The solution for the stress state present in the vicinity of transverse matrix cracks within a composite laminate is typically obtained by assuming a regular crack spacing geometry for the problem and applying a shear-lag analysis. In order to explore the validity of this underlying assumption, the probability density function for the location of the next transverse matrix crack within a crack bounded region is examined. The regular crack spacing assumption is shown to be reasonable from an engineering point of view. Continuing with this assumption, a generalized shear-lag model for multilayer, off-axis laminates subjected to full in-plane loads is developed. This model is used to quantitatively evaluate the effective elastic properties of the damaged material. The results are applicable to materials such as ceramic matrix or polymer matrix unidirectional fiber systems where damage in the form of transverse matrix cracks arises.
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January 1998
Research Papers
Modeling the Effective Elastic Behavior of a Transversely Cracked Laminated Composite
D. J. Thomas,
D. J. Thomas
Department of Civil Engineering, Cleveland State University, Cleveland, OH 44115
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R. C. Wetherhold
R. C. Wetherhold
Department of Mechanical and Aerospace Engineering, State University of New York, Buffalo, NY 14260-4400
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D. J. Thomas
Department of Civil Engineering, Cleveland State University, Cleveland, OH 44115
R. C. Wetherhold
Department of Mechanical and Aerospace Engineering, State University of New York, Buffalo, NY 14260-4400
J. Eng. Gas Turbines Power. Jan 1998, 120(1): 191-198 (8 pages)
Published Online: January 1, 1998
Article history
Received:
February 1, 1996
Online:
November 19, 2007
Citation
Thomas, D. J., and Wetherhold, R. C. (January 1, 1998). "Modeling the Effective Elastic Behavior of a Transversely Cracked Laminated Composite." ASME. J. Eng. Gas Turbines Power. January 1998; 120(1): 191–198. https://doi.org/10.1115/1.2818075
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