Constitutive modeling of the rate-dependent resilient and dissipative large deformation behavior of a segmented copolymer polyurea

Cho, Hansohl; Rinaldi, R.G.; Boyce, Mary C.

doi:10.1039/c3sm27125k

Cited by 52 publications

(30 citation statements)

References 64 publications

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“…The increase in strain rate decreases the mobility of polymer chain indicating that the polymer chains become stiffer [44,45]. At high strain rate the soft domains do not completely relax and provide additional resistance to the deformation and hence the peak stress becomes higher [46]. For GF/PDMS the increment of M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 20 peak stress with strain rate is very less, it is almost strain rate independent.…”

Section: Quasi-static Compression Testmentioning

confidence: 99%

Temperature dependent compressive behavior of graphene mediated three-dimensional cellular assembly

Ghosh

Reddy

Sridhar

et al. 2016

Carbon

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Section: Quasi-static Compression Testmentioning

confidence: 99%

Temperature dependent compressive behavior of graphene mediated three-dimensional cellular assembly

Ghosh

Reddy

Sridhar

et al. 2016

Carbon

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“…35 Numerically, the model is implemented following standard viscoplastic descriptions of polymers. 1,36,37 With the decomposition of the deformation gradient into elastic and creep deformation F = F e • F cr , we assume the plastic stretch rate has the form D cr =˙ cr 3 2σ σ where σ is the deviatoric Cauchy stress,σ = 3 2 σ ij σ ij is the equivalent deviatoric Cauchy stress and˙ cr is the equivalent creep strain rate. The creep deformation can be calculated by integration of the plastic stretch rate using standard methods 36 .…”

Section: Impact Of Temperaturementioning

confidence: 99%

“…An interesting example is polyurea, which exhibits a phase separated structure with a soft matrix and nanometric stiff domains resulting from hydrogen bond (H-bond) association. 1 Polyurea shows excellent scratch and impact resistance properties and is used for high performance coatings.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular Structure for Large Strain Dissipation and Outstanding Impact Resistance in Polyvinylbutyral

et al. 2019

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For decades, poly(vinylbutyral) (PVB) has been the polymer of choice to improve the impact resistance of laminated glass. PVB presents large rupture strain, large tensile strength and excellent dissipative properties. Here we investigate the relation between macromolecular structure and mechanical properties of plasticised PVB by combining large strain tensile experiments with calorimetry, X-ray and birefringence measurements. We find that the mechanical response is dominated by creep and that this plastic-like flow can effectively be described by a strain dependent viscosity. The commonalities with other toughened polymeric materials are outlined, and especially the role played by phase separated domains with weaker physical bonds. These results could help optimize polymer design for toughness and impact applications.

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“…Here, further attention was given to the material mechanical properties. Nevertheless, when used as the model material, the table tennis ball's celluloid constitutive behavior could be described as an elastic perfectly plastic material [11] even though polymers are known to be dissipative rate-dependent materials [13,14]. Recently, Zhang et.…”

Section: Introductionmentioning

confidence: 99%

Table Tennis Ball Impacting Racket Polymeric Coatings: Experiments and Modeling of Key Performance Metrics

Rinaldi

Manin

Moineau³

et al. 2019

Applied Sciences

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The performance of a table tennis racket is often associated with subjective or quantitative criteria such as the adhesion, the control and the speed. Overall, the so-called performance aims at characterizing the impact with the ball. Ultimately, the polymeric layers glued onto the wooden blade play a key role, as evidenced in a previous work where the normal linear (no spin) impact of a ball onto polymeric layers was experimentally and numerically investigated. In this work, more realistic loading conditions leading to varying the incident angle and spin of the ball, were explored. While the sole linear restitution coefficient was determined in the anterior normal impact study, new physical metrics were identified to describe fully the trajectory of the reflected ball after impact. A companion 3D finite elements model was developed where the polymeric time-dependent dissipative compliant behavior measured with dynamic mechanical analysis and compression tests was accounted for. The confrontations with the experimental data highlighted the key role of the polymer intrinsic properties along with the friction coefficient between the ball and the polymer external layer.

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Constitutive modeling of the rate-dependent resilient and dissipative large deformation behavior of a segmented copolymer polyurea

Cited by 52 publications

References 64 publications

Temperature dependent compressive behavior of graphene mediated three-dimensional cellular assembly

Temperature dependent compressive behavior of graphene mediated three-dimensional cellular assembly

Supramolecular Structure for Large Strain Dissipation and Outstanding Impact Resistance in Polyvinylbutyral

Table Tennis Ball Impacting Racket Polymeric Coatings: Experiments and Modeling of Key Performance Metrics

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