Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Xabier Garaizar"'
Publikováno v:
Journal of Advances in Modeling Earth Systems. 5:598-610
[1] Modern climate models contain numerous input parameters, each with a range of possible values. Since the volume of parameter space increases exponentially with the number of parameters N, it is generally impossible to directly evaluate a model th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8dc788712c151f0a99fbfc4c9707532
https://doi.org/10.1002/jame.20040
https://doi.org/10.1002/jame.20040
Autor:
Michael Gordon, F. Xabier Garaizar
Publikováno v:
Quarterly of Applied Mathematics. 57:245-259
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93fe2a6a47030b28c95f910859de77f4
https://doi.org/10.1090/qam/1686188
https://doi.org/10.1090/qam/1686188
Publikováno v:
Journal of Mathematical Analysis and Applications. 219:344-363
In elastoplasticity models, there is a stress threshold or yield condition that plays a role in determining whether the material is deforming elastically or plastically. If the stress is below the threshold, then the deformation is elastic, and is ty
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60eaaecd65192439ee76eb6e88e6d5c4
https://doi.org/10.1006/jmaa.1997.5817
https://doi.org/10.1006/jmaa.1997.5817
Publikováno v:
SIAM Journal on Scientific Computing. 20:750-779
In this paper we describe a numerical algorithm for the study of shear-band formation and growth in a two-dimensional antiplane shear of granular materials. The algorithm combines front-tracking techniques and adaptive mesh refinement. Tracking provi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5397a3cf0989230ed077623d0c4a28b
https://doi.org/10.1137/s1064827597319271
https://doi.org/10.1137/s1064827597319271
Publikováno v:
Journal of Computational Physics. 131:54-69
In this paper we describe a numerical algorithm for the study of shear band, formation and growth in two-dimensional antiplane shear. The constitutive model uses a non-associative flow rule. The numerical scheme is based on a Godunov method for updat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fdc350d1e05d18f1a457bbb28dfb2b9
https://doi.org/10.1006/jcph.1996.5456
https://doi.org/10.1006/jcph.1996.5456
Autor:
Michael Gordon, F. Xabier Garaizar
Publikováno v:
Mathematics and Mechanics of Solids. 1:425-443
A system of partial differential equations describing antiplane shearing of an elastoplastic material is studied. The constitutive relations for plastic deformation include a nonassociative flow rule and strain hardening. Nonassociativity leads to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7f89005a4d7ef110122e9873df32310
https://doi.org/10.1177/108128659600100405
https://doi.org/10.1177/108128659600100405
Autor:
David G. Schaeffer, F. Xabier Garaizar
Publikováno v:
Journal of the Mechanics and Physics of Solids. 42:21-50
We study numerically a model for shear bands that is loosely based on antiplane shearing of granular material. In the model, a shear band is idealized to a jump discontinuity in the solution to the dynamic PDE. We do not explicitly incorporate small
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a51ce9a72d3d444859cbc4a94946ce6
https://doi.org/10.1016/0022-5096(94)90049-3
https://doi.org/10.1016/0022-5096(94)90049-3
Autor:
Xabier Garaizar
Publikováno v:
Quarterly of Applied Mathematics. 52:289-309
We describe an algorithm for the numerical resolution of elasto-plastic deformations in the context of antiplane shear models. The algorithm is a second-order Godunov method. For these models the eigenvalues associated to the hyperbolic system are di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8f0f9d0c3979ffce2e7fd8725b5fb23
https://doi.org/10.1090/qam/1276239
https://doi.org/10.1090/qam/1276239
Autor:
Xabier Garaizar
In this paper I argue for the need for a strong Science and Technology program in the Nuclear Weapons Complex as the basis for maintaining a credible deterrence capability. The current Nuclear Posture Review establishes a New Triad as the basis for t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebea577b2c16c86a3f51714493748764
https://doi.org/10.2172/1010400
https://doi.org/10.2172/1010400
Autor:
Xabier Garaizar
Publikováno v:
Journal of Elasticity. 26:43-63
This paper describes a numerical algorithm for the Riemann solution for nonlinear elasticity. We assume that the material is hyperelastic, which means that the stress-strain relations are given by the specific internal energy. Our results become more
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f85971bf60dc15c12bd7204f8dd81be
https://doi.org/10.1007/bf00041150
https://doi.org/10.1007/bf00041150