Abstract
A model for prediction of effective stiffnesses, thermal expansion coefficients as well as average ply stresses in micro cracked laminates is presented. The theory for determination of ply stresses is a new development of a procedure for prediction of stiffness and thermal expansion coefficients previously developed by the authors. The model is based on asymptotic solutions for two extreme cases, dilute and infinite micro crack densities respectively. In the present paper, explicit expressions are given for the coefficients appearing in the theory. Theoretical predictions of stiffnesses, thermal expansion coefficients and average ply stresses of micro cracked cross ply and angle ply laminates are compared to FE- calculations. It is found out that the present theory is both quick and easy to use and also gives reliable estimations of mechanical properties in micro cracked laminates.
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© 1992 Springer-Verlag, Berlin Heidelberg
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Gudmundson, P., Östlund, S., Zang, W. (1992). Local Stresses and Thermoelastic Properties of Composite Laminates Containing Micro Cracks. In: Reddy, J.N., Reifsnider, K.L. (eds) Local Mechanics Concepts for Composite Material Systems. IUTAM Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84792-9_15
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DOI: https://doi.org/10.1007/978-3-642-84792-9_15
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