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Author(s): Luís M. P. Durão
Marcelo F. S. F. de Moura
António T. Marques
Title: Drilling Process Simulation on Composite Laminates
Issue Date: 2007
Abstract: Despite of the fact that their physical properties made them an attractive family ofmaterials, composites machining can cause several damages like delamination, fibre pull-out,thermal degradation and others. It is possible to derive the axial thrust force during drillingthat causes delamination onset, using analytical models based on LEFM. In this work, a finiteelement model considering solid elements of ABAQUS® software library and own interfacefinite elements including a cohesive damage model was developed in order to simulate thrustforces and delamination onset during drilling. Results of thrust force for delamination onsetare compared with analytical models. Three different configurations of fibre reinforced laminatesare considered: carbon/epoxy laminates, glass/epoxy laminates and hybrid laminates.Values of interlaminar fracture toughness in mode I were obtained in DCB tests for all configurations.Results show that a hybrid interface consisting of carbon/epoxy and glass/epoxyplies has interlaminar fracture toughness in mode I similar to a carbon/epoxy interface. Consequencesin terms of critical thrust force for delamination onset and propagation are discussed.
Subject: Outras ciências da engenharia e tecnologias
Other engineering and technologies
Scientific areas: Ciências da engenharia e tecnologias::Outras ciências da engenharia e tecnologias
Engineering and technology::Other engineering and technologies
Source: ECCOMAS Thematic Conference Mechanical Response of Composites - Composites 2007
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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