Results 31 to 40 of about 167,670,099 (290)

Study of Dynamic Brittle Fracture of Composite Lamina Using a Bond-Based Peridynamic Lattice Model

open access: yesAdvances in Materials Science and Engineering, 2019
We proposed a bond-based peridynamic lattice model for simulating dynamic brittle fracture of 2D composite lamina. Material orthogonal anisotropy was represented by rotating topological lattice structure instead of fiber directions. Analytical derivation
Jushang Guo   +4 more
doaj   +1 more source

Existence of solutions to a regularized model of dynamic fracture [PDF]

open access: yes, 2010
Existence and convergence results are proved for a regularized model of dynamic brittle fracture based on the Ambrosio–Tortorelli approximation. We show that the sequence of solutions to the time-discrete elastodynamics, proposed by Bourdin, Larsen ...
Larsen, CJ   +8 more
core   +1 more source

Fracture mechanisms and failure criteria of adhesive joints and toughened epoxy adhesives [PDF]

open access: yes, 2010
PhDAdhesive bonded applications are used widely in industry because of significant advantages such as uniform stress distribution, and the ability to join different materials.
Xu, Botao
core   +4 more sources

Rapid modeling of space structure of rock mass and the method of equivalent assignment

open access: yesEnergy Science & Engineering, 2019
Accurately grasping the spatial distribution characteristics of fractures is an important basis for computation and analysis of rock engineering. On the basis of field investigation, probability statistics, and numerical simulation, the fast modeling ...
Zhouquan Luo   +5 more
doaj   +1 more source

A new-generation Embedded Discrete Fracture Model calibration workflow applied to the characterization of complex naturally fracture reservoir

open access: yesPetroleum Research, 2022
Characterizing natural fractures has a decisive effect on production forecasts in fractured oil and gas reservoirs. Discrete Fracture Networks (DFN) constitutes the main modeling framework for fractured geosystems.
Hongbing Xie   +6 more
doaj   +1 more source

Numerical model of fracture growth in hydraulic re-fracturing

open access: yesFrattura ed Integrità Strutturale, 2019
Simulation of fracture propagation with FEM method generates the need of re-meshing to provide more accurate results. This raises a question of determining the direction and criterion of mesh modification. In the case of general-purpose CAE-packages, we deal with a stationary mesh, and the fracture path is usually represented as a chain of elements ...
Smetannikov, Oleg Yurievich   +3 more
openaire   +5 more sources

Comparison Between Numerical Analysis and Actual Results for a Pull-Out Test

open access: yesEngineering Transactions, 2019
The paper describes a computer analysis of the pull-out test used to determine the force needed to pull out a fragment of rock and the shape of this broken fragment. The analyzed material is sandstone and porphyry.
Jakub GONTARZ   +4 more
doaj   +1 more source

Hybrid Analytical and Numerical Approach for Modeling Fluid Flow in Simplified Three-Dimensional Fracture Networks

open access: yesGeofluids, 2020
Modeling fluid flow in three-dimensional fracture networks is required in a wide variety of applications related to fractured rocks. Numerical approaches developed for this purpose rely on either simplified representations of the physics of the ...
D. Roubinet   +4 more
doaj   +1 more source

Development of an improved three-dimensional rough discrete fracture network model: Method and application

open access: yesInternational Journal of Mining Science and Technology, 2023
Structure plane is one of the important factors affecting the stability and failure mode of rock mass engineering. Rock mass structure characterization is the basic work of rock mechanics research and the important content of numerical simulation.
Peitao Wang   +5 more
doaj   +1 more source

Deep Graph Learning-Based Surrogate Model for Inverse Modeling of Fractured Reservoirs

open access: yesMathematics
Inverse modeling can estimate uncertain parameters in subsurface reservoirs and provide reliable numerical models for reservoir development and management. The traditional simulation-based inversion method usually requires numerous numerical simulations,
Xiaopeng Ma   +4 more
doaj   +1 more source

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