Micromechanical Viscoelastic Analysis of Flax Fiber Reinforced Bio-Based Polyurethane Composites

Hosseini, Nassibeh; Javid, Samad; Amiri, Ali; Ulven, Chad A.; Karami, G.

doi:10.7569/jrm.2015.634112

Cited by 11 publications

(4 citation statements)

References 23 publications

(25 reference statements)

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“…Hosseini et al. 81 developed RVE models to investigate the viscoelastic properties of NFRCs. The RVE models comprised eight unidirectional cylindrical flax fibers and matrix with perfect bonding assumed.…”

Section: Fe Models For Nfrcsmentioning

confidence: 99%

Finite element models of natural fibers and their composites: A review

Xiong

Shen

Hua

et al. 2018

Journal of Reinforced Plastics and Composites

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Finite element method has been widely applied in modeling natural fibers and natural fiber reinforced composites. This paper is a comprehensive review of finite element models of natural fibers and natural fiber reinforced composites, focusing on the micromechanical properties (strength, deformation, failure, and damage), thermal properties (thermal conductivity), and macro shape deformation (stress–strain and fracture). Representative volume element model is the most popular homogenization-based multi-scale constitutive method used in the finite element method to investigate the effect of microstructures on the mechanical and thermal properties of natural fibers and natural fiber reinforced composites. The representative volume element models of natural fibers and natural fiber reinforced composites at various length scales are discussed, including two types of geometrical modeling methods, the computer-based modeling method and the image-based modeling method. Their modeling efficiency and accuracy are also discussed.

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Section: Fe Models For Nfrcsmentioning

confidence: 99%

Finite element models of natural fibers and their composites: A review

Xiong

Shen

Hua

et al. 2018

Journal of Reinforced Plastics and Composites

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“…The elastic properties of the glass fibre composite, as shown in Samborsky et al (2017), are as follows: Young modulus E 1 = 44.60 GPa , E 2 = 17.00 GPa and E 3 = 16.70 GPa , Poisson ratio ν 12 = 0.262, ν 13 = 0.264 and ν 23 = 0.350, shear modulus G 12 = 3.490 GPa , G 13 = 3.770 GPa and G 23 = 3.460 GPa . The used linoleum fibre composite has the elastic properties as shown in Hosseini et al (2015): Young modulus E 1 = 28.75 GPa , E 2 = 4.310 GPa and E 3 = 4.290 GPa , Poisson ratio ν 12 = 0.370, ν 13 = 0.360 and ν 23 =0.480, shear modulus G 12 = 2.210 GPa , G 13 = 2.230 GPa and G 23 = 1.490 GPa . The percentage of volume fraction for the three fibre types is always 60 per cent.…”

Section: Fibre Characteristicsmentioning

confidence: 99%

Analysis of natural fibre composites for aerospace structures

Brischetto

2018

AEAT

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Purpose The main idea is the comparison between composites including natural fibres (such as the linoleum fibres) and typical composites including carbon fibres or glass fibres. The comparison is proposed for different structures (plates, cylinders, cylindrical and spherical shells), lamination sequences (cross-ply laminates and sandwiches with composite skins) and thickness ratios. The purpose of this paper is to understand if linoleum fibres could be useful for some specific aerospace applications. Design/methodology/approach A general exact three-dimensional shell model is used for the static analysis of the proposed structures to obtain displacements and stresses through the thickness. The shell model is based on a layer-wise approach and the differential equations of equilibrium are solved by means of the exponential matrix method. Findings In qualitative terms, composites including linoleum fibres have a mechanical behaviour similar to composites including glass or carbon fibres. In terms of stress and displacement values, composites including linoleum fibres can be used in aerospace applications with limited loads. They are comparable with composites including glass fibres. In general, they are not competitive with respect to composites including carbon fibres. Such conclusions have been verified for different structure geometries, lamination sequences and thickness ratios. Originality/value The proposed general exact 3D shell model allows the analysis of different geometries (plates and shells), materials and laminations in a unified manner using the differential equilibrium equations written in general orthogonal curvilinear coordinates. These equations written for spherical shells degenerate in those for cylinders, cylindrical shell panels and plates by means of opportune considerations about the radii of curvature. The proposed shell model allows an exhaustive comparison between different laminated and sandwich composite structures considering the typical zigzag form of displacements and the correct imposition of compatibility conditions for displacements and equilibrium conditions for transverse stresses.

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“…Elastic properties and mass density are given for each proposed material. The properties for carbon fiber composite have been obtained from the Department of Defense Handbook (2002), the properties for glass fiber composite have been proposed in Samborsky et al (2016) and the properties for linoleum fiber composite have been described in Hosseini et al (2015). These materials will be used with different lamination sequences and in different structures for a three-dimensional shell analysis, in terms of frequency, when a free vibration problem is solved.…”

Section: Elastic Properties Of Composites Reinforced By Natural and Synthetic Fibersmentioning

confidence: 99%

A comparative study of composite structures reinforced with carbon, glass or natural fibers

Brischetto

2017

MMMS

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Purpose The purpose of this paper is to propose a comparative study between different structures composed of fiber-reinforced composite materials. Plates, cylinders and cylindrical and spherical shell panels in symmetric 0°/90°/0° and antisymmetric 0°/90°/0°/90° configurations are analyzed considering carbon fiber, glass fiber and linoleum fiber reinforcements. Design/methodology/approach A free vibration analysis is proposed for different materials, lamination sequences, vibration modes, half-wave numbers and thickness ratios. Such an analysis is conducted by means of an exact three-dimensional shell model which is valid for simply supported structures and cross-ply laminations. The employed model is based on a layer-wise approach and on three-dimensional shell equilibrium equations written in general orthogonal curvilinear coordinates. Findings The proposed study confirms the well-known superiority of the carbon fiber-reinforced composites. Linoleum fiber-reinforced composites prove to be comparable to glass fiber-reinforced composites in the case of free vibration analysis. Therefore, similar frequencies are obtained for all the geometries, thickness ratios, laminations sequences, vibration modes and a large spectrum of half-wave numbers. This partial conclusion needs further confirmations via static, buckling and fatigue analyses. Originality/value An exact three-dimensional shell model has been used to compare several geometries embedding carbon fiber composites and natural fiber composites.

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Micromechanical Viscoelastic Analysis of Flax Fiber Reinforced Bio-Based Polyurethane Composites

Cited by 11 publications

References 23 publications

Finite element models of natural fibers and their composites: A review

Finite element models of natural fibers and their composites: A review

Analysis of natural fibre composites for aerospace structures

A comparative study of composite structures reinforced with carbon, glass or natural fibers

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