The influence of the apparent shear modulus on the response of transversely isotropic soft materials under simple shear

Moreira, C.S.; Faria, Renato Penha; Mendes, Sarah S.; Nunes, L.C.S.

doi:10.1016/j.euromechsol.2019.103888

Cited by 7 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In engineering designs, one needs to implement fiber-reinforced incompressible hyperelastic models in commercial finite element codes. Consequently, the calibration is a crucial step, which consists in estimating the model parameters "at best" from measured displacement field and applied forces [10,13,22,27]. Due to the complex behavior of fiber-reinforced incompressible hyperelastic materials, the model parameter calibration requires complex experimental protocols, from experimental setup and sample (e.g., complex multiaxial loadings, optimized geometry).…”

Section: Statement and Formulation Of The Problemmentioning

confidence: 99%

“…Also, the block has a tendency to expand in the direction perpendicular to the applied shearing force (a positive Poynting effect); noting that, some biopolymers and soft tissues exhibit a negative Poynting effect [10][11][12]. Recently, experiments have been performed in order to establish a connection between boundary conditions, shear modulus, and angle orientation of fibers in transversely isotropic soft materials [13]. In simple shear testing, it was pointed out that, the challenge is to evaluate out-of-plane strains and inhomogeneities of strain fields in the core region of a specimen [12].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On behavior of transversely isotropic incompressible hyperelastic materials under multiaxial stretching

Methia

Bechir

Yaya

2023

Preprint

View full text Add to dashboard Cite

Nowadays, mechanical behavior of soft materials are characterized by using standard tests: uniaxial traction, simple shear (or combination) and equibiaxial tension. However, the multiaxial testing data are necessary in order to characterize the anisotropy, which is posing formidable technical challenges. We propose a new method to investigate multiaxial behavior of fiber-reinforced hyperelastic solids. The test protocol consists to deform a thin rectangular sample by coupling both the pure shear and simple shear loadings. The specimen is mounted and oriented by an angle in the plane of a special device, which is attached to a universal testing machine. So, the direction of stretching is dictated by in such way that, the stress-strain relations depend on and magnitude of the displacement prescribed on the sample edge, i.e. . The shape factor of the sample is assumed to dictate the direction of transverse isotropy in the reference configuration. Thereby, the direction of stretching could be taken neither parallel nor perpendicular to the stretching-direction. But also, it could be chosen parallel to the direction of transverse isotropy. Based on, we have revisited the standard results, established new ones, and investigated the anisotropy. We demonstrated that, the Cauchy stress fields are depending on the multiaxiality in the core region of the sample. So, the experimental data arising from this test could be used for both parameter calibration and/or validation of transversely isotropic incompressible hyper elastic models.

show abstract

Section: Statement and Formulation Of The Problemmentioning

confidence: 99%