Mechanical Behavior and Failure Analysis of Rock-Like Materials

The mechanical behaviour of rock-like materials encompasses their response to static and dynamic loads, characterised by strength, stiffness and deformation patterns. Heterogeneities such as pores, fissures, holes and pre-existing flaws govern the initiation and propagation of micro-cracks, which coalesce into macroscopic fractures. Under uniaxial or triaxial loading, key parameters such as peak strength, elastic modulus and critical crack initiation stress quantify resistance to failure. Dynamic impacts, cyclic loading and varying confining pressures further influence fracture evolution, often accelerating instability. Numerical methods, notably the discrete element method and finite element analyses, complement laboratory experiments by visualising stress fields and crack networks. Digital image correlation and acoustic emission monitoring have enhanced real-time mapping of strain localisation and energy release. Interactions between multiple defects give rise to complex failure modes—tensile splitting, shear sliding, block rotation and mixed tensile-shear fractures—each dictated by defect geometry, orientation and spacing. Insights into stress concentration around openings inform design criteria for tunnels, underground caverns and wellbores, mitigating risks such as rockburst and collapse. Current trends emphasise multiscale modelling, machine-learning-assisted parameter calibration and hybrid experimental–numerical frameworks. Such advances underpin safer civil, mining and energy applications by predicting instability thresholds and optimising support strategies in rock engineering.

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Mechanical Behavior and Failure Analysis of Rock-Like Materials publication trend

The graph below shows the total number of articles in mechanical behavior and failure analysis of rock-like materials across all publications each year (not limited to Nature Index journals).

Technical terms

Peak strength: Maximum stress a rock specimen sustains before the onset of irreversible failure.

Elastic modulus: Ratio of stress to elastic strain, indicating material stiffness under load.

Crack coalescence: Process by which individual micro-cracks link to form a continuous fracture.

Stress concentration: Localised amplification of stress around defects such as holes or fissures.

Discrete element method (DEM): Numerical technique modelling materials as assemblies of interacting particles to simulate fracture and deformation.

Tensile failure: Fracture mode dominated by opening stresses perpendicular to crack planes.

References

1. Numerical simulation on the dynamic mechanical response and fracture mechanism of rocks containing a single hole. International Journal of Coal Science & Technology (2024).
2. Strength and failure characteristics of jointed rock mass with double circular holes under uniaxial compression: Insights from discrete element method modelling. Theoretical and Applied Fracture Mechanics (2020).
3. Effect of Multiple Hole Distribution and Shape Based on Particle Flow on Rocklike Failure Characteristics and Mechanical Behavior. Advances in Civil Engineering (2020).