A two-dimensional finite element model of the grain boundary based on thermo-mechanical strain gradient plasticity

• Autorzy: Song Y. , Voyiadjis G. Z.

Identyfikatory

DOI

10.15632/jtam-pl.56.2.377

• Języki publikacji: EN

Abstrakty

EN

In this work, a two-dimensional finite element model for the grain boundary flow rule is developed based on the thermo-mechanical gradient-enhanced plasticity theory. The proposed model is temperature-dependent. A special attention is given to physical and micromechanical nature of dislocation interactions in combination with thermal activation on stored and dissipated energy. Thermodynamic conjugate microforces are decomposed into energetic and dissipative components. Correspondingly, two different grain boundary material length scales are present in the proposed model. Finally, numerical examples are solved in order to explore characteristics of the proposed grain boundary flow rule.

Słowa kluczowe

EN

strain gradient plasticity; grain boundary; energetic; dissipative; 2D FEM

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2018
• Tom: Vol. 56 nr 2
• Strony: 377--391
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Song Y.

• Louisiana State University, Department of Civil and Environmental Engineering, Baton Rouge, LA, USA

autor

Voyiadjis G. Z.

• Louisiana State University, Department of Civil and Environmental Engineering, Baton Rouge, LA, USA

Bibliografia

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• 19. Voyiadjis G.Z., Song Y., 2017, Effect of passivation on higher order gradient plasticity models for non-proportional loading: energetic and dissipative gradient components, Philosophical Magazine, 97, 5, 318-345
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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).