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   Articles with "quasi brittle" as a keyword



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Quasi-brittle damage modeling based on incremental energy relaxation combined with a viscous-type regularization

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recommendations! Published in 2018 at "Continuum Mechanics and Thermodynamics"

DOI: 10.1007/s00161-018-0669-z

Abstract: AbstractThis paper deals with a constitutive model suitable for the analysis of quasi-brittle damage in structures. The model is based on incremental energy relaxation combined with a viscous-type regularization. A similar approach—which also represents the… read more here.

Keywords: energy relaxation; incremental energy; quasi brittle; model ... See more keywords
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An SBFEM-Based Model for Hydraulic Fracturing in Quasi-Brittle Materials

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recommendations! Published in 2018 at "Acta Mechanica Solida Sinica"

DOI: 10.1007/s10338-018-0029-3

Abstract: A numerical model based on the scaled boundary finite element method is developed to simulate the hydraulic fracturing in concrete-like quasi-brittle materials using cohesive interface elements. The shadow domain method developed previously (Yang and Deeks… read more here.

Keywords: sbfem based; quasi brittle; brittle materials; hydraulic fracturing ... See more keywords
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A Comparative Review of XFEM, Mixed FEM and Phase-Field Models for Quasi-brittle Cracking

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recommendations! Published in 2021 at "Archives of Computational Methods in Engineering"

DOI: 10.1007/s11831-021-09604-8

Abstract: In this work, a critical comparison between three different numerical approaches for the computational modelling of quasi-brittle structural failure is presented. Among the many finite element approaches devised to solve the problem, both using continuous… read more here.

Keywords: xfem mixed; field models; phase field; quasi brittle ... See more keywords
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Cohesionless crack at peak load in a quasi-brittle material

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recommendations! Published in 2017 at "Engineering Fracture Mechanics"

DOI: 10.1016/j.engfracmech.2017.05.012

Abstract: Abstract A three point bending fracture test was performed on a typical quasi-brittle material (Berea sandstone). The loading was continued into the post-peak region where crack growth was visible along the center line of the… read more here.

Keywords: quasi brittle; peak load; brittle material; cohesionless crack ... See more keywords
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A rate-dependent phase-field framework for the dynamic failure of quasi-brittle materials

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recommendations! Published in 2021 at "Engineering Fracture Mechanics"

DOI: 10.1016/j.engfracmech.2021.107847

Abstract: Abstract In recent years, phase-field theory has become an efficient approach for predicting damage and fracture of engineering materials. However, the rate-dependence of quasi-brittle materials is not considered in most exiting models. To address this… read more here.

Keywords: phase field; quasi brittle; dynamic failure;
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A multi-mechanism constitutive model for the dynamic failure of quasi-brittle materials. Part II: Integrative model

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recommendations! Published in 2019 at "Journal of the Mechanics and Physics of Solids"

DOI: 10.1016/j.jmps.2019.06.015

Abstract: Abstract In Part I, we established a model for amorphization during the failure of quasi-brittle materials. In this Part II, we present a multi-mechanism physics-based constitutive model which incorporates amorphization, microcracking and granular flow as… read more here.

Keywords: part; failure quasi; model; quasi brittle ... See more keywords
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Scale bridging damage model for quasi-brittle metals informed with crack evolution statistics

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recommendations! Published in 2020 at "Journal of The Mechanics and Physics of Solids"

DOI: 10.1016/j.jmps.2020.103921

Abstract: Abstract Computationally efficient methods for bridging length scales, from highly resolved micro/meso-scale models that can explicitly model crack growth, to macro-scale continuum models that are more suitable for modeling large parts, have been of interest… read more here.

Keywords: quasi brittle; model; damage; high fidelity ... See more keywords
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Damage spreading in quasi-brittle disordered solids: II. What the statistics of precursors teach us about compressive failure

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recommendations! Published in 2022 at "Journal of the Mechanics and Physics of Solids"

DOI: 10.1016/j.jmps.2022.104826

Abstract: We investigate numerically and theoretically the precursory intermittent activity characterizing the preliminary phase of damage accumulation prior to failure of quasi-brittle solids. We use a minimal but thermodynamically consistent model of damage growth and localization… read more here.

Keywords: damage; quasi brittle; failure; compressive failure ... See more keywords
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Micromechanics of rock damage: Advances in the quasi-brittle field

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recommendations! Published in 2017 at "Journal of rock mechanics and geotechnical engineering"

DOI: 10.1016/j.jrmge.2016.11.003

Abstract: Abstract Constitutive models play an essential role in numerical modeling and simulation of nonlinear deformation, progressive damage and failure of rock-like materials and structures. Recent advances in the quasi-brittle field show that upscaling methods by… read more here.

Keywords: micromechanics rock; quasi brittle; brittle field; damage ... See more keywords
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Crack nucleation in brittle and quasi-brittle materials: A peridynamic analysis

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recommendations! Published in 2020 at "Theoretical and Applied Fracture Mechanics"

DOI: 10.1016/j.tafmec.2020.102855

Abstract: Abstract Peridynamic (PD) models of bodies without pre-cracks, based on a single fracture parameter (associated with the critical fracture energy), produce different strengths when different horizon sizes are used to simulate crack nucleation under quasi-static… read more here.

Keywords: crack nucleation; model; fracture; quasi brittle ... See more keywords
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Size effect on quasi-brittle fracture pertinent to microstructure and plastic limit

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recommendations! Published in 2021 at "Theoretical and Applied Fracture Mechanics"

DOI: 10.1016/j.tafmec.2021.102978

Abstract: Abstract Many fracture models have data-fitting parameter(s). In this paper, an explicit probabilistic fracture model was proposed by considering microstructure, plastic limit and size effect. Normal distribution with fixed mean and standard deviation was incorporated… read more here.

Keywords: fracture; quasi brittle; plastic limit; microstructure plastic ... See more keywords