Extended finite element method (XFEM) analysis of fiber reinforced composites for prediction of micro-crack propagation and delaminations in progressive damage: a …

RF Swati, LH Wen, H Elahi, AA Khan, S Shad - Microsystem Technologies, 2019 - Springer
Various methodologies and frameworks have been developed for extended finite element
method (XFEM) to simulate two-dimensional and three-dimensional microcrack initiation …

A micromechanical investigation for the effects of pore size and its distribution on geopolymer foam concrete under uniaxial compression

TT Nguyen, HH Bui, TD Ngo, GD Nguyen… - Engineering Fracture …, 2019 - Elsevier
This study investigates the influences of pore-structure and mortar properties on the fracture
behaviour of geopolymer foamed concrete. The discrete element method (DEM) is utilised to …

Numerical insights into the effect of ITZ and aggregate strength on concrete properties

H Zhao, Z Wu, A Liu, L Zhang - Theoretical and Applied Fracture Mechanics, 2022 - Elsevier
Mechanical properties of concrete are highly dependent on its components. Consequently, a
comprehensive understanding of the effects of aggregate and interfacial transition zone on …

DEM analysis on the role of aggregates on concrete strength

P Wang, N Gao, K Ji, L Stewart, C Arson - Computers and Geotechnics, 2020 - Elsevier
This study aims to understand the micro-mechanisms that drive fracture propagation in
concrete and to assess the roles of the strength of aggregates and of the aggregate/mortar …

Study on creep characteristics and nonlinear fractional-order damage constitutive model of weakly cemented soft rock

W Ru, S Hu, A Zhou, P Luo, H Gong, C Zhang… - Rock Mechanics and …, 2023 - Springer
Weakly cemented soft rock (WCSR) strata are widespread in Western China, and their creep
characteristics with geo-stress change significantly affect coal mine safety production. To …

A numerical approach to investigate the effects of rock texture on the damage and crack propagation of a pre-cracked granite

M Saadat, A Taheri - Computers and Geotechnics, 2019 - Elsevier
A grain-based distinct element model (GBM) is used to investigate the influence of grain size
on the fracturing response of pre-cracked granite. A cohesive model is developed and …

A cohesive viscoelastic-elastoplastic-damage model for DEM and its applications to predict the rate-and time-dependent behaviour of asphalt concretes

NHT Nguyen, HH Bui - International Journal of Plasticity, 2022 - Elsevier
Asphalt concrete is a composite heterogeneous material comprised of aggregates bonded
together by bitumen binder. The mechanical behaviour of this material shows great …

Brittle-ductile failure transition in geomaterials modeled by a modified phase-field method with a varying damage-driving energy coefficient

T You, H Waisman, QZ Zhu - International Journal of Plasticity, 2021 - Elsevier
With elevated confining pressure and low temperatures, geomaterials may exhibit brittle-to-
ductile failure transition due to increased cataclastic flow. In this work, we propose a …

Phase field fracture in elasto-plastic solids: a length-scale insensitive model for quasi-brittle materials

J Fang, C Wu, T Rabczuk, C Wu, G Sun, Q Li - Computational Mechanics, 2020 - Springer
Phase-field methods for fracture have been integrated with plasticity for better describing
constitutive behaviours. In most of the previous phase-field models, however, the length …

Characteristics and failure analysis of a railway tunnel collapse influenced by cavity in phyllite strata

L Chen, ZF Wang, Y Wang, X Bai, J Lai - Engineering Failure Analysis, 2022 - Elsevier
Tunnelling in phyllite strata with cavity is prone to collapse even with reasonable
construction design. Based on a railway tunnel collapse influenced by cavity in phyllite …