Results 271 to 280 of about 14,215 (312)
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Dynamic Simulation Of Crack Propagation With Dislocation Emission And Migration
MRS Proceedings, 1995AbstractWe present a simulation procedure for fracture that self-consistently accounts for dislocation emission, dislocation migration and crack growth. We find that the dislocation microstructure in front of the crack tip is highly organized and shows a complex temporal-spatial evolution.
N. Zacharopoulos +2 more
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Numerical Simulation of Crack Propagation in Shells
1990Numerical simulations of general crack propagation in arbitrary shells are accomplished by the use of automatic finite element remeshing and interactive computer graphics techniques. As part of each stage of this simulation, the curvature as well as the direction of crack propagation are calculated from the rate of energy release rate and the energy ...
Sheng-Chung Lin, John F. Abel
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Simulation of dynamic crack propagation under quasi-static loading
Doklady Physics, 2014Simulation of dynamic crack growth under quasistatic loading was performed using finite element method with embedded incubation time fracture criterion [. Experimental data, used for comparison was taken from [. ANSYS finite element software package was used in order to receive FEM solutions.
N. A. Kazarinov +2 more
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Simulation of Microstructurally Controlled Short Crack Propagation
steel research international, 2003A model for the simulation of stage I fatigue crack propagation is presented. The model considers the barrier effect of grain boundaries and phase boundaries on short crack propagation rate and the crack path deflection due to the microstructure. The plastic zones in front of the crack tip are modelled as yield strips.
Boris Künkler +5 more
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Computer simulation of crack propagation in composite materials
Engineering Fracture Mechanics, 1989Abstract Lange and Evans have shown that the “line tension effect” caused by second phase dispersions in a brittle matrix usually increases its strength and toughness. In this paper crack bowing between particles and fibres in a brittle matrix are observed by computer simulation.
B.Parga Landa, F.Hernandez Olivares
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The Use of Retardation Models in Crack Propagation Simulation
SAE Technical Paper Series, 2008<div class="htmlview paragraph">The objective of this paper is to provide a review of retardation models for constant and variable amplitude spectrum loading in 2D constrained small scale yielding. The models considered use a numerical 2D finite element method to determine crack opening and closing stress intensity factors. The correlation of the
Luiz Carlos H. Ricardo +2 more
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Computer simulation of crack propagation: lattice trapping
Journal of Physics C: Solid State Physics, 1981Lattice trapping is an unexpected result obtained in a number of atomistic treatments of crack propagation. Molecular dynamic simulation was used in the present investigation to study crack behaviour. Using a large two-dimensional sample of about 11000 atoms and a relatively long-range Lennard-Jones potential, lattice trapping is found to be a ...
A Paskin, D K Som, G J Dienes
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SIMULATION OF CRACK PROPAGATION IN FILLED ELASTOMERS
Nanoscience and Technology: An International JournalThe results of computer simulation of the crack growth in an elastomeric nanocomposite and its interaction with microscopic strands that can occur between adjacent closely spaced filler particles during material loading are presented. The hypothesis that elastomeric material is able to withstand significantly greater loads under uniaxial tension ...
Alexander Sokolov +2 more
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Quasicontinuum simulation of crack propagation in bcc-Fe
Materials Science and Engineering: A, 2011Abstract We have investigated fracture in bcc-Fe through multiscale simulations. The quasicontinuum (QC) method with an embedded atom method (EAM) interatomic potential is applied. The analyses have been carried out assuming different crystallographic orientations and different T-stress under Mode I loading.
Inga Ringdalen Vatne +3 more
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Molecular dynamics simulation of propagating cracks
Scripta Metallurgica, 1982Steady state crack propagation is investigated numerically using a model consisting of 236 free atoms in two (010) planes of bcc alpha iron. The continuum region is modeled using the finite element method with 175 nodes and 288 elements. The model shows clear (010) plane fracture to the edge of the discrete region at moderate loads.
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