Results 81 to 90 of about 143,393 (276)

Traveling waves for degenerate diffusive equations on networks

Networks & Heterogeneous Media, 2017
In this paper we consider a scalar parabolic equation on a star graph; the model is quite general but what we have in mind is the description of traffic flows at a crossroad. In particular, we do not necessarily require the continuity of the unknown function at the node of the graph and, moreover, the diffusivity can be degenerate.
Corli, Andrea, Ruvo, Lorenzo di, Malaguti, Luisa, Rosini, Massimiliano D.   +3 more
openaire   +6 more sources

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Theory of transverse spin dynamics in a polarized Fermi liquid and an itinerant ferromagnet

, 2005
The linear equations for transverse spin dynamics in a weakly polarized degenerate Fermi liquid with arbitrary relationship between temperature and polarization are derived from Landau-Silin phenomenological kinetic equation with general form of two ...
A. A. Abrikosov, A. A. Abrikosov, A. A. Abrikosov, C. Herring, D. Forster, E. M. Lifshits, I. A. Fomin, I. E. Dzyaloshinskii, I. E. Dzyaloshinskii, K. Maki, L. D. Landau, L. D. Landau, L. Landau, P. S. Kondratenko, P. S. Kondratenko, T. Moriya, V. N. Kashcheev, V. N. Kashcheev, V. P. Mineev, V. P. Silin, V. P. Silin   +20 more
core   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

NONLINEARLY DEGENERATE WAVE EQUATION Vtt = c(lv1s-1v)xx

Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2023
It is well known that the generalized solutions for the Cauchy problem (1.4)-(1.5) are also the solutions of the nonlinearly degenerate wave equation Vtt = c(lvls-1v)xx with the initial data v0(x). In this paper, we first study the strong and weak entropies of system (1.4), then the H-1 compactness of  η( vɛ, uɛ)t + q( vɛ, uɛ)x of these entropy-entropy
openaire   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
wiley   +1 more source

Numerical treatment for some abstract degenerate second-order evolutionary problem

Results in Applied Mathematics
This paper addresses the numerical analysis of a class of a degenerate second-order evolution equations. We employ a finite element method for spatial discretization and a family of implicit finite difference schemes for time discretization.
Ramiro Acevedo, Christian Gómez, Paulo Navia   +2 more
doaj   +1 more source

Theoretical and numerical analysis of a degenerate nonlinear cubic Schrödinger equation

Moroccan Journal of Pure and Applied Analysis, 2022
In this paper, we are interested in some theoretical and numerical studies of a special case of a degenerate nonlinear Schrödinger equation namely the so-called Gross-Pitaevskii Equation(GPE).
Alahyane Mohamed, Chrifi Abderrazak, Echarroudi Younes   +2 more
doaj   +1 more source

RATE EQUATION THEORY OF DEGENERATE FOUR WAVE MIXING

Acta Physica Sinica, 1988
Degenerate four wave mixing is treated using the quantum theory of fradiation. Starting from the energy conservation and momentum conservation laws and using the transition rate-formula for quantum states, the equation of motion for photon number densities of four beams is derived and exact solutions are obtained.
null DING HONG-YU, null WU BAI-SHI, null YIN DA-JUN, null LI JIN-QUAN   +3 more
openaire   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source