The paper presents experience with the use of the finite element (FE) technique for thermal analysis.The FE program NASTRAN was used to determine conductances and to calculate temperatures and thermal distortions directly at grid points of FE models. The radiative heat exchange is considered in a different way for the thermal balance of a grid point and for the balance of a node of a finite difference (FD) model. Terms of the conduction matrix between grid points of triangular elements have a physical explanation for right-angled triangles, but have only a mathematical meaning for arbitrary triangles. A method is described which allows the calculation of conductances in complicated structures without solving the heat balance equations. Examples show that a relatively fine mesh size is required in order to calculate conductances with sufficient precision. For a practical problem with conductive and convective heat transfer the FE method was, with a very fine mesh size, more precise than an approximate solution.The FD program TMG gives indirectly the temperatures at grid points. Models with several thousands of elements could be treated with this code.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Experience with Finite Element Modelling for Thermal Analysis


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Zimmermann, F. (Autor:in) / Doenecke, J. (Autor:in) / Schällig, R. (Autor:in)

    Kongress:

    International Conference On Environmental Systems ; 1994



    Erscheinungsdatum :

    1994-06-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Practical Experience with Finite Element Analysis of Propeller Blades

    Brockett, T. / SNAME / Ships Machinery Committee | British Library Conference Proceedings | 1994


    Finite Element Thermal-Structural Analysis

    Thornton, Earl A. | AIAA | 1996


    A Finite Element Thermal Modelling of Modular Space Radiators

    Nervegna, Nicola / Borio, Ugo | SAE Technical Papers | 1982


    Paediatric neck modelling using finite element analysis

    Kumaresan,S. / Yoganandan,N. / Pintar,F.A. et al. | Kraftfahrwesen | 1997


    Modelling Rivets in the Finite Element Analysis

    Vivio, Francesco | SAE Technical Papers | 2007