A computational micro-sphere model applied to the simulation of phase-transformations

Summary, in English

We present an efficient model for the simulation of polycrystalline materials undergoing solid to solid phase transformations. As a basis, we use a one-dimensional, thermodynamically consistent phase-transformation model. This model is embedded into a micro-sphere formulation in order to simulate three-dimensional boundary value problems. To solve the underlying evolution equations, we use a newly developed explicit integration scheme which could be proved to be unconditionally A-stable. Besides the investigation of homogeneous deformation states, representative finite element examples are discussed. It is shown that the model nicely reflects the overall behaviour. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

• Författare: Richard Ostwald; Thorsten Bartel; Andreas Menzel
• Avdelning/ar: Hållfasthetslära
• Publiceringsår: 2010
• Språk: Engelska
• Sidor: 605-622
• Publikation/Tidskrift/Serie: Zeitschrift für Angewandte Mathematik und Mechanik
• Volym: 90
• Issue: 7-8
• Länkar: http://dx.doi.org/10.1002/zamm.200900390
• Dokumenttyp: Artikel i tidskrift
• Förlag: John Wiley & Sons Inc.
• Ämne: Mechanical Engineering
• Nyckelord: Phase-transformations; micro-sphere model; finite element method
• Aktiv: Published
• ISBN/ISSN/Övrigt: ISSN: 0044-2267