Effects of intrinsic properties on fracture nucleation and propagation in swelling hydrogels

Jingqian Ding, Ernst W. Remij, Joris J.C. Remmers, Jacques M. Huyghe (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Uittreksel

In numerous industrial applications, the microstructure of materials is critical for performance. However, finite element models tend to average out the microstructure. Hence, finite element simulations are often unsuitable for optimisation of the microstructure. The present paper presents a modelling technique that addresses this limitation for superabsorbent polymers with a partially cross-linked surface layer. These are widely used in the industry for a variety of functions. Different designs of the cross-linked layer have different material properties, influencing the performance of the hydrogel. In this work, the effects of intrinsic properties on the fracture nucleation and propagation in cross-linked hydrogels are studied. The numerical implementation for crack propagation and nucleation is based on the framework of the extended finite element method and the enhanced local pressure model to capture the pressure difference and fluid flow between the crack and the hydrogel, and coupled with the cohesive method to achieve crack propagation without re-meshing. Two groups of numerical examples are given: (1) effects on crack propagation, and (2) effects on crack nucleation. Within each example, we studied the effects of the stiffness (shear modulus) and ultimate strength of the material separately. Simulations demonstrate that the crack behaviour is influenced by the intrinsic properties of the hydrogel, which gives numerical support for the structural design of the cross-linked hydrogel.

TaalEngels
Artikelnummer926
Aantal pagina's12
TijdschriftPolymers
Volume11
Nummer van het tijdschrift5
DOI's
StatusGepubliceerd - 1 mei 2019

Vingerafdruk

Hydrogels
Hydrogel
Swelling
Nucleation
Crack propagation
Cracks
Microstructure
Strategic materials
Structural design
Industrial applications
Flow of fluids
Materials properties
Polymers
Elastic moduli
Stiffness
Finite element method
Industry

Trefwoorden

    Citeer dit

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    title = "Effects of intrinsic properties on fracture nucleation and propagation in swelling hydrogels",
    abstract = "In numerous industrial applications, the microstructure of materials is critical for performance. However, finite element models tend to average out the microstructure. Hence, finite element simulations are often unsuitable for optimisation of the microstructure. The present paper presents a modelling technique that addresses this limitation for superabsorbent polymers with a partially cross-linked surface layer. These are widely used in the industry for a variety of functions. Different designs of the cross-linked layer have different material properties, influencing the performance of the hydrogel. In this work, the effects of intrinsic properties on the fracture nucleation and propagation in cross-linked hydrogels are studied. The numerical implementation for crack propagation and nucleation is based on the framework of the extended finite element method and the enhanced local pressure model to capture the pressure difference and fluid flow between the crack and the hydrogel, and coupled with the cohesive method to achieve crack propagation without re-meshing. Two groups of numerical examples are given: (1) effects on crack propagation, and (2) effects on crack nucleation. Within each example, we studied the effects of the stiffness (shear modulus) and ultimate strength of the material separately. Simulations demonstrate that the crack behaviour is influenced by the intrinsic properties of the hydrogel, which gives numerical support for the structural design of the cross-linked hydrogel.",
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    Effects of intrinsic properties on fracture nucleation and propagation in swelling hydrogels. / Ding, Jingqian; Remij, Ernst W.; Remmers, Joris J.C.; Huyghe, Jacques M. (Corresponding author).

    In: Polymers, Vol. 11, Nr. 5, 926, 01.05.2019.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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