ORALS

SESSION: PhysicalFriPM1-R10	Vayenas International Symposium on Physical Chemistry and its applications for sustainable development
Fri Oct, 25 2019 / Room: Aphrodite B (100/Gr. F)
Session Chairs: Katerina Aifantis; Eftychia Martino; Session Monitor: TBA

14:00: [PhysicalFriPM105] Plenary
Gradient Theory and Mg-Alloys
Elias Aifantis¹ ; ¹Aristotle University of Thessaloniki, Thessaloniki, Greece;
Paper Id: 444 [Abstract]

Vayenas et al have proposed an unexpectedly simple but extremely powerful method for elementary particle physics. It is based upon a straightforward synthesis of quantum mechanics and special relativity. The central idea is to replace Newton’s classical gravitational law with the expression (where is the rest mass of neutrino and the Lorentz factor) for the rotating neutrino model (RNM) which was invented to describe the strong force in the nucleus. Here, an attempt is made to revisit ideas used in continuous media for dealing with singularities, in order to modify in a different way the classical gravitational potential. The resulting modified gravitational potential is used for the RNM configuration, Vayenas results are recovered.

References:
[1] E.C. Aifantis, Internal length gradient (ILG) material mechanics across scales and disciplines, Adv. Appl. Mech. 49, pp. 1-110, 2016.

[2] E.C. Aifantis, Weak nonlocal extension of classical material models, Frontiers in Physics, 2019 (in press).

SESSION: MagnesiumThuPM2-R4	Intl Symp. on Next Generation Magnesium Alloys and Their Applications for Sustainable Development
Thu Oct, 24 2019 / Room: Adonis
Session Chairs: TBA Session Monitor: TBA

15:55: [MagnesiumThuPM209] Invited
Gradient Theory and Mg-Alloys
Elias Aifantis¹ ; ¹Aristotle University of Thessaloniki, Thessaloniki, Greece;
Paper Id: 448 [Abstract]

After a brief introduction of the current status of gradient theory and its implications to elasticity, plasticity and diffusion, a discussion on applications to Mg alloys is provided. An effort is made to focus on the novel Mg alloy discovered by Professor Kawamura and the projects LPSO & FRAMED.

References:
[1] E.C. Aifantis, Internal length gradient (ILG) material mechanics across scales and disciplines, Adv. Appl. Mech. 49, pp. 1-110, 2016.

[2] E.C. Aifantis, Weak nonlocal extension of classical material models, Frontiers in Physics, 2019 (in press).

SESSION: GeomechanicsSatPM1-R7	Schrefler International Symposium on Geomechanics and Applications for Sustainable Development
Sat Oct, 26 2019 / Room: Athena (105/Mezz. F)
Session Chairs: Manuel Pastor; Konrad Bergmeistser; Session Monitor: TBA

15:15: [GeomechanicsSatPM108] Plenary
Fighting Singularities in Solids and Fluids
Elias Aifantis¹ ; ¹Aristotle University of Thessaloniki, Thessaloniki, Greece;
Paper Id: 447 [Abstract]

One of the still persisting problems in both solid and fluids mechanics is to deal with singularities in the stress/strain fields or the flow field. An associated problem is the mesh-size dependence and non-convergence in finite element calculations in the material softening regime. A simple regularization method can be used to overcome both difficulties. This is shown for both elastic and plastic solids, as well as for both Newtonian and complex fluids.

References:
[1] E.C. Aifantis, Internal length gradient (ILG) material mechanics across scales and disciplines, Adv. Appl. Mech. 49, pp. 1-110, 2016.

[2] E.C. Aifantis, Weak nonlocal extension of classical material models, Frontiers in Physics, 2019 (in press).