Shock responses of nanoporous aluminum by molecular dynamics simulations
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In this paper, a continuum wave reflection theory and a resolved shear stress model were proposed to explain the distribution of dislocation nucleation sites in the low latitude region near the equator of the spherical void surfaces.About:
This article is published in International Journal of Plasticity.The article was published on 2017-10-01 and is currently open access. It has received 71 citations till now. The article focuses on the topics: Shock wave & Nucleation.read more
Citations
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Shock response of nanoporous magnesium by molecular dynamics simulations
TL;DR: In this article, two typical mechanisms of void collapse under c-axis loading are revealed: the plasticity mechanism and the internal jetting mechanism, which dominate under weak shock intensity, leading to transverse collapse of voids.
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Shock-induced plasticity in semi-coherent {111} Cu-Ni multilayers
TL;DR: In this paper, the authors present a systematic investigation on shock-induced plasticity in semi-coherent Cu-Ni multilayers using atomistic simulations, dislocation dynamics modeling and continuum elastic-plastic stress wave theory.
Journal ArticleDOI
Evolution of pore ensemble in solid and molten aluminum under dynamic tensile fracture: Molecular dynamics simulations and mechanical models
TL;DR: In this article, the pore ensemble evolution in both liquid and elastic-plastic materials is modeled using the Rayleigh-Plesset equation, where the size variation part of the model describes the random nucleation of pores in the sample bulk.
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Crystal plasticity based investigation of micro-void evolution under multi-axial loading conditions
TL;DR: In this paper, the effects of stress state and crystallographic orientation of the principal stress axes on the growth behavior of micro-voids embedded in an aluminium alloy single crystal were investigated, where a physics-based crystal plasticity constitutive model was used to describe crystallographic slip around the voids.
Journal ArticleDOI
Molecular dynamics simulations on shock response and spalling behaviors of semi-coherent {111} Cu-Al multilayers
TL;DR: In this paper, the impact of interfaces on the spallation behavior of semi-coherent {111} Cu-Al multilayer is investigated by molecular dynamics simulations, and it is found that the resistance for dislocations to transmit through interfaces is determined by the coherency stresses, Koehler stresses and misfit dislocation at the interface.
References
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Fast parallel algorithms for short-range molecular dynamics
TL;DR: In this article, three parallel algorithms for classical molecular dynamics are presented, which can be implemented on any distributed-memory parallel machine which allows for message-passing of data between independently executing processors.
Fast parallel algorithms for short-range molecular dynamics
TL;DR: Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems.
Book
Theory of Dislocations
John Price Hirth,Jens Lothe +1 more
TL;DR: Dislocations in Isotropic Continua: Effects of Crystal Structure on Dislocations and Dislocation-Point-Defect Interactions at Finite temperatures.
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Evolution of nanoporosity in dealloying
Jonah Erlebacher,Jonah Erlebacher,Michael J. Aziz,Alain Karma,Nikolay Dimitrov,Karl Sieradzki +5 more
TL;DR: It is demonstrated that nanoporosity in metals is due to an intrinsic dynamical pattern formation process, and that chemically tailored nanoporous gold made by dealloying Ag-Au should be suitable for sensor applications, particularly in a biomaterials context.