Phase-field fracture modelling of crack nucleation and propagation in porous rock

被引：46

作者：

Spetz, Alex ^{[1
]}

Denzer, Ralf ^{[2
]}

Tudisco, Erika ^{[1
]}

Dahlblom, Ola ^{[1
]}

机构：

[1] Lund Univ, Fac Engn, Dept Construct Sci, Geotech Engn, POB 118, S-22100 Lund, Sweden

[2] Lund Univ, Fac Engn, Dept Construct Sci, Solid Mech, POB 118, S-22100 Lund, Sweden

来源：

INTERNATIONAL JOURNAL OF FRACTURE | 2020年 / 224卷 / 01期

关键词：

Phase-field fracture model; Porous rock; Crack nucleation and propagation; Meuwissen sample; FINITE-ELEMENT-METHOD; BRITTLE-FRACTURE; FORMULATION;

D O I：

10.1007/s10704-020-00444-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, we suggest a modified phase-field model for simulating the evolution of mixed mode fractures and compressive driven fractures in porous artificial rocks and Neapolitan Fine Grained Tuff. The numerical model has been calibrated using experimental observations of rock samples with a single saw cut under uniaxial plane strain compression. For the purpose of validation, results from the numerical model are compared to Meuwissen samples with different angles of rock bridge inclination subjected to uni-axial compression. The simulated results are compared to experimental data, both qualitatively and quantitatively. It is shown that the proposed model is able to capture the emergence of shear cracks between the notches observed in the Neapolitan Fine Grained Tuff samples as well as the propagation pattern of cracks driven by compressive stresses observed in the artificial rock samples. Additionally, the typical types of complex crack patterns observed in experimental tests are successfully reproduced, as well as the critical loads.

引用

页码：31 / 46

页数：16

共 30 条

[1] A review on phase-field models of brittle fracture and a new fast hybrid formulation [J].

Ambati, Marreddy ;

Gerasimov, Tymofiy ;

De Lorenzis, Laura .

COMPUTATIONAL MECHANICS, 2015, 55 (02) :383-405

[2] Regularized formulation of the variational brittle fracture with unilateral contact: Numerical experiments [J].

Amor, Hanen ;

Marigo, Jean-Jacques ;

Maurini, Corrado .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2009, 57 (08) :1209-1229

[3]

[Anonymous], 2011, The invasive potential of parthenium weed (Parthenium hysterophorus L.) in Australia

[4] A phase-field description of dynamic brittle fracture [J].

Borden, Michael J. ;

Verhoosel, Clemens V. ;

Scott, Michael A. ;

Hughes, Thomas J. R. ;

Landis, Chad M. .

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 2012, 217 :77-95

[5] Numerical experiments in revisited brittle fracture [J].

Bourdin, B ;

Francfort, GA ;

Marigo, JJ .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2000, 48 (04) :797-826

[6]

Bourdin B, 2007, INTERFACE FREE BOUND, V9, P411

[7] Dynamic crack propagation in wood fibre composites analysed by high speed photography and a dynamic phase field model [J].

Carlsson, Jenny ;

Isaksson, Per .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2018, 144 :78-85

[8] Coupled phase-field and plasticity modeling of geological materials: From brittle fracture to ductile flow [J].

Choo, Jinhyun ;

Sun, WaiChing .

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 2018, 330 :1-32

[9]

Cottrell J A, 2009, Isogeometric analysis: Toward integration of CAD and FEA

[10] Revisiting brittle fracture as an energy minimization problem [J].

Francfort, GA ;

Marigo, JJ .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1998, 46 (08) :1319-1342

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