Coalescence of Fractures Under Uni-axial Compression and Fatigue Loading

Chen, Y. L.; Ni, Jing; Shao, Wei; Zhou, Yimeng; Azzam, Rafig

doi:10.1007/s00603-011-0186-x

Cited by 14 publications

(4 citation statements)

References 13 publications

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“…The ZWICK-100HFP5100 test apparatus (ZwickRoell, Germany) was employed to apply fatigue loads. For detailed descriptions see Chen et al [42][43][44]. The test procedure started with the mounting of cylindrical samples on the loading frame and bringing the load cell into contact with the sample surface.…”

Section: Fatigue Loading Testsmentioning

confidence: 99%

Performance of soils enhanced with eco-friendly biopolymers in unconfined compression strength tests and fatigue loading tests

et al. 2020

Construction and Building Materials

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Section: Fatigue Loading Testsmentioning

confidence: 99%

Performance of soils enhanced with eco-friendly biopolymers in unconfined compression strength tests and fatigue loading tests

et al. 2020

Construction and Building Materials

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“…When rock is under high in-situ stress and dynamic loading conditions, plastic deformation occurs and extensive micro-cracks are produced. During the loading test, the internal characteristics of the rock will be deteriorated, and irreversible damage in the internal structure of the rock will occur (Chen et al, 2012;Liu and Xu, 2015;Luo et al, 2014). To describe the irreversible damage, continuum damage mechanics was developed, and the damage variable was defined by many properties of materials, such as elastic modulus, maximum strain and ultrasonic wave velocity (Ju, 1989(Ju, , 1990Rejovitzky and Altus, 2013;Voyiadjis and Kattan, 2009).…”

Section: Influence Of Dynamic Disturbance Type On Damagementioning

confidence: 99%

Experimental study of the dynamically induced rockburst of a rock wall with double free faces

Chen

et al. 2018

International Journal of Damage Mechanics

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Dynamic disturbance is regarded as one of the most significant factors that induce rockburst around the boundary of underground excavation, particularly in high confining pressure conditions. In the present study, three types of dynamic loading tests are conducted to investigate the dynamically triggered rockburst behavior of a rock wall with double free faces. The three types of dynamic loading considered are the large stress single-pulse loading (mild-disturbance), the middle stress low-frequency cyclic loading (modest-disturbance), and the small stress high-frequency cyclic loading (weak-disturbance). The experimental results are analyzed and the damage evolution process during the dynamic disturbances is described. The tests reveal that the failure strain (i.e., the strain at unstable failure) of the dynamically triggered rockburst is greater than that of the self-initiated rockburst. The intensity of rockburst depends not only on the initial static stress level but also on the dynamic disturbance type. The rockburst induced by the mild-disturbance is mainly related to large amounts of disturbance energy imported. The rockburst caused by the modest-disturbance is contributed by the disturbance degradation of ultimate energy-storage capacity of specimen. The rockburst in a weak-disturbance specimen is primarily due to the disturbance aggravation of the damage in specimen and the elastic strain energy release. In particular, the rockburst hazard from the double free faces is more likely to be triggered and its result more serious than that of the rock structure with only one free face because the increasing free face decreases the rock strength. The fragmentation of the dynamically induced rockburst is larger than that of the self-initiated rockburst. With increasing time of dynamic loading, the damage induced by the modest-disturbance and the weak-disturbance first increases continually, subsequently increases steadily, and finally increases drastically. By contrast, the damage of the specimen under the mild-disturbance condition has a linearly increasing trend.

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“…Regarding the specimen size, several researchers have set the dimension of the specimen differently, from 50mm 32mm 5mm  [22] to 635mm 279mm 203mm  [21]. In addition, different materials like Columbia Resin 39 [21], plaster of Paris [22], molded gypsum [3], sandstone [23], Portland cement [24], aluminum [1] and marble [2] have been investigated to study the crack propagation of a single flaw [22]. As to a flaw size, the flaw length has varied from 10 mm to 50 mm , and its aperture ranged from 0.1 mm to 3.0 mm [25].…”

Section: Characteristics Of Brittle Fracture In Rock-like Materials: mentioning

confidence: 99%

Fracturing patterns of rock-like materials in compression captured with peridynamics

Lee

Hong

2015

Engineering Fracture Mechanics

107

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Coalescence of Fractures Under Uni-axial Compression and Fatigue Loading

Cited by 14 publications

References 13 publications

Performance of soils enhanced with eco-friendly biopolymers in unconfined compression strength tests and fatigue loading tests

Performance of soils enhanced with eco-friendly biopolymers in unconfined compression strength tests and fatigue loading tests

Experimental study of the dynamically induced rockburst of a rock wall with double free faces

Fracturing patterns of rock-like materials in compression captured with peridynamics

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