Artículo
A new thermodynamic model for solid metals under elastic deformations
Fecha de publicación:
03/2019
Editorial:
Springer
Revista:
Continuum Mechanics And Thermodynamics
ISSN:
0935-1175
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We present a theoretical model of the free Helmholtz energy (F) for solid metals that incorporates three contributions: the elastic part through a local strain description, the vibrational energy within a quasi-harmonic Einstein model with volume-dependent cohesive energy, and the electronic contribution in the free electron gas setting. To get F, we introduce discrete approximations of the Helmholtz energy defined in cubic lattices and show their convergence to F by finite element methods. For homogeneous deformations, the obtained model is applied to derive an equation of state (EOS) which shows a very good agreement with experimental data. Moreover, compared to other known theoretical EOSs, the present model is highly stable under different estimations of its parameters.
Palabras clave:
ELASTIC DEFORMATIONS
,
EQUATION OF STATE
,
SOLID METALS
,
THERMODYNAMIC MODEL
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - MENDOZA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MENDOZA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MENDOZA
Citación
Bertoldi, Dalía Surena; Ochoa, Pablo Daniel; A new thermodynamic model for solid metals under elastic deformations; Springer; Continuum Mechanics And Thermodynamics; 31; 5; 3-2019; 1425-1437
Compartir
Altmétricas