Zobrazeno 1 - 9
of 9
pro vyhledávání: '"J. C. Sobotka"'
Autor:
J. C. Sobotka, Robert H. Dodds
Publikováno v:
Engineering Fracture Mechanics. 127:211-225
Highly refined simulations of steady, ductile crack growth in a three-dimensional small-scale yielding (SSY) framework provide detailed crack-front fields for computation of Weibull stress values in plane-sided and side-grooved configurations. The sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c097a1186020ebca0ec48b11312692d5
https://doi.org/10.1016/j.engfracmech.2014.06.009
https://doi.org/10.1016/j.engfracmech.2014.06.009
Publikováno v:
International Journal of Solids and Structures. 51(18):3273-3291
One of the major drawbacks of the Gurson-type of porous plasticity models is the inability of these models to predict material failure under low stress triaxiality, shear dominated conditions. This study addresses this issue by combining the damage m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de22fc1cc8f8417d112c82f2356f5faa
Publikováno v:
Journal of Nuclear Materials. 451:292-299
Zirconium alloys such as Zircaloy-4 are used in nuclear applications due to adequate strength, ductility and resistance to radiation damage. Recent modeling efforts have focused on improvements to the predicted elastic–plastic response, complicated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a54ff00ab9203baac526e1a8d51b950
https://doi.org/10.1016/j.jnucmat.2014.04.017
https://doi.org/10.1016/j.jnucmat.2014.04.017
Autor:
J. C. Sobotka, Robert H. Dodds
Publikováno v:
Engineering Fracture Mechanics. 78:1182-1200
The non-singular T-stress provides a first-order estimate of geometry and loading mode, e.g. tension vs. bending, effects on elastic–plastic, crack-front fields under mode I conditions. The T-stress has a pronounced effect on measured crack growth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f28577a65b5ef69e77a4768b629632ba
https://doi.org/10.1016/j.engfracmech.2010.11.018
https://doi.org/10.1016/j.engfracmech.2010.11.018
Autor:
Robert H. Dodds, J. C. Sobotka
Publikováno v:
Engineering Fracture Mechanics. 78:343-363
This work employs high resolution, finite element computations to investigate key features of the elastic–plastic fields near a steadily advancing crack at quasi-static rates under three-dimensional, small-scale yielding conditions. The model repre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51e3543a961d5fbf47302adcb94f317e
https://doi.org/10.1016/j.engfracmech.2010.10.006
https://doi.org/10.1016/j.engfracmech.2010.10.006
Publikováno v:
Engineering Fracture Mechanics. 77:337-347
Recent experimental and computational work by Link and associates has demonstrated that relatively small (W = 150 mm) single edge notched tension specimens (SE(T)) can be used to obtain crack arrest data high in the ductile-to-brittle transition of f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36e7bf27cb7b73e04cb1b0e15f015f23
https://doi.org/10.1016/j.engfracmech.2009.04.006
https://doi.org/10.1016/j.engfracmech.2009.04.006
Publikováno v:
International Journal of Solids and Structures. 46(22-23):4095-4106
This paper describes studies of the near tip fields and the effects on void growth rates for a steadily advancing crack through a ductile metal in the presence of hydrogen, under plane-strain and quasi-static conditions. The computational model deter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79e88812069db1d8ab31458da734db99
Autor:
Robert H. Dodds, J. C. Sobotka
Publikováno v:
Journal of Engineering Materials and Technology. 136
This work extends the generalized plasticity model for structural metals under cyclic loading proposed by Lubliner et al. (1993, “A New Model of Generalized Plasticity and its Numerical Implementation,” Int. J. Solids Struct., 22, pp. 3171–3184
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7cb0cb43167a66e1deecf0eb4093041
https://doi.org/10.1115/1.4025758
https://doi.org/10.1115/1.4025758
Publikováno v:
54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.
This study presents a novel computational framework to improve life prediction capabilities for hypersonic aerospace platforms where evaluating the performance of these structures in extreme environments remains a challenge. Here, thermo-mechanical l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e0c0e02a8de996094def5727621aee3
https://doi.org/10.2514/6.2013-1519
https://doi.org/10.2514/6.2013-1519