Stress Intensity Factors at the Tip of a Surface Initiated Crack Caused by Different Contact Pressure Distributions

Casey, Dermot B.; Collop, Andy; Grenfell, James; Airey, Gordon

doi:10.1016/j.sbspro.2012.06.1051

Cited by 9 publications

(2 citation statements)

References 10 publications

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“…It is shown that these non-uniform contact pressures are of importance to the behaviour of pavements especially at the surface and near surface [7][8][9][10][11]. It has been shown that there are significant differences to surface cracking potential caused by non-uniform contact pressure [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Relative Pavement Performance for Dual and Wide-Based Tire Assemblies Using a Finite Element Method

Casey

Airey

Grenfell

2017

Journal of Testing and Evaluation

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There is a need to assess the realistic tyre contact pressure created by a tyre in contact with a pavement. The contact pressure is a function of tyre type, axle loading and tyre inflation pressure (TiP). The research carried out considered dual tyre and wide-based tyre assemblies across a range of axle loading and TiP. These contact pressures were incorporated into a finite element package (CAPA-3D) and modelled on a simple pavement structure. The strains from this modelling were sorted to produce key strains associated with the mechanisms of surface distress, near surface distress, deep asphalt distress and the subgrade. The main distress mechanisms being top down cracking, asphalt cracking/rutting, bottom-up fatigue cracking and subgrade rutting. This gave a method to fairly compare the dual and wide-based tyre assemblies with the same axle loading and TiP. The analysis gave interesting results for the different distress mechanisms of the pavement. The wide-based tyre gives consistently higher shear strains for all the areas of distress investigated. There is great variation in surface and near surface shear strains due to the different combinations of axle loading and TiP. It is clear that the wide-based tyre is a more damaging tyre for all combinations of TiP and axle loading. It is also apparent that how these factors interact has a great influence on the damaging potential of a tyre.

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Section: Introductionmentioning

confidence: 99%

Relative Pavement Performance for Dual and Wide-Based Tire Assemblies Using a Finite Element Method

Casey

Airey

Grenfell

2017

Journal of Testing and Evaluation

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“…Casey et al (2012) investigated the stress intensity factors of mode one and mode two cracking at the tip of a short crack and their influence on the continued propagation of cracks further into the pavement. Karlaftis and Badr (2015) proposed a methodological approach to represent the actual relationships between the probability of alligator crack initiation and various design, traffic and weather factors as well as different rehabilitation strategies.…”

Section: Introductionmentioning

confidence: 99%

Analytical method for evaluating top-down cracking in pavements

Gao¹

2016

Proceedings of the Institution of Civil Engineers - Transport

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Top-down cracking is a type of cracking that significantly impacts traffic safety and comfort and reduces a pavement's service life. Here, a cement concrete pavement containing a top-down crack is investigated under traffic load using a theoretical analysis method. In order to simplify the problem, the cement concrete pavement is modelled as an elastic plate on a Winkler foundation. Fourier transform methods and a dislocation density function are used to determine the stress intensity factors of a crack tip. A parametric study is conducted to isolate the effects of crack length, pavement stiffness and distance between the crack and the edge of a vehicle wheel. The results of the study show that crack length and load position significantly affect the stress intensity factors. However, stress intensity factors are less affected by the elastic modulus of the pavement material.

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3D Longitudinal and Transverse Cracking and the Influence of Non‐Uniform Contact Pressure on the Stress Intensity Factors of these Cracks

Casey

Grenfell

Airey

2016

Materials and Infrastructures 1

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Stress Intensity Factors at the Tip of a Surface Initiated Crack Caused by Different Contact Pressure Distributions

Cited by 9 publications

References 10 publications

Relative Pavement Performance for Dual and Wide-Based Tire Assemblies Using a Finite Element Method

Relative Pavement Performance for Dual and Wide-Based Tire Assemblies Using a Finite Element Method

Analytical method for evaluating top-down cracking in pavements

3D Longitudinal and Transverse Cracking and the Influence of Non‐Uniform Contact Pressure on the Stress Intensity Factors of these Cracks

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