A variational approach to the modelling of grooving in a three-dimensional setting

0476924 - ÚFM 2018 RIV GB eng J - Článek v odborném periodiku
Hackl, K. - Fischer, F. D. - Svoboda, Jiří
A variational approach to the modelling of grooving in a three-dimensional setting.
Acta Materialia. Roč. 129, MAY (2017), s. 331-342. ISSN 1359-6454. E-ISSN 1873-2453
Grant CEP: GA ČR(CZ) GA15-06390S
Institucionální podpora: RVO:68081723
Klíčová slova: surfaces * diffusion * thermodynamics * kinetics * triple junction
Obor OECD: Thermodynamics
Impakt faktor: 6.036, rok: 2017

We present a theory of thermal grooving, i.e. surface motion due to surface diffusion, based solely on geometrical and energetic arguments and a variational approach involving a thermodynamic extremal principle. The theory is derived for a fully three-dimensional setting. All interface and contact conditions at junction lines and points of the material aggregate are derived rigorously and without ambiguity. A finite element implementation of the model is employed. Numerical examples are presented and compared with experimental results from the literature.
Trvalý link: http://hdl.handle.net/11104/0273473