Journal ArticleDOI
Tension Crack Development in Soils
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TLDR
In this article, a model for finite-element modeling of tension crack propagation in soils is proposed, based on the splitting of a single node into two distinct nodes in the wake of an advancing crack tip to replicate separation of material on either side of the crack.Abstract:
A model is proposed for finite‐element modeling of tension crack propagation in soils. The essential features of this model are the splitting of a single node into two distinct nodes in the wake of an advancing crack tip to replicate separation of material on either side of the crack, and the use of a fracture mechanics criterion to predict crack propagation. The material parameter employed in this criterion, the critical energy release rate, is determined experimentally and shown to be reasonably constant over a range of crack lengths, thereby supporting the adoption of this parameter as a material constant for tension cracking in soils. The model is then applied to two classes of problems in which tension cracking is known to exercise significant influence, a stiff embankment on soft soil and an excavated slope. For both problems, stable and reasonable solutions are obtained, suggesting that fracture mechanics offers a feasible approach to the analysis of tension cracking in soils.read more
Citations
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Journal ArticleDOI
A idealized framework for the analysis of cohesive soils undergoing desiccation
J M Konrad,R Ayad +1 more
TL;DR: In this paper, a model for crack formation in clays during drying was presented, and the onset of cracking was modelled, and crack depth was approximated with linear elastic fracture mechanics in mode I, i.e., opening of the crack.
Journal ArticleDOI
Study of desiccation crack initiation and development at ground surface
Jinhui Li,Jinhui Li,Li Min Zhang +2 more
TL;DR: In this article, a field study was conducted to investigate the mechanisms of initiation and development of desiccation cracks on two soils and the results showed that cracks developed in three stages: initial stage, primary stage, and steady state stage.
Journal ArticleDOI
Experimental study on fracture toughness and tensile strength of a clay
TL;DR: In this paper, an empirical linear relationship between the fracture toughness and tensile strength of the tested clay, which is K IC ǫ = 0.3546 σ t, was suggested.
Journal ArticleDOI
Experimental evidence of size effect in soil cracking
C PratPere,LedesmaAlberto +1 more
TL;DR: In this article, an experimental study on the formation of crack patterns during drying of a soil paste is presented, and the objective is to ascertain whether fracture mechanics plays a significant role in this process.
Journal ArticleDOI
Evolution of mud-crack patterns during repeated drying cycles
TL;DR: In this paper, the authors used time-lapse photography to show how a desiccation crack pattern changes from being dominated by 90° joint angles, to 120° joint angle.
References
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Journal ArticleDOI
On the Crack Extension in Plates Under Plane Loading and Transverse Shear
Fazil Erdogan,G.C. Sih +1 more
Journal ArticleDOI
Quasi-static crack propagation
C. Gurney,J. Hunt +1 more
TL;DR: In this paper, a general theory of quasi-static crack propagation is formulated, subject to chosen constraints, and general stability criteria under monotonically increasing load and displacement are presented.
Journal ArticleDOI
Stress Analysis of Rock as a ‘No Tension’ Material
TL;DR: In this article, an iterative "stress transfer" method using a finite element formulation was used to obtain a lower bound on the stability of a dam, a tunnel and an underground power station.
Journal ArticleDOI
Flexibility of Clay and Cracking of Earth Dams
TL;DR: In this paper, an approximate theory is formulated to calculate the critical tensile strains in an earth dam that result from differential settlements along the axis of the dam, and laboratory apparatus and procedures are developed to estimate the limiting tensile strain at which compacted clay will crack.
Journal ArticleDOI
Behavior of Compacted Soil in Tension
TL;DR: In this article, a study of a typical core material is performed to investigate the various factors influencing the tensile strength and stress-strain relationships in tension, including water content, compactive effort, rate of loading, and change of plasticity.