Pressure-Sensitivity and Constitutive Modeling of an Elastomer at High Strain Rates

Jiao, Tifeng; Clifton, R. J.; Grunschel, Stephen

doi:10.1063/1.3295026

Cited by 25 publications

(6 citation statements)

References 2 publications

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“…In addition, as pointed out, the model entails the use of additional methods in order to assess the hydrostatic stress. While the model proposed by Jiao et al (2009) is quite similar to the Qi and Boyce (2005) model, and considers the presence of two branches, one hyperelastic and the other elastic/viscoplastic, the following main differences have been identified:…”

Section: Microstructuredependent Materials Modelmentioning

confidence: 99%

Molecular- and domain-level microstructure-dependent material model for nano-segregated polyurea

Grujičić¹,

Snipes²,

Ramaswami³

et al. 2013

Multi Modelg in Mat & Struct

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Purpose -Polyurea is an elastomeric two-phase co-polymer consisting of nanometer-sized discrete hard (i.e. high glass transition temperature) domains distributed randomly within a soft (i.e. low glass transition temperature) matrix. A number of experimental investigations reported in the open literature clearly demonstrated that the use of polyurea external coatings and/or internal linings can significantly increase blast survivability and ballistic penetration resistance of target structures, such as vehicles, buildings and field/laboratory test-plates. When designing blast/ballistic-threat survivable polyurea-coated structures, advanced computational methods and tools are being increasingly utilized. A critical aspect of this computational approach is the availability of physically based, high-fidelity polyurea material models. The paper aims to discuss these issues. Design/methodology/approach -In the present work, an attempt is made to develop a material model for polyurea which will include the effects of soft-matrix chain-segment molecular weight and the extent and morphology of hard-domain nano-segregation. Since these aspects of polyurea microstructure can be controlled through the selection of polyurea chemistry and synthesis conditions, and the present material model enables the prediction of polyurea blast-mitigation capacity and ballistic resistance, the model offers the potential for the "material-by-design" approach. Findings -The model is validated by comparing its predictions with the corresponding experimental data. Originality/value -The work clearly demonstrated that, in order to maximize shock-mitigation effects offered by polyurea, chemistry and processing/synthesis route of this material should be optimized.

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Section: Microstructuredependent Materials Modelmentioning

confidence: 99%

Molecular- and domain-level microstructure-dependent material model for nano-segregated polyurea

Grujičić¹,

Snipes²,

Ramaswami³

et al. 2013

Multi Modelg in Mat & Struct

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show abstract

“…The stiffness of polyurea is highly pressure-dependent and can increase by orders of magnitude with compression [13,[20][21][22][23][24]. The stiffness of polyurea is highly pressure-dependent and can increase by orders of magnitude with compression [13,[20][21][22][23][24].…”

Section: Effect Of Polyurea In Failure Mitigationmentioning

confidence: 99%

Modification and Engineering of HSREP to Achieve Unique Properties

Nemat‐Nasser

Amirkhizi

Holzworth

et al. 2015

Elastomeric Polymers With High Rate Sensitivity

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“…A number of experimental studies have been conducted with a view to characterizing and understanding the shock and impact properties of polyurea [2,3,[19][20][21][22][23][24]. Polyurea exhibits strongly strain-rate dependent behavior and dissipates considerable energy [4].…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics study of the shock response of polyurea

Manav

Ortiz

2021

Polymer

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show abstract

Pressure-Sensitivity and Constitutive Modeling of an Elastomer at High Strain Rates

Cited by 25 publications

References 2 publications

Molecular- and domain-level microstructure-dependent material model for nano-segregated polyurea

Molecular- and domain-level microstructure-dependent material model for nano-segregated polyurea

Modification and Engineering of HSREP to Achieve Unique Properties

Molecular dynamics study of the shock response of polyurea

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