Field-Enriched Finite-Element Method for Simulating Crack Propagation and Coalescence in Geomaterials

Zhou, Xiaoping; Wang, Long; Jia, Z. H.

doi:10.1061/(asce)em.1943-7889.0001972

Cited by 9 publications

(2 citation statements)

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“…Cracking of pavements occurs mainly due to low temperature in cold weather in which the asphalt mixtures exhibit brittle and elastic behavior in such conditions. Thus, to investigate the fracture initiation and propagation behavior of cracked asphalt mixture (containing reflective crack or BUC), the framework of linear elastic fracture mechanics (LEFM) can be employed successfully 7–19 . Stress intensity factors (SIFs) and T ‐stress are the most important parameters of fracture mechanics which indicate the state of stress and strain around the crack tip.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, to investigate the fracture initiation and propagation behavior of cracked asphalt mixture (containing reflective crack or BUC), the framework of linear elastic fracture mechanics (LEFM) can be employed successfully. [7][8][9][10][11][12][13][14][15][16][17][18][19] Stress intensity factors (SIFs) and T-stress are the most important parameters of fracture mechanics which indicate the state of stress and strain around the crack tip. These fracture parameters for pavement structure are functions of the elastic modulus and Poisson's ratio of the asphalt components, the crack length, the thickness of the HMA layer, and so on.…”

Section: Introductionmentioning

confidence: 99%

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Mixed mode I+II fracture parameters and cracking trajectory of heterogeneous multilayer pavement structure containing reflective crack

Ziari

Aliha

Fard

et al. 2022

Fatigue Fract Eng Mat Struct

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Using aggregate generation and packing algorithm technique coupled with finite element method, a part of reconstructed asphalt pavement structure with five layers and containing a bottom-up crack was simulated. For more realistic modeling and more accurate analyzing the cracking behavior of pavement, a region surrounding the initial crack (and bottom-up crack) region and its neighborhood was modeled as a heterogeneous two-phase (aggregate/mastic) mixture. The results of numerical analyses showed that a significant difference exists between the crack tip fracture parameters (i.e., K I , K II , K eff , T-stress, and Biaxiality ratio) of the homogenous and heterogeneous models. The heterogeneous simulation (in this case study) leads to approximately 70% reduction in the effective stress intensity factor. Furthermore, it was shown that the fracture trajectory of a simulative reflective cracking (SRC) test conducted on a real bilayer asphalt beam sample can be predicted well by modeling the beam layers as a heterogeneous two-phase mixture. K E Y W O R D Saggregate generation and packing algorithms, bottom-up crack, finite element method, fracture parameters, reflective cracking trajectory, two-phase heterogeneous asphalt modeling

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Section: Introductionmentioning

confidence: 99%