Frequency domain finite element estimates of viscoelastic stiffness of unidirectional composites

Gusev, Andrei A.; Kern, Leyla

doi:10.1016/j.compstruct.2018.02.027

Cited by 12 publications

(11 citation statements)

References 23 publications

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“…It is a bit surprising that the microstructura l effects are the strongest for the axial shear modulus but we cannot offer any immed iate explanation to this fact. Complementary to the results presented in a previous work [21], it is shown that all storage moduli except increase with the volume fraction . The loss moduli, on the other hand, decrease with for and .…”

Section: Effect Of Coating Thicknesssupporting

confidence: 85%

“…However, excellent predictions were still obtained with the hexagona l models. We have already seen such similar behavior in our previous work [21] on unidirectio na l composites with uncoated glass and carbon fibers. It is a bit surprising that the microstructura l effects are the strongest for the axial shear modulus but we cannot offer any immed iate explanation to this fact.…”

Section: Effect Of Coating Thicknesssupporting

confidence: 76%

“…The elastic-viscoelastic correspondence principle has been discussed and used in a recent finite-volume unit cell homogenization study to relate the governing equations in the time and Laplace-Carson domains [20]. In our recent work, uncoated carbon fibers (and glass fibers) in a viscoelastic matrix were studied by comparison with frequency-domain finite element estimates [21].…”

Section: Introductionmentioning

confidence: 99%

“…The latter was generated using a Monte Carlo method by randomly dispersing 32 identical fibers. A detailed description of the Monte Carlo method and the homogenization procedure was given in our recent work [21].…”

Section: Introductionmentioning

confidence: 99%

“…Frequency-domain finite element simulations were performed using COMSOL Multiphys ic s (www.comsol.com) with MATLAB (www.matlab.com), as described in our recent work [21] where a frequency-domain homogenization procedure for the effective viscoelastic constants The models with 32 randomly dispersed fibers had up to two million degrees of freedom and took several minutes computing time. Calculations with hexagonal models, containing only two fibers, were accordingly faster.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Optimizing the damping properties of unidirectional composites by incorporating carbon fibers with a thin viscoelastic coating

Kern

Hine

Gusev

2019

Composite Structures

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Section: Effect Of Coating Thicknesssupporting

confidence: 85%

Section: Effect Of Coating Thicknesssupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Optimizing the damping properties of unidirectional composites by incorporating carbon fibers with a thin viscoelastic coating

Kern

Hine

Gusev

2019

Composite Structures

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Statistical distribution of mechanical properties and energy absorption of laminated cotton fabric reinforced epoxy composites

et al. 2020

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In this work, the statistical distribution of mechanical properties and energy absorption at break of laminated cotton fabric reinforced epoxy composites was determined. The static mechanical tests showed that the cotton fabric significantly influenced the mechanical performance of epoxy resin, where tensile strength, tensile modulus, tensile elongation at break, flexural modulus, and impact strength increased significantly, while flexural strength decreased. The energy absorption behaviors in the tensile tests were investigated, where more energy at tensile break was absorbed when cotton fabric was incorporated, as shown by the 684% to 2707% increase. The similar increases were observed in the flexural and impact tests, which were 92% to 355% and 309% to 833%, in different directions, respectively. The statistical distribution patterns of the mechanical properties parameters in variously direction of cotton fabric reinforced laminate were mapped. The results showed the distribution patterns of tensile modulus, flexural modulus, tensile strength, flexural strength, and energy absorption before maximum stress in the flexural test correlated with fiber angle in the laminate, while the distribution patterns of tensile elongation, impact strength, and energy absorption in the flexural and tensile tests agreed well with distribution of fiber content in the test cross section. With the incorporation of cotton fabric, the breakage behavior of epoxy transitioned from brittle fracture to toughened fracture as shown in distribution patterns of fracture energy absorption. The viscoelastic properties of the cotton fiber‐reinforced laminates were investigated via DMA. The cotton fiber‐reinforced laminates possessed higher transition temperatures, the storage modulus (E') and loss modulus (E"), compared to epoxy.

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Linear viscoelasticity of anisotropic carbon fibers reinforced thermoplastics: From micromechanics to dynamic torsion experiments

Merlette,

Diani

2025

Composites Part B: Engineering

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Frequency domain finite element estimates of viscoelastic stiffness of unidirectional composites

Cited by 12 publications

References 23 publications

Optimizing the damping properties of unidirectional composites by incorporating carbon fibers with a thin viscoelastic coating

Optimizing the damping properties of unidirectional composites by incorporating carbon fibers with a thin viscoelastic coating

Statistical distribution of mechanical properties and energy absorption of laminated cotton fabric reinforced epoxy composites

Linear viscoelasticity of anisotropic carbon fibers reinforced thermoplastics: From micromechanics to dynamic torsion experiments

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