Verification of a micro-mechanical approach for the investigation of progressive damage in composite laminates
- 24 Downloads
In this paper, micro-damage mechanics (MIDM) and macro-damage mechanics (MADM) are employed to study the progressive damage in composite laminates. Firstly, a novel method for progressive damage modeling of composite laminates is proposed based on MADM rules. In the MADM method, a new exponential behavior for the softening regime of damaged plies is proposed from comprehensive experimental tests on glass/epoxy composite laminates with a variety of the stacking sequence. Then, a MIDM model is employed to study the mechanical behavior of composite laminates with micro-cracks. The effective elastic moduli and Poisson’s ratio in damaged composite laminates containing a large number of micro-cracks are determined by utilizing variational methods. Finally, the proposed exponential behavior of damaged plies based on MADM rules is verified by utilizing a MIDM model. The resulting coincidence of MADM and MIDM proves that the proposed method can accurately simulate the behavior of damaged plies in glass/epoxy composite laminates.
Unable to display preview. Download preview PDF.
The authors would like to acknowledge the financial support of University of Tehran for this research under Grant number 28686/01/01.
- 1.Lu, H., Guo, L., Liu, G., et al.: Progressive damage investigation of 2.5 D woven composites under quasi-static tension. Acta Mech. (2018). https://doi.org/10.1007/s00707-017-2024-z
- 14.Kachanov, L.: On the time to failure under creep conditions, Izv. AN SSSR Otd. Tekhn. Nauk 8, 8 (1958)Google Scholar
- 37.Jones, R.M.: Mechanics of Composite Materials. CRC Press, Boca Raton (1998)Google Scholar
- 39.Christensen, R.M.: Mechanics of Composite Materials. Courier Corporation, New York (2012)Google Scholar