Meso-Scale Finite Element Model for Rib-Stiffened Composites with Biaxial Weft-Knitted Reinforcements

Shell-rib structures made of textile-reinforced composites are used in a wide range of applications to increase bending, buckling and torsional stiffness. Such composites are usually manufactured in differential construction at the preform level by assembling several textile structures or at the com...

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Bibliographic Details
Published in:Journal of composites science 2023-04, Vol.7 (5), p.175
Main Authors: Pham, Minh Quang, Bollengier, Quentin, Rabe, David, Lang, Tobias Georg, Häntzsche, Eric, Trümper, Wolfgang, Cherif, Chokri, Gereke, Thomas
Format: Article
Language:English
Subjects:
Aircraft
Bend strength
biaxial weft-knitted fabrics (BWKF)
Composite materials
Fiber reinforced plastics
Fiber reinforced polymers
fiber-reinforced polymer (FRP)
Fibrous composites
Finite element method
Knitting
Manufacturing
Mathematical models
Mechanical properties
meso-scale model
Mesoscale phenomena
Methods
Needlework
net shape composites
Preforms
Production processes
Scale models
Stiffening
Stiffness
Textile composites
Textile fabrics
Textiles
Warp
Weft
Yarn
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Summary:Shell-rib structures made of textile-reinforced composites are used in a wide range of applications to increase bending, buckling and torsional stiffness. Such composites are usually manufactured in differential construction at the preform level by assembling several textile structures or at the component level by the subsequent joining of separately manufactured shells and stiffening structures. Integral preform production is one way to overcome the disadvantages of the forenamed methods, such as high manual effort, failure during assembling or fiber distortion. Weft-knitting technology is excellent for achieving integral preforms for shell-rib components with a strong connection between the shell and the rib, especially while producing biaxial weft-knitted fabrics (BWKF) with reinforcing yarns in the warp and weft direction to improve its mechanical behavior. In this work, the possibilities of the knitting technique are investigated, and a finite element model for comparing different variants is developed and validated. A meso-scale Finite-Element-Method (FEM) model of the BWKF is used. The simulation results with the meso-scale model show a good correlation with experimental data by a description of bending strength and stiffness of different FRP configuration variations. The model can be used in further investigation of fiber-reinforced polymer (FRP) made from BWKF.
ISSN:2504-477X
2504-477X
DOI:10.3390/jcs7050175