2026-04-17T20:26:09Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/78962024-06-14T08:50:29Zcom_2072_452955com_2072_2054col_2072_453061

An Engineering Solution for using Coarse Meshes in the Simulation of Delamination with Cohesive Zone Models Turon Travesa, Albert Dávila, Carlos G. Camanho, Pedro Manuel Ponces Rodrigues de Castro Costa i Balanzat, Josep Mecànica de fractura Fracture mechanics Materials compostos -- Mètodes de simulació Composite materials -- Simulation methods Materials compostos -- Fatiga Composite materials -- Fatigue Materials compostos -- Deslaminatge Composite materials -- Delamination NASA/TM-2005-213547 This paper presents a methodology to determine the parameters used in the simulation of delamination in composite materials using decohesion finite elements. A closed-form expression is developed to define the stiffness of the cohesive layer. A novel procedure that allows the use of coarser meshes of decohesion elements in large-scale computations is proposed. The procedure ensures that the energy dissipated by the fracture process is correctly computed. It is shown that coarse-meshed models defined using the approach proposed here yield the same results as the models with finer meshes normally used in the simulation of fracture processes 2005 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/10256/7896 http://hdl.handle.net/10256/7896 eng Tots els drets reservats info:eu-repo/semantics/openAccess application/pdf National Aeronautics and Space Administration © NASA TM Technical Reports, 2005, núm. 213547 Articles publicats (D-EMCI)