Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Johannes. Weertman"'
Autor:
Johannes Weertman
Publikováno v:
Journal of Geophysical Research: Solid Earth. 119:530-548
Three problems are solved in this paper that are related to transonic earthquakes. (1) The shear shock Mach wave emanating from a transonic gliding edge dislocation which impacts an interface. (2) A transonic edge dislocation gliding parallel and nea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ee48d99442ecdd8fa5fdd43cb21353b
https://doi.org/10.1002/2013jb010121
https://doi.org/10.1002/2013jb010121
Autor:
Johannes Weertman
Publikováno v:
Philosophical Magazine. 91:373-388
The use of only discrete edge image dislocations to solve the problem of an edge dislocation, moving or stationary, near a welded interface separating material of different elastic constants (or a free surface) is thwarted, as is well known, because
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::829045e2c481df43cc6f47d57db907a6
https://doi.org/10.1080/14786435.2010.523715
https://doi.org/10.1080/14786435.2010.523715
Autor:
Johannes. Weertman
Publikováno v:
Geophysical Journal of the Royal Astronomical Society. 14:353-370
Summary In this paper we attempt to find a solution of the following problem. It appears reasonable to expect that if thermal convection occurs in the Earth’s mantle, it may also occur within the Moon and Mars. The dimensions of these latter two bo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5427e536c7fac0839316a190dbc8c98
https://doi.org/10.1111/j.1365-246x.1967.tb06251.x
https://doi.org/10.1111/j.1365-246x.1967.tb06251.x
Autor:
Johannes Weertman, Kai Zhang
Publikováno v:
Metallurgical and Materials Transactions A. 40:2255-2263
High-purity Cu (99.995 pct pure) rods were cryogenically rolled through a 90 pct reduction in area and given a very brief low-temperature anneal. The resultant material was highly textured, had very low internal strains, and had a broad distribution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a33b37d7d3494279c25c32ca99a58b1
https://doi.org/10.1007/s11661-009-9925-y
https://doi.org/10.1007/s11661-009-9925-y
Autor:
Johannes Weertman
Publikováno v:
Materials Science and Engineering: A. :59-63
In a previous paper we considered how the crack blunting dislocation emission mechanism likely leads to a Paris fatigue crack growth rate law exponent n = 2 if dislocation shielding is not important and showed how dislocation crack tip shielding can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7255de4e97198fd056a0354b70111bc3
https://doi.org/10.1016/j.msea.2006.08.128
https://doi.org/10.1016/j.msea.2006.08.128
Autor:
Johannes Weertman
Publikováno v:
International Journal of Fracture. 137:251-259
Maximum shear stress trajectories are obtained for the mode I and for the mode II crack in an isotropic elastic solid in plane strain.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::808473c3b65e893bec5e84b88ea2be97
https://doi.org/10.1007/s10704-005-3078-9
https://doi.org/10.1007/s10704-005-3078-9
Autor:
Johannes Weertman
Publikováno v:
Mechanics of Materials. 37:543-550
The stress and strain potentials are given for the mode I and the mode II crack in an elastic, isotropic elastic solid in plane strain in a relatively simple closed form using cylindrical coordinates centered at the center of the crack. The potential
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b10d41de95b4399aa63ff1b1754311a
https://doi.org/10.1016/j.mechmat.2004.04.006
https://doi.org/10.1016/j.mechmat.2004.04.006
Autor:
Johannes Weertman
Publikováno v:
International Journal of Solids and Structures. 42:2011-2032
An approximate solution is obtained for the mode III crack in full scale yielding in a power law work hardening solid. The solution is obtained in stress space. It is based on, and is a modification of, the stress and strain potentials for the mode I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e72b2f3b53adb89601bcf6eab7ad35b
https://doi.org/10.1016/j.ijsolstr.2004.08.022
https://doi.org/10.1016/j.ijsolstr.2004.08.022
Autor:
Johannes Weertman
Publikováno v:
Annals of Glaciology. 40:43-46
The base of the ice in the transition zone between an ice stream and an ice shelf is likely to be well lubricated by broadly distributed water, a condition which should permit fast sliding motion. It has been observed that motion takes place not smoo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f77f054b0c84895702ae9c5412d8c609
https://doi.org/10.3189/172756405781813429
https://doi.org/10.3189/172756405781813429
Publikováno v:
Philosophical Magazine. 84:1067-1104
A class of cohesive solutions of moving glide dislocations with intersonic speeds has been derived on the basis of the fundamental equation of a moving dislocation introduced by Weertman in conjunction with a proposed generalized Bilby–Cottrell–S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::802a1e3e3a14ba03ae4488e5dccfd832
https://doi.org/10.1080/14786430310001655970
https://doi.org/10.1080/14786430310001655970