Zobrazeno 1 - 10
of 14
pro vyhledávání: '"E. T. Seppälä"'
Publikováno v:
Journal of Computer-Aided Materials Design. 14:425-434
Simulation of ductile fracture at the atomic scale reveals many aspects of the fracture process including specific mechanisms associated with void nucleation and growth as a precursor to fracture and the plastic deformation of the material surroundin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b3f9c60b708bf411d0a0ba76ffa837d
https://doi.org/10.1007/s10820-007-9054-0
https://doi.org/10.1007/s10820-007-9054-0
Publikováno v:
The European Physical Journal B. 19:259-263
We study the statistics of crack pinning in two dimensions by experiments and simulations of directed polymers in random media. Mode I tensile tests on paper samples show a delocalization phenomenon as the notch length is varied if the fraction of cr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0e0681398c38733cb399291903794fb
https://doi.org/10.1007/s100510170334
https://doi.org/10.1007/s100510170334
Publikováno v:
Physical Review E. 61:6312-6319
The roughness properties of two-dimensional fracture surfaces as created by the slow failure of random fuse networks are considered and compared to yield surfaces of perfect plasticity with similar disorder. By studying systems up to a linear size L=
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5301230cc810d194338163460c19db21
https://doi.org/10.1103/physreve.61.6312
https://doi.org/10.1103/physreve.61.6312
Publikováno v:
Physical Review E. 58:R5217-R5220
Ground states and domain walls are investigated with exact combinatorial optimization in two-dimensional random field Ising magnets. The ground states break into domains above a length scale that depends exponentially on the random field strength squ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a00eefef737c6841fc3bc723290e636b
https://doi.org/10.1103/physreve.58.r5217
https://doi.org/10.1103/physreve.58.r5217
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 23(11)
The electronic transport properties of crossed carbon nanotube junctions are investigated using ab initio methods. The optimal atomic structures and the intertube distances of the junctions are obtained using van der Waals corrected density functiona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f30f706d8816361bba6492b8cff8edd
https://pubmed.ncbi.nlm.nih.gov/21358037
https://pubmed.ncbi.nlm.nih.gov/21358037
Molecular dynamics simulations in three-dimensional copper have been performed to quantify the void coalescence process leading to fracture. The correlated growth of the voids during their linking is investigated both in terms of the onset of coalesc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00d59c9af6aaad4dc26229bec9991531
Publikováno v:
Physical Review E. 63
We study at T=0 the minimum energy of a domain wall and its gap to the first excited state concentrating on two-dimensional random-bond Ising magnets. The average gap scales as $\Delta E_1 \sim L^\theta f(N_z)$, where $f(y) \sim [\ln y]^{-1/2}$, $\th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da9ef15842a8af49069f1c4de1f2537c
https://doi.org/10.1103/physreve.63.066110
https://doi.org/10.1103/physreve.63.066110
Autor:
E. T. Seppälä, Mikko J. Alava
The ground-state structure of the two-dimensional random field Ising magnet is studied using exact numerical calculations. First we show that the ferromagnetism, which exists for small system sizes, vanishes with a large excitation at a random field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::905e44797faa081c56a14c193ff80fc2
https://aaltodoc.aalto.fi/handle/123456789/18930
https://aaltodoc.aalto.fi/handle/123456789/18930
We analyze intermittence and roughening of an elastic interface or domain wall pinned in a periodic potential, in the presence of random-bond disorder in (1+1) and (2+1) dimensions. Though the ensemble average behavior is smooth, the typical behavior
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b600a8435180a5da2486a781830d2e83
https://aaltodoc.aalto.fi/handle/123456789/18931
https://aaltodoc.aalto.fi/handle/123456789/18931
Autor:
Mikko J. Alava, E. T. Seppälä
We study the effect of an external field on (1+1) and (2+1) dimensional elastic manifolds, at zero temperature and with random bond disorder. Due to the glassy energy landscape the configuration of a manifold changes often in abrupt, ``first order''
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46e3328348813d1f795cd3f31416d0e4