Effects of fiber orientation in a soft unidirectional fiber-reinforced material under simple shear deformation

Moreira, C.S.; Nunes, L.C.S.

doi:10.1016/j.ijnonlinmec.2019.02.001

Cited by 16 publications

(3 citation statements)

References 26 publications

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“…On the other hand, for composite with fibers oriented at 2i = 45 • , the apparent shear modulus is strongly dependent on the stretched fibers. This behavior has also been observed in recent studies [24]. Furthermore, it should be mentioned that out of plane buckling of fibers was not observed.…”

Section: Model Validationsupporting

confidence: 88%

Modeling of an elastic matrix reinforced with two families of fibers under simple shear: a mimic of annulus fibrosus

Junior

Moreira

Nunes

2019

J Braz. Soc. Mech. Sci. Eng.

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A simple model for describing the mechanical behavior of a soft bidirectional-fiber-reinforced composite under simple shear deformation is proposed. Four parameters, including material properties and initial angle of fibers, are required in this model to predict the nonlinear material response. A soft material that was made of silicone rubber and two families of continuous fibers of polypropylene were tested in order to validate the proposed model. Experiments were performed on composite specimens with two distinct fiber orientations. The values of shear strain were evaluated from full-field displacements extracted by the digital image correlation method. The properties of the fibers and the neat matrix were obtained from uniaxial tensile and simple shear tests, respectively. These data were used as input data. The model predictions are in excellent agreement with the experimental data of the elastomeric composite. After validation, the proposed model was used to characterize the shear response of an annulus fibrosus of ovine intervertebral disk, using experimental data from literature. The results indicate that the proposed model is capable of describing the nonlinear response of the annulus fibrosus under simple shear. Moreover, it may be suitable for estimating important mechanical parameters of fibrous soft tissues.

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Section: Model Validationsupporting

confidence: 88%

Modeling of an elastic matrix reinforced with two families of fibers under simple shear: a mimic of annulus fibrosus

Junior

Moreira

Nunes

2019

J Braz. Soc. Mech. Sci. Eng.

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“…The motion is usually applied by sliding the parallel faces of a parallelogram-shaped specimen while maintaining a constant distance between the plates. This type of deformation is extensively used to characterize materials spanning multiple length scales, from elastomers [1] to soft tissues [2] to granular materials [3] and geo-materials, due to the multiple advantages this experimental setup offers over other tests. In simple tension and compression tests, stresses are uniform only in the central part of the sample, making it challenging to measure the corresponding deformations accurately.…”

Section: Introductionmentioning

confidence: 99%

Viscoplastic simple shear at finite strains

Califano,

Ciambella

2023

Proc. R. Soc. A.

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The equations governing the simple shear deformation of an incompressible inelastic material undergoing finite strain are derived in this paper. The constitutive assumptions are kept in their most general form to allow the incorporation of widely used viscoplastic or viscoelastic models from the literature. It is shown that, while for a hyperelastic material the simple shear problem is completely determined by a single parameter, the amount of shear, in the viscoplastic case, the elastic deformation is the superposition of a triaxial stretch and a simple shear, whose determination requires the solution of three coupled nonlinear evolution equations. We evaluate such a solution for different material models and compare it with three-dimensional finite element simulations to assess its accuracy. We further assess the performance of these models using experimental data from filled rubber, focusing on their ability to capture the observed behaviour, such as the well-known Payne effect. Additionally, we extend our simple shear solution to address torsion and the extension of thin-walled cylinders. These derivations and analyses offer valuable insights for experimentalists engaged in the mechanical characterization of soft materials.

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“…Qu et al fabricated PPC/silicon carbide-GO (PPC/SiC-GO) nanocomposites by constructing scroll-like nanohybrids by combining SiC nanowires with GO to achieve superior mechanical, thermal, shape memory, and barrier properties. Furthermore, some studies also attempted to apply external force (such as tensile, , shear, , magnetic field, − and electric field) to obtain nanocomposites with excellent comprehensive properties and specific functionality through the orientation of nanofillers in the polymer matrix. Although the orientation of graphene induced by the magnetic field has been reported in some pieces of literature, − it has not yet appeared in the relevant research reports of the PPC matrix.…”

Section: Introductionmentioning

confidence: 99%

CO₂-Based Poly(propylene carbonate) Functionalized for Sustainable Nanocomposites by a Controllable Magnetic Field

Liang

et al. 2022

ACS Sustainable Chem. Eng.

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To alleviate environmental problems caused by carbon emissions, the modified application of the CO 2 -based polymer has attracted extensive scientific and technological interest. In this study, a series of sustainable nanocomposites were fabricated by a magnetic field with controllable direction to achieve nanofiller orientation in the CO 2 -derived poly(propylene carbonate) (PPC) matrix, and magnetic graphene nanosheets (FG) with varying magnetization were synthesized through a simple coprecipitation process using graphene oxide and iron-containing salts. The resultant nanocomposites not only exhibited anisotropic mechanical properties but also presented anisotropic thermal conductivity (TC) and electromagnetic interference (EMI) shielding properties in different magnetic field directions. The nanocomposites with a parallel orientation showed further significant improvements compared with the vertically oriented nanocomposites in terms of the mechanical properties, in-plane TC, and EMI shielding performances at the same FG loading. This was possibly attributed to the more regular arrangement of the two-dimensional FG nanosheets in the horizontal magnetic field. In addition, these nanocomposites showed a rapid magnetic response when the magnets were in close proximity. This study on PPC/FG nanocomposites with a controllable orientation structure and magnetic response could provide new ideas for the development of applications of CO 2 -based PPC materials in the functional and intelligent material field.

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Effects of fiber orientation in a soft unidirectional fiber-reinforced material under simple shear deformation

Cited by 16 publications

References 26 publications

Modeling of an elastic matrix reinforced with two families of fibers under simple shear: a mimic of annulus fibrosus

Modeling of an elastic matrix reinforced with two families of fibers under simple shear: a mimic of annulus fibrosus

Viscoplastic simple shear at finite strains

CO₂-Based Poly(propylene carbonate) Functionalized for Sustainable Nanocomposites by a Controllable Magnetic Field

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Effects of fiber orientation in a soft unidirectional fiber-reinforced material under simple shear deformation

Cited by 16 publications

References 26 publications

Modeling of an elastic matrix reinforced with two families of fibers under simple shear: a mimic of annulus fibrosus

Modeling of an elastic matrix reinforced with two families of fibers under simple shear: a mimic of annulus fibrosus

Viscoplastic simple shear at finite strains

CO2-Based Poly(propylene carbonate) Functionalized for Sustainable Nanocomposites by a Controllable Magnetic Field

Contact Info

Product

Resources

About

CO₂-Based Poly(propylene carbonate) Functionalized for Sustainable Nanocomposites by a Controllable Magnetic Field