Predicting the thermomechanical properties of an epoxy resin blend as a function of temperature and strain rate

Foreman, Joel P.; Porter, David; Behzadi, Shabnam; Curtis, P.; Jones, Frank R.

doi:10.1016/j.compositesa.2009.10.015

Cited by 43 publications

(18 citation statements)

References 7 publications

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“…However, since they are empirical, they require a large data set to adequately calibrate all of the model parameters, which can make them unwieldy for describing many materials. Another model which directly links the constitutive behavior of polymers to the frequency and temperature dependence, thereby implicitly including the effects of lower order transitions on the rate dependence is the Porter-Gould model [30][31][32][33][34]. This model also has the advantage of being able to predict a number of key polymer properties from knowledge of the polymer chain composition without the need for extensive calibration data.…”

Section: Introductionmentioning

confidence: 99%

High Strain Rate Mechanics of Polymers: A Review

Siviour

Jordan

2016

J. dynamic behavior mater.

272

121

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The mechanical properties of polymers are becoming increasingly important as they are used in structural applications, both on their own and as matrix materials for composites. It has long been known that these mechanical properties are dependent on strain rate, temperature, and pressure. In this paper, the methods for dynamic loading of polymers will be briefly reviewed. The high strain rate mechanical properties of several classes of polymers, i.e. glassy and rubbery amorphous polymers and semi-crystalline polymers will be reviewed. Additionally, time-temperature superposition for rate dependent large strain properties and pressure dependence in polymers will be discussed. Constitutive modeling and shock properties of polymers will not be discussed in this review.

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Section: Introductionmentioning

confidence: 99%

High Strain Rate Mechanics of Polymers: A Review

Siviour

Jordan

2016

J. dynamic behavior mater.

272

121

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“…The tensile and compressive stresses at the PEL point are related empirically to the stresses at the UTS and CYS points. Elastic moduli in tension and compression are practically identical (Foreman et al 2010). However, bimodulus material constants (γ ≠ 1) are considered in tension and compression.…”

Section: Strain Softening With Plastic Flow In Tension and Compressionmentioning

confidence: 99%

Analytical Solution for Flexural Response of Epoxy Resin Materials

2012

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A piecewise linear parametric uniaxial stress-strain approach has been used to obtain the closed form nonlinear moment curvature response on the basis of strain compatibility in bending for epoxy resin materials. The stress-strain curves, consisting of a bilinear ascending curve followed by strain softening and constant plastic flow in tension and compression, are described by two main parameters, with an additional five nondimensional tensile and seven nondimensional compressive parameters. The main parameters are the modulus of elasticity and strain at the proportional elastic limit point in tension. Parametric studies show that ultimate tensile stress and compressive yield stresses and tension and compression flow stresses have the highest effects on flexural load carrying capacity. Moment curvature equations, in conjunction with softening localization and static equilibrium conditions, were used to simulate the flexural load-deflection response of a beam under three-point bending (3PB) conditions. The simulations and experiments reveal that the direct use of uniaxial tensile and compressive stress-strain curves underestimates the flexural response caused by the stress gradient and the differences in the effective volume of the body subjected to critical stresses.

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“…Further, recent extensions of the group interaction model have suggested that it might be extended to allow for the interaction between differing side groups. 35,36 Consequently, while not directly considered in the interpretation of material behavior here, in the future this approach may potentially provide a route to numerically predict steric effects. Figure 5 shows typical gelatin, ballistic soap and lard lateral stress profiles.…”

Section: -2mentioning

confidence: 99%

On the dynamic behavior of three readily available soft tissue simulants

Appleby-Thomas¹,

Hazell²,

Wilgeroth³

et al. 2011

Journal of Applied Physics

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Plate-impact experiments have been employed to investigate the dynamic response of three readily available tissue simulants for ballistic purposes: gelatin, ballistic soap (both subdermal tissue simulants), and lard (adipose layers). All three materials exhibited linear Hugoniot equations-of-state in the U S -u P plane. While gelatin behaved hydrodynamically under shock, soap and lard appeared to strengthen under increased loading. Interestingly, the simulants under test appeared to strengthen in a material-independent manner on shock arrival (tentatively attributed to a rearrangement of the amorphous molecular chains under loading). However, material-specific behavior was apparent behind the shock. This behavior appeared to correlate with microstructural complexity, suggesting a steric hindrance effect.

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Predicting the thermomechanical properties of an epoxy resin blend as a function of temperature and strain rate

Cited by 43 publications

References 7 publications

High Strain Rate Mechanics of Polymers: A Review

High Strain Rate Mechanics of Polymers: A Review

Analytical Solution for Flexural Response of Epoxy Resin Materials

On the dynamic behavior of three readily available soft tissue simulants

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