Elasticity

Gent, A. N.

doi:10.3139/9783446428713.003

Cited by 10 publications

(6 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To analyze behavior of elastomers in large deformations, the large elastic deformation theory is required to be considered [12]. Most continuum mechanics of rubber elasticity begin with the fundamental basis of continuum mechanics for an isotropic hyperelastic material, which is that the strain energy density must depend on stretch via one or more of the three invariants of stretch tensor [2].…”

Section: Constitutive Modelsmentioning

confidence: 99%

Hyperelastic model analysis of stress-strain behavior in polybutadiene/ethylene-propylene diene terpolymer nanocomposites

Shokoohi

Naderi

Mehdi

et al. 2015

J Vinyl Addit Technol

View full text Add to dashboard Cite

Micromechanics of elastomer nanocomposite samples based on polybutadiene (BR), ethylene‐propylene diene terpolymer (EPDM) hyperelastic matrixes prepared via melt compounding was investigated using uniaxial tensile analysis. Constitutive hyperelastic models, including Polynomial, Yeoh, Ogden, Arruda‐Boyce, and Van der Waals were used to determine material parameters in incompressible isotropic elastic strain‐energy functions on the basis of a nonlinear least squares optimization method by fitting the data obtained from uniaxial classic experiments. Effect of nanoclay (0, 3, 5, 7, and 10 phr) content on the simulation accuracy was investigated. Simulation results compared with the experimental data suggested that the Ogden model as the most consistent model investigated here. J. VINYL ADDIT. TECHNOL., 23:21–27, 2017. © 2015 Society of Plastics Engineers

show abstract

Section: Constitutive Modelsmentioning

confidence: 99%

Hyperelastic model analysis of stress-strain behavior in polybutadiene/ethylene-propylene diene terpolymer nanocomposites

Shokoohi

Naderi

Mehdi

et al. 2015

J Vinyl Addit Technol

View full text Add to dashboard Cite

show abstract

“…To analyze rubber behavior in large deformations, the large elastic deformation theory is required to be considered [28]. According to Rivlin's phenomenological theory rubbers are assumed to be isotropic and compressible.…”

Section: Simulation Hyper-elastic Modelsmentioning

confidence: 99%

An investigation into hyper‐elastic behavior of BR/epoxy‐polyester hybrid/nanoclay nanocomposites

Zoghi

Naderi

Shokoohi³

2017

Polymer Composites

View full text Add to dashboard Cite

Butadiene Rubber (BR) was compounded with different compositions of Cloisite 15 and epoxy‐polyester hybrid (EPH), a powder coating waste, using a laboratory‐scale internal mixer at 100°C. Micromechanics of BR/Cloisite 15A (100/3, 100/5, and 100/7), BR/EPH (100/10, 100/20, 100/30, and 100/40) and BR/EPH/Cloisite 15A (100/20/3, 100/20/5, and 100/20/7) compounds were compared to the pure BR through uniaxial tensile and compression measurements. Micromechanical models including Halpin‐Tsai, Leidner‐Woodhams, Pukanszky, and Guth were used to estimate the nanoclay aspect ratio among which Halpin‐Tsai could present more acceptable conclusions confirmed with transmission electron microscopy (TEM). Finite element modeling through constitutive hyper‐elastic models, that is, Arruda‐Boyce, Marlow, Third‐order Ogden, Mooney‐Rivlin, second‐order polynomial, Van der Waals, Neo‐Hooke, and Yeoh was conducted (ABAQUS® software). Simulation results compared with the experimental data suggested that Marlow, Van der Waals, and Yeoh could describe the behavior of this material at whole strain ranges with an acceptable accuracy. POLYM. COMPOS., 39:E2028–E2035, 2018. © 2017 Society of Plastics Engineers

show abstract

“…Subsequently, E dyn showed a lower rate of reduction and became more stable—even slight increases were monitored; therefore, the material stiffness remained essentially constant in the last stages of fatigue. The initial decrease and the successive stabilization were associated with cyclic stress softening [ 66 ], which seems to be connected to the breakdown and reformation of filler–molecule interactions [ 67 ]. On the other hand, E sec shows a steady drop for the entire test duration, as a consequence of the continuous stress relaxation and accumulation of damage during the test.…”

Section: Resultsmentioning

confidence: 99%

Fatigue Analysis and Defect Size Evaluation of Filled NBR including Temperature Influence

et al. 2022

View full text Add to dashboard Cite

The fatigue behavior of a filled non-crystallizing elastomer was investigated on axisymmetric dumbbell specimens. By plotting relevant Wöhler curves, a power law behavior was found. In addition, temperature increases due to heat build-up were monitored. In order to distinguish between initiation and crack growth regimes, hysteresis curves, secant and dynamic moduli, dissipated and stored energies, and normalized minimum and maximum forces were analyzed. Even though indications related to material damaging were observed, a clear trend to recognize the initiation was not evident. Further details were revealed by considering a fracture mechanics. The analysis of the fracture surfaces evidenced the presence of three regions, associated to initiation, fatigue striation, and catastrophic failure. Additional fatigue tests were performed with samples in which a radial notch was introduced. This resulted in a reduction in lifetime by four orders of magnitude; nevertheless, the fracture surfaces revealed similar failure mechanisms. A fracture mechanics approach, which considered the effect of temperature, was adopted to calculate the critical defect size for fatigue, which was found to be approximately 9 μm. This value was then compared with the particle size distribution obtained through X-ray microcomputed tomography (μ-CT) of undamaged samples and it was found that the majority of the initial defects were indeed smaller than the calculated one. Finally, the evaluation of J-integral for both unnotched and notched dumbbells enabled the assessment of a geometry-independent correlation with fatigue life.

show abstract

Elasticity

Cited by 10 publications

References 66 publications

Hyperelastic model analysis of stress-strain behavior in polybutadiene/ethylene-propylene diene terpolymer nanocomposites

Hyperelastic model analysis of stress-strain behavior in polybutadiene/ethylene-propylene diene terpolymer nanocomposites

An investigation into hyper‐elastic behavior of BR/epoxy‐polyester hybrid/nanoclay nanocomposites

Fatigue Analysis and Defect Size Evaluation of Filled NBR including Temperature Influence

Contact Info

Product

Resources

About