Modeling of strain path change induced anisotropy in BCC structured metals

Yalçınkaya, Tuncay
Geers, M G D
IUTAM Symposium on Multi-Scale Plasticity of Crystalline Materials (5 - 9 Kasım 2007)


Akkus, Yigit; ÇETİN, BARBAROS; Dursunkaya, Zafer (2017-08-30)
In this study, a computational model for the evaporation from a sessile liquid droplet fed from the center to keep the diameter of the droplet constant is presented. The continuity, momentum and energy equations are solved with temperature dependent thenno-physical properties using COMSOL Multi-physics. At the surface of the droplet, convective heat and evaporative mass fluxes are assigned. Since the flow field is affected by evaporative flux, an iterative scheme is built and the computation is automated us...
Modeling of shear yielding members for seismic energy dissipation
Sarıtaş, Afşin (2004-08-01)
Structural members yielding in shear are used in earthquake resistant systems, such as eccentrically braced steel frames and systems with passive energy dissipation devices, in a conscious effort to concentrate the energy dissipation capacity of the structure in components that can be repaired or replaced after a major earthquake. The simulation of the energy dissipation capacity of these components is important in the evaluation of the seismic response of these structural systems. This paper presents a new...
Modeling of radiative heat transfer in strongly forward scattering media of bubbling fluidized bed combustor with and without recycle
Şen, Özge; Külah, Görkem; Selçuk, Nevin; Department of Chemical Engineering (2017)
Predictive accuracy and CPU efficiency of geometric optics approximation (GOA) and scattering phase function simplifications in the freeboard of lignite-fired METU 0.3 MWt ABFBC Test Rig were tested by applying them to the modeling of radiative heat transfer and comparing their predictions against measurements and benchmark solutions. The freeboard was treated as 3-D rectangular enclosure containing grey, absorbing, emitting gas with grey, absorbing, emitting, non/isotropically/anisotropically scattering pa...
Modeling of inelastic microstructure development and inhomogeneous material behavior via non convex rate dependent crystal plasticity
Svendsen, Bob; Klusemann, Benjamın; Yalçınkaya, Tuncay; Geers, M G D (2012-08-19)
In this study, a two-dimensional rate-dependent gradient crystal plasticity model for non-convex energetic hardening is formulated and applied to the simulation of inelastic microstructure formation. In particular, non-convex hardening is modeled via a Landau-Devonshire potential for self-hardening and an interaction-matrix-based form for latent hardening. The algorithmic formulation and numerical implementation treats the displacement and glide-system slips as the primary field variables. Example numerical...
Modeling of dispersion in a polymeric chromatographic monolith
Koku, Harun; Schure, Mark R.; Lenhoff, Abraham M. (Elsevier BV, 2012-05-11)
Dispersion in a commercial polymeric monolith was simulated on a sample geometry obtained by direct imaging using high-resolution electron microscopy. A parallelized random walk algorithm, implemented using a velocity field obtained previously by the lattice-Boltzmann method, was used to model mass transfer. Both point particles and probes of finite size were studied. Dispersion simulations with point particles using periodic boundaries resulted in plate heights that varied almost linearly with flow rate, a...
Citation Formats
T. Yalçınkaya and M. G. D. Geers, “Modeling of strain path change induced anisotropy in BCC structured metals,” Eindhoven, Hollanda, 2007, p. 87, Accessed: 00, 2021. [Online]. Available: