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Modelling and simulation of tow-drop effects arising from the manufacturing of steered-fibre composites

The introduction of Variable-Stiffness Laminates requires not only the use of advanced numerical simulation tools but also better understanding of manufacturing induced effects. These computational tools can give beneficial insight that will lead to an effective reduction of test campaigns as well as to increase design possibilities. This paper presents a virtual testing approach to study the influence of tow-drop effects, generated in the manufacturing of steered-fibre composites, by means of nonlinear finite element analyses within the framework of fracture and damage mechanics. X-ray computed tomography was used to characterise the embedded resin-rich areas. Both the progressive failure mechanisms and the ultimate failure loads can be predicted with high realism when compared with experimental observations. In addition, the differences of the tow-drop effects on plain and notched laminates can also be predicted accurately

The authors acknowledge the financial support of the Ministerio de Economía y Competitividad of Spain under project MAT2009-07918. The first author would also like to thank the Generalitat de Catalunya for the FI pre-doctorate Grant 2010FI_B00658

Elsevier

Manager: Ministerio de Ciencia e Innovación (Espanya)
Author: Falcó Salcines, Olben
Lopes, Cláudio Saúl
Naya, F.
Sket, F.
Maimí Vert, Pere
Mayugo Majó, Joan Andreu
Abstract: The introduction of Variable-Stiffness Laminates requires not only the use of advanced numerical simulation tools but also better understanding of manufacturing induced effects. These computational tools can give beneficial insight that will lead to an effective reduction of test campaigns as well as to increase design possibilities. This paper presents a virtual testing approach to study the influence of tow-drop effects, generated in the manufacturing of steered-fibre composites, by means of nonlinear finite element analyses within the framework of fracture and damage mechanics. X-ray computed tomography was used to characterise the embedded resin-rich areas. Both the progressive failure mechanisms and the ultimate failure loads can be predicted with high realism when compared with experimental observations. In addition, the differences of the tow-drop effects on plain and notched laminates can also be predicted accurately
The authors acknowledge the financial support of the Ministerio de Economía y Competitividad of Spain under project MAT2009-07918. The first author would also like to thank the Generalitat de Catalunya for the FI pre-doctorate Grant 2010FI_B00658
Document access: http://hdl.handle.net/2072/299563
Language: eng
Publisher: Elsevier
Rights: Tots els drets reservats
Subject: Elements finits, Mètode dels
Finite element method
Resistència de materials
Strength of materials
Fibres
Fibers
Title: Modelling and simulation of tow-drop effects arising from the manufacturing of steered-fibre composites
Type: info:eu-repo/semantics/article
Repository: Recercat

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