated HFGMC failure envelops are compared with some well-known failure criteria. References: [1] Aboudi, J., Arnold, S.M., Bednarcyk, B.A., 2013. Micromechanics of Composite Materials: A Generalized Multiscale Analysis. Elsevier, Oxford, UK. [2] Christensen, R.M. (2007), “A Comprehensive Theory of Yielding and Failure for Isotropic Materials,” Journal of Engineering Materials and Technology, 129(2): 173–181. [3] Gosse, J.H. and Christensen, S. (2001). Strain invariant failure criteria for polymers in composite materials. AIAA-2001-1184 [4] Hashin Z, (1980), “Failure criteria for unidirectional fibre composites,” ASME Journal of Applied Mechanics, Vol. 47 (2), 1980, pp 329-334. [5] Haj-Ali, R., and Aboudi, J.,” A New and General Formulation of the Parametric HFGMC Micromechanical Method for Two and Three-Dimensional Multi-Phase Composites” Int. J. Solids and Structures, Vol. 50 (6), pp. 907–919, 2013. [6] Puck, A. and Schurmann, H. (2002). Failure Analysis of FRP Laminates by Means of Physically Based Phenomenological Models, Composites Science and Technology, 62: 1633–1662. [7] Tsai, S.W. and Wu, E.M. (1971), “A General Theory of Strength for Anisotropic Materials,” Journal of Composite Materials, 5(1): 58–80.
- Abstract document
- Manuscript document
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