Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Roth Christian C."'
Publikováno v:
EPJ Web of Conferences, Vol 250, p 02012 (2021)
Experiments at ten strain rates ranging from 0.001/s to 4/s are carried out on uniaxial tension specimens extracted from DP800 metal sheets. Digital Image Correlation (DIC) is used to obtain surface strain fields and a high speed infrared (IR) camera
Externí odkaz:
https://doaj.org/article/0a9425d4b4804a6985b22539b7e4284b
Autor:
Adlafi Morwan, Galpin Bertrand, Mahéo Laurent, Roth Christian C., Mohr Dirk, Grolleau Vincent
Publikováno v:
EPJ Web of Conferences, Vol 250, p 01020 (2021)
Under plane stress conditions, most micromechanical and phenomenological models predict a minimum in ductility for plane strain tension stress state. Therefore, the stress state of plane strain tension plays a crucial role in many forming and crash a
Externí odkaz:
https://doaj.org/article/22865536626e41e4b03123e39c2d81e8
Publikováno v:
EPJ Web of Conferences, Vol 250, p 05007 (2021)
Slow, intermediate and high strain rate experiments with UT geometries are performed on aluminum AA7075-T6 sheet metal at various temperatures. The comprehensive experimental program characterizes the plasticity response at temperatures ranging from
Externí odkaz:
https://doaj.org/article/57397a8d8ab540ffbc6579006e57b5c4
Publikováno v:
EPJ Web of Conferences, Vol 183, p 01052 (2018)
Ductile fracture experiments are carried out at different stress states, strain rates and temperatures on a range of flat Mars 300 steel specimens to calibrate both a plasticity and a fracture model. To predict the onset of fracture a stress state an
Externí odkaz:
https://doaj.org/article/77fb80989db34271851578f5ffb5d785
Publikováno v:
EPJ Web of Conferences, Vol 183, p 01053 (2018)
Plasticity and fracture experiments are carried out on flat smooth and notched tensile specimens extracted from DP800 steel sheets. A split Hopkinson pressure bar testing system equipped with a load inversion device is utilized to reach high strain r
Externí odkaz:
https://doaj.org/article/8a380a256fbf4c34b3c629d20dc39909
Autor:
Grolleau Vincent, Lafilé Vincent, Roth Christian C., Galpin Bertrand, Mahéo Laurent, Mohr Dirk
Publikováno v:
EPJ Web of Conferences, Vol 183, p 02022 (2018)
Among all other stress states achievable under plane stress conditions, the lowest ductility is consistently observed for plane strain tension. For static loading conditions, V-bending of small sheet coupons is the most reliable way of characterising
Externí odkaz:
https://doaj.org/article/3d5da5e54ac24c6fa1bbac29b93d0ab8
Publikováno v:
In International Journal of Solids and Structures 1 December 2024 305
Publikováno v:
In International Journal of Mechanical Sciences 1 August 2024 275
Publikováno v:
EPJ Web of Conferences, Vol 94, p 01080 (2015)
The Hosford-Coulomb model incorporates the important effect of the Lode angle parameter in addition to the stress triaxiality to predict the initiation of ductile fracture. A strain-rate dependent extension of the Hosford-Coulomb model is presented t
Externí odkaz:
https://doaj.org/article/7766f1fc7f194762a3b8f096804fe323
Autor:
Roth Christian C., Mohr Dirk
Publikováno v:
EPJ Web of Conferences, Vol 94, p 01078 (2015)
Adiabatic shear banding is a well-understood failure mechanism of metals at high strain rates. In addition, recent research on the ductile fracture of metals has demonstrated that shear localization at the microscale is also an important precursor of
Externí odkaz:
https://doaj.org/article/f3bee82bf6fc4ec08b74590da804c260