Results 71 to 80 of about 8,834,308 (229)

Quantum fluctuation induced ordered phase in the Blume-Capel model

, 2004
We consider the Blume-Capel model with the quantum tunneling between the excited states. We find a magnetically ordered phase transition induced by quantum fluctuation in a model.
Blume R., Boukheddaden K., Chakrabarti B. K., Koseki O., Nishino M., Todoroki N., Yamada Y.   +6 more
core   +2 more sources

Effect of Al Concentration on the Microstructural Evolution of Fe-Cr-Al Systems: A Phase-Field Approach

Metals, 2020
In this study, the microstructural evolution of an Fe-Cr-Al system was simulated in two-dimensional (2D) and three-dimensional (3D) systems using the phase-field method.
Jeonghwan Lee, Kwangheon Park, Kunok Chang   +2 more
doaj   +1 more source

Phase-Field Simulation of Bubble Evolution and Heat Transfer in Microchannels Under Subcooled and Saturated Flow Boiling

Engineering Proceedings
This study numerically investigates the growth and dynamics of a single vapor bubble in a rectangular microchannel under subcooled and saturated inlet conditions using the phase-field method coupled with the Lee phase-change model.
Jawed Ahmed Jamali, Ying He
doaj   +1 more source

Modeling Segregation of Fe–C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics

Metals, 2023
The primary carbide in high carbon chromium bearing steels, which arises from solute segregation during non-equilibrium solidification, is one of the key factors affecting the mechanical properties and performance of the related components. In this work,
Tong-Zhao Gong, Yun Chen, Wei-Ye Hao, Xing-Qiu Chen, Dian-Zhong Li   +4 more
doaj   +1 more source

Phase‐field material point method for brittle fracture [PDF]

International Journal for Numerical Methods in Engineering, 2017
SummaryThe material point method for the analysis of deformable bodies is revisited and originally upgraded to simulate crack propagation in brittle media. In this setting, phase‐field modelling is introduced to resolve the crack path geometry. Following a particle in cell approach, the coupled continuum/phase‐field governing equations are defined at a
E. G. Kakouris, S. P. Triantafyllou
openaire   +2 more sources

Phase-field modeling for axonal extension of nerve cells

Mechanical Engineering Journal, 2015
In this study, we applied a modified Kobayashi-Warren-Carter (KWC) phase-field model to the neurite growth process. To confirm the applicability of this model, we observed axonal extension of PC-12D cells cultured with nerve growth factor (NGF). Based on
Tomohiro TAKAKI, Kazuya NAKAGAWA, Yusuke MORITA, Eiji NAKAMACHI   +3 more
doaj   +1 more source

Classical transverse Ising spin glass with short- range interaction beyond the mean field approximation

, 1998
The classical transverse field Ising spin- glass model with short-range interactions is investigated beyond the mean- field approximation for a real d- dimensional lattice.
Bethe H, Binder K, Bray A J, Chakrabarti B K, De Dominicis C, Fisher D S, Fisher K H, I Rabuffo, K Lukierska-Walasek, K Walasek, L De Cesare, Mezard M, Parisi G, Parisi G, Peierls R, Pirc R, Shankar R   +16 more
core   +1 more source

Phase transitions and spin excitations of spin-1 bosons in optical lattice

, 2017
We investigate ground state properties of spin-1 bosonic system trapped in optical lattice with extended standard basis operator (SBO) method. For both ferromagnetic ($U_20$) systems, we analytically figure out the symmetry properties in Mott-insulator ...
Zhao, Bo, Zhu, Min-Jie
core   +1 more source

An extension of the phase field method to model interactions between interfacial damage and brittle fracture in elastoplastic composites

, 2020
An extension of the phase field method to model interfacial damage in elastoplastic composites is proposed. In the matrix, an elastoplastic phase field is employed to model the fracture process.
Pengfei Li, J. Yvonnet, C. Combescure
semanticscholar   +1 more source

Effect of Elastic Strain Energy on Dynamic Recrystallization During Friction Stir Welding of Dissimilar Al/Mg Alloys

Metals
Dynamic recrystallization (DRX) is a critical microstructural evolution mechanism in friction stir welding (FSW) of metallic materials, directly determining the mechanical properties and corrosion resistance of weld joints. In the field of DRX simulation,
Faliang He, Lei Shi, Chuansong Wu
doaj   +1 more source