Phase Field Fracture Mechanics.

Robertson, Brett Anthony

doi:10.2172/1227184

Cited by 3 publications

(5 citation statements)

References 3 publications

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“…This observation is different from that obtained by the PFC simulations [13]. In addition, the peak load decreases as the notches increase at a fixed spacing.…”

Section: The Influence Of the Spacingcontrasting

confidence: 90%

“…That is, the strength of the Brazilian disc is not sensitive to the variation in the notch spacing. This observation is different from that obtained by the PFC simulations [13]. Figure 13 shows the final crack patterns of the Brazilian discs with different numbers of horizontally arranged pre-existing notches.…”

Section: The Influence Of the Spacingcontrasting

confidence: 56%

“…6b, c, d). We compare the final crack patterns obtained by the phase field modeling with those obtained from DDM simulation [12], PFC simulation [13], and experimental tests [11]. The observations in Fig.…”

Section: Brazilian Discs With Vertically Arranged Notches 51 Geometrmentioning

confidence: 98%

“…For example, researchers [9] estimated the mixed Mode I/II fracture toughness of rocks by using the cracked straight through Brazilian disk (CSTBD) specimens. However, the knowledge is still limited for understanding the fracture mechanism in the Brazilian discs with multiple pre-existing cracks and some preliminary works are conducted in recent years [10][11][12][13]. These studies basically used the numerical methods to model fracture initiation and propagation and then concluded the fracture mechanism because preparation of the Brazilian discs with multiple pre-existing cracks is difficult in experimental tests [10].…”

Section: Introductionmentioning

confidence: 99%

“…The phase field method has been extensively tested after it was proposed. For example, Robertson [13] examined and compared the PFM simulation with the experimental data.…”

Section: Introductionmentioning

confidence: 99%

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Fracture Propagation in Brazilian Discs with Multiple Pre-existing Notches by Using a Phase Field Method

Zhou

2018

Period. Polytech. Civil Eng.

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The crack propagation in the Brazilian discs with multiple preexisting notches is investigated by using a phase field method. Keywords phase field method, Brazilian disc, multiple notches IntroductionNatural rocks contain abundant cracks and usually show heterogeneity. Under loading, cracks initiate, propagate, and coalesce with other cracks, thereby decreasing the strength of rocks. The initiation and propagation of multiple cracks significantly affect many rock engineering problems, such as rock cutting, hydraulic fracturing, and explosive fracturing [1]. In the past decades, crack propagation in rocks has received attentions from many researches [2][3][4][5], among which many novel tests were applied to investigate crack patterns under compressive loads, such as the notched semi-circular bending tests (NSCB) [6], the cracked chevron notched semi-circular bending method (CCNSCB) [7], and the Brazil splitting tests [8].

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“…This observation is different from that obtained by the PFC simulations [13]. In addition, the peak load decreases as the notches increase at a fixed spacing.…”

Section: The Influence Of the Spacingcontrasting

confidence: 90%

Section: The Influence Of the Spacingcontrasting

confidence: 56%

Section: Brazilian Discs With Vertically Arranged Notches 51 Geometrmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

“…The phase field method has been extensively tested after it was proposed. For example, Robertson [13] examined and compared the PFM simulation with the experimental data.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations