Nucleation of fracture: The first-octant evidence against classical variational phase-field models DOI
Farhad Kamarei, John E. Dolbow, Oscar Lopez‐Pamies

et al.

Journal of Applied Mechanics, Journal Year: 2024, Volume and Issue: 92(1)

Published: Nov. 14, 2024

Abstract As a companion work to [1], this article presents series of simple formulae and explicit results that illustrate highlight why classical variational phase-field models cannot possibly predict fracture nucleation in elastic brittle materials. The focus is on “tension-dominated” problems where all principal stresses are nonnegative, is, taking place entirely within the first octant space stresses.

Language: Английский

Variational Phase‐Field Fracture Approach in Reactive Porous Media DOI Creative Commons
Mostafa Mollaali, Keita Yoshioka, Renchao Lu

et al.

International Journal for Numerical Methods in Engineering, Journal Year: 2025, Volume and Issue: 126(1)

Published: Jan. 3, 2025

ABSTRACT We present a comprehensive model to simulate fracture nucleation and propagation in porous media, incorporating chemical reactions. This integrates three main processes: fluid flow reactive transport, the mechanical deformation of fractured media using variational phase‐field approach. To account for reactions, we use geochemical package PHREEQC, coupled with finite‐element transport solver (OpenGeoSys), reactions both thermodynamic equilibrium kinetically, considering changes porosity. represent damage, introduce variable that ranges from intact material fully damaged material. accounts porosity as result separate damage represented by variable. test our through various examples showcase its ability capture driven Our is implemented within open‐source finite element framework OpenGeoSys.

Language: Английский

Citations

0
An adaptive mesh refinement algorithm for stress-based phase field fracture models for heterogeneous media: Application using FEniCS to ice-rock cliff failures DOI Creative Commons

Duc Tien Nguyen,

Abhinav Gupta, Ravindra Duddu

et al.

Finite Elements in Analysis and Design, Journal Year: 2025, Volume and Issue: 244, P. 104311 - 104311

Published: Jan. 14, 2025

Language: Английский

Citations

0
Phase field approach for managing multi-fragment interactions in load-bearing fractured media DOI Creative Commons
A. Chao Correas,

Danilo Acquesta,

Mauro Corrado

et al.

International Journal of Fracture, Journal Year: 2025, Volume and Issue: 250(1), P. 1 - 17

Published: Feb. 24, 2025

Abstract This work introduces a novel approach for characterizing the residual load bearing capacity of fractured components based on Phase Field fracture model. The underlying idea involves exploiting this well-established framework fracturing materials and applying it to mechanically loaded domains in which has already occurred. Hence, continuous phase field here portrays smeared representation known crack patterns, unilateral contact interactions between lips are enforced through suitable strain energy decomposition. allows theoretically robust implicit treatment originally discontinuous problem while remaining continuum framework. As such, proposed avoids numerically challenging definition management conventional pairs, thus proving be especially promising its application with multiple fragments. Besides presenting theoretical foundation algorithmic convenience approach, accuracy representativeness proven against predictions numerical results from Finite Element models featuring interactions.

Language: Английский

Citations

0
A comparative study of the Representative Crack Element method and the Star-convex approach within phase-field fracture modeling DOI Creative Commons
Dong Zhao, Bin Li, Johannes Storm

et al.

Engineering Fracture Mechanics, Journal Year: 2025, Volume and Issue: unknown, P. 111041 - 111041

Published: March 1, 2025

Language: Английский

Citations

0
Stress-constrained versus fracture-based topology optimization: A comparative study DOI Creative Commons
Yingqi Jia, Rahul Dev Kundu, Xiaojia Shelly Zhang

et al.

Computer Methods in Applied Mechanics and Engineering, Journal Year: 2025, Volume and Issue: 441, P. 117949 - 117949

Published: April 9, 2025

Language: Английский

Citations

0
On modeling fracture of soft polymers DOI Creative Commons
Aditya Konale, Vikas Srivastava

Mechanics of Materials, Journal Year: 2025, Volume and Issue: unknown, P. 105346 - 105346

Published: April 1, 2025

Language: Английский

Citations

0
Nucleation of fracture: The first-octant evidence against classical variational phase-field models DOI
Farhad Kamarei, John E. Dolbow, Oscar Lopez‐Pamies

et al.

Journal of Applied Mechanics, Journal Year: 2024, Volume and Issue: 92(1)

Published: Nov. 14, 2024

Abstract As a companion work to [1], this article presents series of simple formulae and explicit results that illustrate highlight why classical variational phase-field models cannot possibly predict fracture nucleation in elastic brittle materials. The focus is on “tension-dominated” problems where all principal stresses are nonnegative, is, taking place entirely within the first octant space stresses.

Language: Английский

Citations

0