This paper presents the formulation of a tri-dimensional cohesive element implemented in a user-written material subroutine for explicit finite element analysis. The cohesive element simulates the onset and propagation of the delamination in advanced composite materials. The delamination model is formulated by using a rigorous thermodynamic framework which takes into account the changes of mixed-mode loading conditions. The model is validated by comparing the finite element predictions with experimental data obtained in interlaminar fracture tests under quasi-static loading conditions.
E. . González, P. . Maimí, A. . Turon, P. . Camanho and J. . Renart, "Simulation of delamination by means of cohesive elements using an explicit finite element code," Computers, Materials & Continua, vol. 9, no.1, pp. 51–92, 2009. https://doi.org/10.3970/cmc.2009.009.051
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