2026-06-02T14:39:48Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/148762026-02-03T11:57:49Zcom_10630_2254col_10630_37959

Experimental numerical correlation of the delamination of composite structures subjected to low speed impact Burgos de la Rosa, Ismael López-Taboada, Carlos Castillo-López, Germán Zabala, Haritz Aretxabaleta, Laurentzi García-Sánchez, Felipe Composites Materiales laminados In this work, we have analyzed the delamination caused by a low velocity impact on carbon-epoxy laminates made with balanced 0/90 braided fabrics and made by resin infusion. The items have been tested with a fall drop system. The numerical simulation was performed using the Explicit Non-Lineal Finite Element Method (NASTRAN SOL700). Delamination was analyzed using cohesive zone models (CZM). The parameters of the Tvergaard and Hutchinson constitutive law have been defined based on experimental fracture data of the laminate and mechanical properties of the resin used. The results show a good correlation (error<2%) regarding the maximum force, contact time and residual stiffness. The good correlation in evaluating the residual stiffness after impact has special interest since it allows the designer to evaluate the integrity level of a structure that has suffered an impact, generating damage. 2017-12-12T11:54:23Z 2017-12-12T11:54:23Z 2017-12-12T11:54:23Z 2017-12-12 conference output https://hdl.handle.net/10630/14876 eng 4th International Conference on Mechanical Models in Structural Engineering (CMMoST 2017) Madrid 29 de Noviembre de 2017 http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional