The influence of aspect ratio on the determination of tearing energy in mode I fracture tests

Kahle, E.; Ehret, Alexander E.; Mazza, Edoardo

doi:10.1016/j.engfracmech.2023.109315

Cited by 2 publications

(6 citation statements)

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“…The mentioned advantages are contingent upon certain assumptions, some of these were investigated in prior research (Kahle et al, 2023;Yeoh, 2001) . For example, the energy release rate derived by Rivlin and Thomas (Rivlin and Thomas, 1953) did not account for edge effects.…”

Section: Introductionmentioning

confidence: 99%

“…In the same paper (Yeoh, 2001), Yeoh also studied the dependence of J on crack length. In a recent study by Kahle et al (Kahle et al, 2023), the influence of aspect ratio on J was investigated. Their samples had a fixed crack length of 20 mm and a width of 60 mm.…”

Section: Introductionmentioning

confidence: 99%

“…This feature was not considered in Yeoh's work (Yeoh, 2001) which was based on the neo-Hookean model (Rivlin, 1948b). Additionally, we are especially interested in examining the relationship between energy release rate and crack length, a topic that Kahle et al (Kahle et al, 2023) did not study. As stated by Kahle et al (Kahle et al, 2023), their findings are influenced by the strain stiffening behavior of the polymer, which makes it difficult to establish a universal criterion.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, we are especially interested in examining the relationship between energy release rate and crack length, a topic that Kahle et al (Kahle et al, 2023) did not study. As stated by Kahle et al (Kahle et al, 2023), their findings are influenced by the strain stiffening behavior of the polymer, which makes it difficult to establish a universal criterion. We also study how aspect ratio, stretch and the constitutive model effects the evaluation of W  .…”

Section: Introductionmentioning

confidence: 99%

“…Our motivation to examine the relation between energy release rate and crack length originates from crack growth experiments. While the works of Yeoh (Yeoh, 2001) and Kahle et al, (Kahle et al, 2023) predominantly concentrate on the determination of fracture toughness, the use of a PS specimen also provides valuable information into crack growth dynamics. Traditionally, a long initial crack is used in crack growth experiments to maintain a constant energy release rate throughout the experiment.…”

Section: Introductionmentioning

confidence: 99%

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Energy Release Rate of a Mode-I Crack in Pure Shear Specimens Subjected to Large Deformation

Zhu

Wang

Zehnder

et al. 2023

Preprint

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The Pure Shear (PS) crack specimen is widely employed to assess the fracture toughness of soft elastic materials. It serves as a valuable tool for investigating the behavior of crack growth in a steady-state manner following crack initiation. One of its advantages lies in the fact that the energy release rate (J) remains approximately constant for sufficiently long cracks, independent of crack length. Additionally, the PS specimen facilitates the easy evaluation of J for long cracks by means of a tension test conducted on an uncracked sample. However, the lack of a published expression for short cracks currently restricts the usefulness of this specimen. To overcome this limitation, we conducted a series of finite element (FE) simulations utilizing three different constitutive models, namely the neo-Hookean (NH), Arruda-Boyce (AB), and Mooney-Rivlin (MR) models. Our finite element analysis (FEA) encompassed practical crack lengths and strain levels. The results revealed that under a fixed applied displacement, the energy release rate (J) monotonically increases with the crack length for short cracks, reaches a steady-state value when the crack length exceeds the height of the specimen, and subsequently decreases as the crack approaches the end of the specimen. Drawing from these findings, we propose a simple closed-form expression for J that can be applied to most hyper-elastic models and is suitable for all practical crack lengths, particularly short cracks.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%