A modified smoothed particle hydrodynamics for modelling fluid-fracture interaction at mesoscale

Chen, Zipeng; Shen, Luming

doi:10.1007/s40571-021-00409-x

Cited by 4 publications

(3 citation statements)

References 68 publications

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“…Compared to the experimental data, the numerical results have higher elastic stiffness, and are more brittle. We note that Chen and Shen (2021), the same group that had conducted the experiment, has the same observations from their numerical simulations using smoothed particle hydrodynamics, as compared in Figure 11(a-i). It was postulated in Chen and Shen (2021) that the inconsistency may be due to the inadequacy of a 2D model in capturing the damage development/stiffness degradation along the thickness direction.…”

Section: Numerical Examples Considering Other Abaqus In-built Featuresmentioning

confidence: 60%

“…We note that Chen and Shen (2021), the same group that had conducted the experiment, has the same observations from their numerical simulations using smoothed particle hydrodynamics, as compared in Figure 11(a-i). It was postulated in Chen and Shen (2021) that the inconsistency may be due to the inadequacy of a 2D model in capturing the damage development/stiffness degradation along the thickness direction. Notwithstanding these differences, the peak forces obtained numerically match well with the experimental data for the two specimens.…”

Section: Numerical Examples Considering Other Abaqus In-built Featuresmentioning

confidence: 60%

“…(a) Comparison between experimental data (Sharafisafa et al., 2018) and numerical structural responses obtained using localizing gradient enhancement, and smoothed particle hydrodynamics (Chen and Shen, 2021); failure patterns from (b) localizing gradient damage model and (c) experimental DIC images (Aliabadian et al., 2021), for the specimens with (i) α=45° and (ii) α=90°.…”

Section: Numerical Examples Considering Other Abaqus In-built Featuresmentioning

confidence: 99%

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A simple implementation of localizing gradient damage model in Abaqus

Zhang

Wang

et al. 2022

International Journal of Damage Mechanics

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With the localizing gradient enhancement, a damage model for quasi-brittle materials is able to achieve regularized softening responses, with localized damage profiles corresponding to the development of macroscopic cracks, to resolve the numerical spurious effects induced by the conventional gradient enhancement. The typical implementation strategy for a gradient enhanced model is to solve the system of governing equations simultaneously. Focusing on the finite element (FE) package Abaqus, a user element subroutine is required to define the finite elements with additional degrees of freedom for the nonlocal field. Moreover, with user elements, additional effort is required to visualize the numerical results. To an inexperienced engineer/researcher, these requirements can be challenging. In this paper, a simple implementation of the localizing gradient damage model is elaborated. By utilizing the in-built coupled thermo-mechanical elements in Abaqus, the user only needs to define the material constitutive laws, as well as the sensitivity terms with respect to the field variables. Post-processing of results can be done directly in Abaqus. The applicability and ease of implementation are demonstrated via several examples, including those that utilize the Abaqus features of element deletion, contact between surfaces, as well as the incorporation of cohesive elements. Sample files can be downloaded from https://github.com/leonghien/Localizing-Gradient-Damage-with-UMAT-UMATHT

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Section: Numerical Examples Considering Other Abaqus In-built Featuresmentioning

confidence: 60%

Section: Numerical Examples Considering Other Abaqus In-built Featuresmentioning

confidence: 60%