Skip to main content

2021 | OriginalPaper | Buchkapitel

3. Crystal Kinetics and -Thermodynamics

verfasst von : Christian B. Silbermann, Matthias Baitsch, Jörn Ihlemann

Erschienen in: Introduction to Geometrically Nonlinear Continuum Dislocation Theory

Verlag: Springer International Publishing

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config
loading …

Abstract

This chapter presents formulations for the free energy attributed to elastic strains and geometrically necessary dislocations of a cubic (primitive) crystal. Proposing a consistent thermodynamical framework, field equations are derived, starting from the Clausius-Planck inequality. Thereby, energy dissipation due to dislocation motion is introduced in a thermodynamically consistent way. Finally, different flow rules for the slip systems are presented and discussed with regard to the thermodynamic consequences.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Fußnoten
1
All quantities from \(\widehat{\mathcal {K}}\) exhibit a ‘reference frame’-invariance and observer-independence [3, 4].
 
2
As mass constancy can be assumed here, the actual mass is equal to the reference mass.
 
3
The formulation with the structural tensors https://static-content.springer.com/image/chp%3A10.1007%2F978-3-030-63696-8_3/501613_1_En_3_IEq10_HTML.gif makes https://static-content.springer.com/image/chp%3A10.1007%2F978-3-030-63696-8_3/501613_1_En_3_IEq11_HTML.gif an isotropic tensor function. Thereby, Relation (3.4) combined with (3.29) fulfills the axiom of material objectivity [5, p. 459].
 
4
Here and only here in this book \(\nu \) denotes Poisson’s ratio (and no slip rate as everywhere else).
 
5
Especially with regard to feedback effects in the geometrically nonlinear theory it seems questionable to model e. g. elastic properties isotropically, but plastic properties anisotropically.
 
6
Since the slip system naturally has a two-dimensional structure, the micro stresses occurring in it are of dimension force/length, in contrast to the Cauchy stresses with force/surface.
 
7
The other way round, an exact quantification of the viscosity is necessary to obtain physically meaningful results.
 
Literatur
1.
Zurück zum Zitat Gurtin, M.E.: A gradient theory of single-crystal viscoplasticity that accounts for geometrically necessary dislocations. J. Mech. Phys. Solids 50(1), 5–32 (2002)CrossRef Gurtin, M.E.: A gradient theory of single-crystal viscoplasticity that accounts for geometrically necessary dislocations. J. Mech. Phys. Solids 50(1), 5–32 (2002)CrossRef
2.
Zurück zum Zitat Ihlemann, J.: Beobachterkonzepte und Darstellungsformen der nichtlinearen Kontinuumsmechanik. VDI-Verlag, Düsseldorf (2014) Ihlemann, J.: Beobachterkonzepte und Darstellungsformen der nichtlinearen Kontinuumsmechanik. VDI-Verlag, Düsseldorf (2014)
3.
Zurück zum Zitat Gurtin, M.E.: A finite-deformation, gradient theory of single-crystal plasticity with free energy dependent on densities of geometrically necessary dislocations. Int. J. Plast. 24(4), 702–725 (2008)CrossRef Gurtin, M.E.: A finite-deformation, gradient theory of single-crystal plasticity with free energy dependent on densities of geometrically necessary dislocations. Int. J. Plast. 24(4), 702–725 (2008)CrossRef
4.
Zurück zum Zitat Gurtin, M.E.: A finite-deformation, gradient theory of single-crystal plasticity with free energy dependent on the accumulation of geometrically necessary dislocations. Int. J. Plast. 26(8), 1073–1096 (2010)CrossRef Gurtin, M.E.: A finite-deformation, gradient theory of single-crystal plasticity with free energy dependent on the accumulation of geometrically necessary dislocations. Int. J. Plast. 26(8), 1073–1096 (2010)CrossRef
5.
Zurück zum Zitat Haupt, P.: Continuum Mechanics and Theory of Materials, vol. 2. Springer, Berlin (2002)CrossRef Haupt, P.: Continuum Mechanics and Theory of Materials, vol. 2. Springer, Berlin (2002)CrossRef
6.
Zurück zum Zitat Gurtin, M.E., Anand, L.: A theory of strain-gradient plasticity for isotropic, plastically irrotational materials. Part II: Finite deformations. Int. J. Plast. 21(12), 2297–2318 (2005) Gurtin, M.E., Anand, L.: A theory of strain-gradient plasticity for isotropic, plastically irrotational materials. Part II: Finite deformations. Int. J. Plast. 21(12), 2297–2318 (2005)
7.
Zurück zum Zitat Berdichevsky, V.L., Le, K.C.: Dislocation nucleation and work hardening in anti-plane constrained shear. Continuum Mech. Thermodyn. 18(7–8), 455–467 (2007)CrossRef Berdichevsky, V.L., Le, K.C.: Dislocation nucleation and work hardening in anti-plane constrained shear. Continuum Mech. Thermodyn. 18(7–8), 455–467 (2007)CrossRef
8.
Zurück zum Zitat Le, K.C., Sembiring, P.: Analytical solution of plane constrained shear problem for single crystals within continuum dislocation theory. Arch. Appl. Mech. 78(8), 587–597 (2008)CrossRef Le, K.C., Sembiring, P.: Analytical solution of plane constrained shear problem for single crystals within continuum dislocation theory. Arch. Appl. Mech. 78(8), 587–597 (2008)CrossRef
9.
Zurück zum Zitat Ottosen, N.S., Ristinmaa, M.: The Mechanics of Constitutive Modeling. Elsevier, Amsterdam (2005) Ottosen, N.S., Ristinmaa, M.: The Mechanics of Constitutive Modeling. Elsevier, Amsterdam (2005)
10.
Zurück zum Zitat Silbermann, C.B., Ihlemann, J.: Geometrically linear continuum theory of dislocations revisited from a thermodynamical perspective. Arch. Appl. Mech. 88(1–2), 141–173 (2017) Silbermann, C.B., Ihlemann, J.: Geometrically linear continuum theory of dislocations revisited from a thermodynamical perspective. Arch. Appl. Mech. 88(1–2), 141–173 (2017)
Metadaten
Titel
Crystal Kinetics and -Thermodynamics
verfasst von
Christian B. Silbermann
Matthias Baitsch
Jörn Ihlemann
Copyright-Jahr
2021
DOI
https://doi.org/10.1007/978-3-030-63696-8_3

    Marktübersichten

    Die im Laufe eines Jahres in der „adhäsion“ veröffentlichten Marktübersichten helfen Anwendern verschiedenster Branchen, sich einen gezielten Überblick über Lieferantenangebote zu verschaffen.