What question did this study set out to answer?

To establish an improved bond-based peridynamic model that accounts for rock heterogeneity and distinguishes between tensile and compressive fracture mechanisms during crack propagation.

October 1, 2022Royal Society Open ScienceOpen Access

Improved peridynamic model and its application to crack propagation in rocks

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Authors

LZLuming ZhouTsinghua University SZShu ZhuHohai University ZZZhende Zhu

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Implication

Computational modeling reveals eight crack aggregation modes in heterogeneous rock, demonstrating improved simulation of tension-compression fracture mechanics.

Key Points

To establish an improved bond-based peridynamic model that accounts for rock heterogeneity and distinguishes between tensile and compressive fracture mechanisms during crack propagation.
Formulated an improved bond-based peridynamics framework incorporating different fracture criteria for tension and compression, integrating a Weibull distribution to simulate rock heterogeneity.
Simulated compressive loading on intact rock specimens and specimens containing one, two, or three pre-existing flaws, validating results against published laboratory test data.
Analyzed the effects of flaw length, flaw inclination angle, and rock bridge inclination angle on wing crack extension and crack coalescing modes.
The improved model successfully matched experimental crack propagation pathways across intact and multi-flawed rock specimens under compressive loading.
Identified eight distinct crack aggregation modes that develop under varying rock bridge inclination angles.
Determined that wing crack propagation length varies systematically as a function of pre-existing flaw length and inclination angle.

Cite This Study

Zhou et al. (2022) studied this question.

synapsesocial.com/papers/6a9527557fee36836682887d https://doi.org/10.1098/rsos.221013

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Implication

Computational modeling reveals eight crack aggregation modes in heterogeneous rock, demonstrating improved simulation of tension-compression fracture mechanics.

Improved peridynamic model and its application to crack propagation in rocks

Discussion

Member takes

Implication

Key Points

Cite This Study

Improved peridynamic model and its application to crack propagation in rocks

Discussion

Member takes

Implication

Key Points

Cite This Study

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