Zobrazeno 1 - 10
of 152
pro vyhledávání: '"D.J. Lege"'
Autor:
Farhang Pourboghrat, Shi-Hoon Choi, Re Dick, Jeong W. Yoon, D.J. Lege, J.C. Brem, Kwansoo Chung, E. Chu, Frédéric Barlat
Publikováno v:
International Journal of Plasticity. 19:1297-1319
A new plane stress yield function that well describes the anisotropic behavior of sheet metals, in particular, aluminum alloy sheets, was proposed. The anisotropy of the function was introduced in the formulation using two linear transformations on t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6bc102b482a5fe3da17850340275ab6
https://doi.org/10.1016/s0749-6419(02)00019-0
https://doi.org/10.1016/s0749-6419(02)00019-0
Publikováno v:
International Journal of Plasticity. 18:919-939
In this work, modeling of the stress–strain behavior is carried out using a simple dislocation model. This model uses three variables to characterize the dislocation population: The average forest and mobile dislocation densities, ρf and ρm, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b11a44eb7fdaef7a47fcd3cf9af6275
https://doi.org/10.1016/s0749-6419(01)00015-8
https://doi.org/10.1016/s0749-6419(01)00015-8
Autor:
Kuniaki Matsui, Frédéric Barlat, Shigenori Yoshizawa, Takashi Ishikawa, Kwansoo Chung, Shigeo Hattori, Masahiro Yanagawa, Maeda Yasushi, D.J. Lege, Shawn J. Murtha
Publikováno v:
Journal of Japan Institute of Light Metals. 48:585-590
Crystallographic texture is an important material characteristic for the formability of Aluminum alloys. The r-value is well known as a good index of formability for steel. However, there is no such index for aluminum alloys. In this paper, we discus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5574139e3b55ab516e3dbcce2ac8dd3
https://doi.org/10.2464/jilm.48.585
https://doi.org/10.2464/jilm.48.585
Publikováno v:
Journal of Engineering Materials and Technology. 120:48-56
Serrated flow and associated progressive surface markings severely restrict the application of some aluminum sheet alloys for automotive body exteriors. This paper attempts to approach the phenomenon from the localization theory of continuum mechanic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7024fa91c27a865e0e540b25d34939e5
https://doi.org/10.1115/1.2806837
https://doi.org/10.1115/1.2806837
Autor:
T. Ishikawa, Maeda Yasuhiro, J.C. Brem, Masahiro Yanagawa, Shigeo Hattori, Kwansoo Chung, Frédéric Barlat, Kuniaki Matsui, Hayashida Yasuhiro, D.J. Lege, Shawn J. Murtha
Publikováno v:
International Journal of Plasticity. 14:301-318
In this work, the yield surfaces of binary aluminum-magnesium alloy sheet samples were measured using biaxial compression tests. Sheet samples of a given material were stacked and bonded together with epoxy and cubic compression specimens were machin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5aee0e01184e3fdbc9dd6c5cf8e49ef
https://doi.org/10.1016/s0749-6419(97)00065-x
https://doi.org/10.1016/s0749-6419(97)00065-x
Autor:
D.J. Lege, Shigeo Hattori, Kwansoo Chung, Shawn J. Murtha, Maeda Yasuhiro, Hayashida Yasuhiro, Kuniaki Matsui, Frédéric Barlat, R. Becker, Masahiro Yanagawa, J.C. Brem
Publikováno v:
CIÊNCIAVITAE
Scopus-Elsevier
Scopus-Elsevier
In this work, yield surfaces were measured for binary aluminum-magnesium sheet samples which were fabricated by different processing paths to obtain different microstructures. The yielding behavior was measured using biaxial compression tests on cubi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c489d2dd7b28fb314b652e48861cad5c
https://doi.org/10.1016/s0749-6419(97)80005-8
https://doi.org/10.1016/s0749-6419(97)80005-8
Publikováno v:
International Journal of Mechanical Sciences. 39:105-120
A sequential design procedure to optimize sheet forming processes was developed utilizing ideal forming design theory, FEM analysis and experimental trials. For demonstration purposes, this procedure was used to design a blank shape for a highly anis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b650d7539f4daefdb5d200328db4367b
https://doi.org/10.1016/0020-7403(96)00007-0
https://doi.org/10.1016/0020-7403(96)00007-0
Publikováno v:
International Journal of Plasticity. 7:693-712
In classical flow theory of plasticity, it is assumed that the yield surface of a material is a plastic potential. That is, the strain rate direction is normal to the yield surface at the corresponding loading state. Consequently, when the yield surf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::517152096699857f78d25cac619a7cd7
https://doi.org/10.1016/0749-6419(91)90052-z
https://doi.org/10.1016/0749-6419(91)90052-z
Publikováno v:
Textures and Microstructures. 14:1013-1018
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::405e3de3fcce966404904cc54fa7ee45
https://doi.org/10.1155/tsm.14-18.1013
https://doi.org/10.1155/tsm.14-18.1013
Publikováno v:
MRS Proceedings. 652
A method for construction of “processing windows” to avoid negative strain rate sensitivity and associated serrated flow in some aluminum alloys is described. The method is based on the amplitude Ginzburg-Landau (GL) equations and analysis of bif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb437fc9d43f4421d52e85b469854788
https://doi.org/10.1557/proc-652-y4.6
https://doi.org/10.1557/proc-652-y4.6