Roughness of fracture surfaces in numerical models and laboratory experiments [PDF]
Solid Earth, 2021 Abstract. We investigate the influence of stress conditions during fracture formation on the geometry and roughness of fracture surfaces. Rough fracture surfaces have been generated in numerical simulations of triaxial deformation experiments using the discrete element method and in a small number of laboratory experiments on limestone and sandstone ...
S. Abe, H. Deckert
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A Fracture Mechanics-based Method for Prediction of Cracking of Circular and Elliptical Concrete Rings under Restrained Shrinkage [PDF]
, 2014 This article has been made available through the Brunel Open Access Publishing Fund.A new experimental method, utilizing elliptical ring specimens, is developed for assessing the likelihood of cracking and cracking age of concrete subject to restrained ...
Dong, W +5 more
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A PDE-constrained optimization formulation for discrete fracture network flows [PDF]
, 2013 We investigate a new numerical approach for the computation of the 3D flow in a discrete fracture network that does not require a conforming discretization of partial differential equations on complex 3D systems of planar fractures.
Pieraccini, Sandra +2 more
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Numerical modelling of hydraulic fracturing [PDF]
, 2014 In this paper we present a numerical model for hydraulic fracturing purposes. The rock formation is modelled as a poroelastic material based on Biot’s Theory. A fracture is represented in a discrete manner using the eXtended Finite Element Method (X-FEM). The fluid flow is governed by a local mass balance.
Remij, E.W. +3 more
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A thermodynamically consistent derivation of a frictional-damage cohesive-zone model with different mode i and mode II fracture energies [PDF]
, 2015 The present paper deals with the derivation of an interface model characterized by macroscopic fracture energies which are different in modes I and II, the macroscopic fracture energy being the total energy dissipated per unit of fracture area.
Serpieri, R +9 more
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Numerical simulation of wave propagation in 2-D fractured media : scattering attenuation at different stages of the growth of a fracture population [PDF]
, 2007 In this paper, we systematically examine the multiple scattering process of seismic waves at consecutive stages of the evolution of 2-D fracture population. Synthetic seismograms are computed using the pseudo-spectral method for elastic wave propagation,
Main, I.G. +7 more
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Experimental and numerical analysis of micromechanical damage in the punching process for High-Strength Low-Alloy steels [PDF]
, 2014 Sequential sheet metal forming processes can result in the accumulation of work hardening and damage effects in the workpiece material. The mechanical strength of the final component depends on the “evolution” of these two characteristics in the ...
GERMAIN, Guénaël +3 more
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Fracture Mechanics Investigation of Structures with Defects [PDF]
, 2013 Fracture mechanics plays an important role in the material science, structure design and industrial production due to the failure of materials and structures are paid high attention in human activities.
Li, Yong <1985>
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Poromechanical Modeling and Numerical Simulation of Hydraulic Fracture Propagation
ACS Omega, 2022 Hydraulic fracturing (HF) is an important technique for enhancing the permeability of petroleum and gas reservoirs. To understand the coupling response mechanism of fluid pressure and in situ stress during the expansion of hydraulic fractures-based on the theory of the fluid flow of seepage porous media and damage mechanics-a poromechanical model of ...
Xinsheng Zhang +3 more
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Energy Exploration & Exploitation, 2021 Shale oil reservoirs are usually developed by horizontal wells completed with multi-stage hydraulic fractures. The fracture interference between clusters in a single stage and between consecutive stages has an impact on the stimulation quality in terms ...
Ang Chen +5 more
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