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

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Falcó Salcines, Olben
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Lopes, Cláudio Saúl
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Naya, F.
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Sket, F.
orcId Maimí Vert, Pere​ researcherId Maimí Vert, Pere​ scopusId Maimí Vert, Pere​ ​
Maimí Vert, Pere
orcId Mayugo Majó, Joan Andreu​ researcherId Mayugo Majó, Joan Andreu​ scopusId Mayugo Majó, Joan Andreu​ ​
Mayugo Majó, Joan Andreu
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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 ​
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