Rate-dependent phenomenological model for self-reinforced polymers

Múgica, J.I.; Aretxabaleta, L.; Ulacia, I.; Aurrekoetxea, J.

doi:10.1016/j.compositesa.2016.01.002

Cited by 5 publications

(5 citation statements)

References 25 publications

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“…Also, a higher shear-to-bending-ratio leads to more delaminations. This results in a higher energy absorption capacity based on higher failure propagation energies In accordance with Mu´gica,40 no significant influence of impact velocity could be derived.…”

Section: Discussionsupporting

confidence: 63%

“…Furthermore, two different impact heights resulting in different loading velocities have been analysed to consider the strain rate-dependent material behaviour of both metal and CFRP material. Although some studies have shown that the influence of impact velocity on the structural response is not significant, 40 the scope of this investigation is to proof this statement for the investigated materials and interfaces. For each configuration, at least five experiments were carried out resulting in 266 experiments in total.…”

Section: Drop Tower Impact Tests and Ductility Indexmentioning

confidence: 83%

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An experimental study on the bending response of multi-layered fibre-metal-laminates

Kuhtz

Buschner

Henseler

et al. 2019

Journal of Composite Materials

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The combination of thin light metal sheets with fibre-reinforced thermoplastic layers in multi-layered fibre-metal-laminates advantageously combines the properties of both material classes. In this way, components can be developed which have both significantly increased specific properties (strength and stiffness with respect to density) and high energy absorption capacity compared with conventional design with mono materials. However, the structural behaviour of crash structures is decisively determined by material behaviour of the thermoplastic and metal constituents as well as the interface properties between both constituents and the corresponding delamination behaviour. To evaluate the structural response of multi-layered fibre-metal-laminates under highly dynamic loading conditions, Charpy tests were performed, where the test parameters, light metal material configuration, support length and laminate thickness, were varied. Moreover, the metal sheet surfaces were pre-treated by embossing to achieve different surface topologies. The influence of the different test parameters on the specific energy absorption capacity was characterised by the analysis of force–displacement curves.

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Section: Discussionsupporting

confidence: 63%

Section: Drop Tower Impact Tests and Ductility Indexmentioning

confidence: 83%

An experimental study on the bending response of multi-layered fibre-metal-laminates

Kuhtz

Buschner

Henseler

et al. 2019

Journal of Composite Materials

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“…G'sell and Jonas [54] developed a constitutive relationship to predict the flow stress behavior of polymeric materials at different constant strain rates. This model has been implemented in its original and modified forms in different works to predict the stress-strain response of polymeric materials at different strain rates and temperatures [55][56][57][58]. The Johnson-Cook model [59] and its variations have also been applied in the literature to describe the tensile and compressive response of polymeric materials [60,61].…”

Section: Introductionmentioning

confidence: 99%

A Coupled Nonlinear Viscoelastic–Viscoplastic Thermomechanical Model for Polymeric Lithium-Ion Battery Separators

Ihuaenyi,

Deng,

Bae

et al. 2023

Batteries

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One of the major concerns in ensuring lithium-ion battery (LIB) safety in abuse scenarios is the structural integrity of the battery separator. This paper presents a coupled viscoelastic–viscoplastic model for predicting the thermomechanical response of polymeric battery separators in abuse scenarios under combined mechanical and thermal loadings. The viscoplastic model is developed based on a rheological framework that considers the mechanisms involved in the initial yielding, change in viscosity, strain softening and strain hardening of polymeric separators. The viscoplastic model is then coupled with a previously developed orthotropic nonlinear thermoviscoelastic model to predict the thermomechanical response of polymeric separators before the onset of failure. The model parameters are determined for Celgard®2400, a polypropylene (PP) separator, and the model is implemented in the LS-DYNA® finite element (FE) package as a user-defined subroutine. Punch test simulations are employed to verify the model predictions under biaxial stress states. Simulations of uniaxial tensile stress–strain responses at different strain rates and temperatures are compared with experimental data to validate the model predictions. The model predictions of the material anisotropy, rate and temperature dependence agree well with experimental observations.

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“…In the case of impact projectile -protection panel, the use of properties without temperature dependence is justified for certain ranges of velocity and mass of the projectiles, by thermal cameras, by results of simulation using models presented in the literature [9], [10], [11], [12], [13], [14], [15], [16] and the characteristics of the materials the panels are made of, some of which (such as aramid or glass fiber composites) having constant properties over a fairly large temperature range. From the documentary study, the modeling of an impact bullet (9 mm or 7.62) in the range taken into account by the authors (100…400 m/s), is analysed as an isothermal event.…”

Section: Introductionmentioning

confidence: 99%

Influence of material characteristics on impact response for fabrics made of glass and aramid fibers

Titire

Rusu²,

Sandu³

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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This paper presents a meso-level FE model of unidirectional yarns in order to point out the difference in impact response for two materials: glass and aramid fibers. The architecture is kept the same, successive layers of yarns, oriented 0° and 90°. The constitutive model for each yarn material is bilinear with hardening, as taken from recent documentation. The projectile is a 9 mm FMJ with the geometry close to the actual one and the metallic alloys for core and jacket are also bilinear with hardening. There were analysed the stages of the impact and failure process, the equivalent stress distributions on yarns and, based on the simulation results, the authors made recommendations for an actual design of a ballistic protection system.

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Rate-dependent phenomenological model for self-reinforced polymers

Cited by 5 publications

References 25 publications

An experimental study on the bending response of multi-layered fibre-metal-laminates

An experimental study on the bending response of multi-layered fibre-metal-laminates

A Coupled Nonlinear Viscoelastic–Viscoplastic Thermomechanical Model for Polymeric Lithium-Ion Battery Separators

Influence of material characteristics on impact response for fabrics made of glass and aramid fibers

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