Crack band model of fracture in irregular lattices

Berton, Stefano; Bolander, John E.

doi:10.1016/j.cma.2005.04.020

Cited by 81 publications

(61 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This representation of fracturing within the RBSN is energy conserving and mesh insensitive for predominantly tensile stress fields, i.e., fracture propagates through the random mesh with uniform, controllable energy consumption, as if using a straight-line discretization of the crack trajectory (Bolander and Sukumar, 2005;Berton and Bolander, 2006). As shown in Fig.…”

Section: Fracture Modelmentioning

confidence: 99%

Hydro-mechanical model for wetting/drying and fracture development in geomaterials

Asahina

Houseworth

Birkhölzer

et al. 2014

Computers & Geosciences

View full text Add to dashboard Cite

Abstract:This paper presents a modeling approach for studying hydro-mechanical coupled processes, including fracture development, within geological formations. This is accomplished through the novel linking of two codes: TOUGH2, which is a widely used simulator of subsurface multiphase flow based on the finite volume method; and an implementation of the Rigid-BodySpring Network (RBSN) method, which provides a discrete (lattice) representation of material elasticity and fracture development. The modeling approach is facilitated by a Voronoi-based discretization technique, capable of representing discrete fracture networks. The TOUGH-RBSN simulator is intended to predict fracture evolution, as well as mass transport through permeable media, under dynamically changing hydrologic and mechanical conditions. Numerical results are compared with those of two independent studies involving hydro-mechanical coupling: (1) numerical modeling of swelling stress development in bentonite; and (2) experimental study of desiccation cracking in a mining waste. The comparisons show good agreement with respect to moisture content, stress development with changes in pore pressure, and time to crack initiation.The observed relationship between material thickness and crack patterns (e.g., mean spacing of cracks) is captured by the proposed modeling approach.

show abstract

Section: Fracture Modelmentioning

confidence: 99%

Hydro-mechanical model for wetting/drying and fracture development in geomaterials

Asahina

Houseworth

Birkhölzer

et al. 2014

Computers & Geosciences

View full text Add to dashboard Cite

show abstract

“…The RBSN models have been applied to simulate fracture process predominantly subjected to tensile loading (Berton and Bolander, 2006). In general, the global loading direction is mostly skewed to the local element axes; therefore, all the normal and tangential components of spring forces are activated in the direction of the element axes.…”

Section: Resultant Stress Measuresmentioning

confidence: 99%

Investigation of Coupled Processes and Impact of High Temperature Limits in Argillite Rock

Zheng¹,

Rutqvist²,

Steefel³

et al. 2014

View full text Add to dashboard Cite

“…With decreasing lattice size, the energy dissipated for crack creation approaches zero, which contradicts the reality. To address this problem, some scholars [17,[23][24][25][26] have related the bond stress-strain relationship to the macro fracture energy based on the conception of crack band [27] while others [23,28] have developed a bond rupture criterion with the consideration of fracture energy. In contrast to the incorporation of fracture energy, it has been reported that the mesh size dependency also can be relieved through consideration of statistical distributions of lattice beam strengths in [29,30].…”

Section: Introductionmentioning

confidence: 99%

A hyperelastic-bilinear potential for lattice model with fracture energy conservation

Zhang

Ding

Ghassemi

et al. 2015

Engineering Fracture Mechanics

View full text Add to dashboard Cite

a b s t r a c tA hyperelastic-bilinear potential (HBP) is proposed for lattice model to preserve the fracture energy in fracture simulation. This potential inherits the essence of hyperelastic interatomic potential in that it can capture the hyperelastic behaviors of material at the crack tip which plays a critically important role in dynamic fracture. Moreover, the potential retains the essence of the bilinear cohesive law in that it can preserve the fracture energy by setting a limit on the bond strain. With this HBP, the lattice size sensitivity is eliminated to a great extent and the dynamic fracture can be more accurately simulated.

show abstract

Crack band model of fracture in irregular lattices

Cited by 81 publications

References 14 publications

Hydro-mechanical model for wetting/drying and fracture development in geomaterials

Hydro-mechanical model for wetting/drying and fracture development in geomaterials

Investigation of Coupled Processes and Impact of High Temperature Limits in Argillite Rock

A hyperelastic-bilinear potential for lattice model with fracture energy conservation

Contact Info

Product

Resources

About