Postbuckling Analysis of Laminate with Delamination Based on the Improved Damage Model of 2-D
The paper presents the compatibility relation of displacement, strain energy expression, and the formulations of Finite Element Method in the transitional region for the improved damage model of 2-D delamination. The postbuckling behaviors of composite laminated plate with a circular delamination are analyzed. Results show that the model mainly improves computational results of energy release rates in the delamination front. The model should only be used in a narrow region near the crack-tip and the normal Mindlin model in other regions. It leads to little increase in the amount of computation, but significant improvement in the results.
H.S. Lee, I.S. Yoon and M.H. Aliabadi
G. Yang et al., "Postbuckling Analysis of Laminate with Delamination Based on the Improved Damage Model of 2-D ", Key Engineering Materials, Vols. 385-387, pp. 253-256, 2008