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Thermo‐mechanical fluid‐structure interaction for thermal buckling
Author(s) -
Martin Katharina,
Reese Stefanie
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900456
Subject(s) - buckling , isotropy , computation , boundary value problem , solver , viscoplasticity , thermal , materials science , finite element method , fluid–structure interaction , hardening (computing) , structural engineering , deformation (meteorology) , mechanics , constitutive equation , composite material , computer science , engineering , physics , mathematics , thermodynamics , mathematical analysis , algorithm , quantum mechanics , layer (electronics) , programming language
Aerothermodynamical loads cause buckling and plastic deformation of thin‐walled structures under boundary conditions, which restrict the structural movement. We present the numerical computation of a loosely coupled fluid‐structure interaction for thermal buckling. The task of the research is to provide a mechanical model which incorporates the correct material behaviour and is suitable for thermal panel buckling. For this, an elasto‐viscoplastic material model with non‐linear isotropic hardening is used, which also includes nonlinearly temperature dependent material parameters. This material model is implemented into a user material in Abaqus FEA . The structural computation is coupled with the fluid computation within the fluid‐structure interaction code ifls from the TU Braunschweig. For the fluid solver TAU from the DLR is used.