A unified formulation for composite quasi-2D finite elements based on global-local superposition

Lima, André S. de; Faria, Alfredo R. de

doi:10.1016/j.compstruct.2020.112846

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…Consequently, QUAD8 mesh was selected to perform ship general static analysis. It should be noted that shown results were obtained adapting and simple and efficient approach of equivalent single layer theories (ESLT) 28,29 , assigning the same wall thickness to the ship hull and deck, and also to the GFBE biocomposite laminate (3 mm).…”

Section: Model Sensitivity Studymentioning

confidence: 99%

Effects of seawater immersion on a glass fibre reinforced bioepoxy mechanical properties and its application in the ship hull finite-element analysis

Parra

Ramón-Valencia

López-Arraiza³

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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Currently, there is a grown tendency to manufacture environmentally more sustainable composite structures. In this work, a glass fibre reinforced bioepoxy composite was manufactured and submerged in seawater between T = 17[Formula: see text]C and T = 24[Formula: see text]C for a bioactivity period of 6 months. Tensile and flexural tests were performed in order to characterize the new composite before and after seawater immersion. A drop of 20% in Young’s modulus and 9% in tensile strength were observed after immersion. The same trend was analysed in both the flexural modulus and flexural strength, with a fall of 18% and 6%, respectively. It is also remarkable a higher ductility of the specimen after seawater immersion due to a plasticization process by moisture absorption. Those results were confirmed by scanning electron microscopy. Given the mechanical behaviour of the new composite, an L = 6.26 m in length ship hull was designed. Structural analysis was conducted on the suitability and reliability of the composite by using ANSYS software. The simulations revealed the optimal structural performance of the new design even in the extreme sagging situation. To sum up, SuperSap® bioepoxy resin is a suitable matrix to manufacture small glass fibre ship-hulls.

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Section: Model Sensitivity Studymentioning

confidence: 99%