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  • 1.
    jsessionid=112C1EE25F869F8DAFACE4AA93FD7682.c4.iopscience.cld.iop.org, Annika
    et al.
    MEFOS − Stiftelsen för Metallurgisk Forskning.
    Legge, D.
    University of Luleå.
    Process development of aluminum ironing using finite element analysis1999In: Modelling and Simulation in Materials Science and Engineering, ISSN 0965-0393, E-ISSN 1361-651X, Vol. 7, no 6, 1005-1011 p.Article in journal (Refereed)
    Abstract [en]

    In this paper, the use of finite-element simulation of an aluminum ironing process is presented. In this process friction, clearance distance between punch and die and punch radius must all be taken into consideration when designing products and processes. In practice, it is difficult to analyze individual parameters separately, but with computer simulation it is easy to see the effects of changing one specific parameter on the outcome of the process. This work has demonstrated the use of computational support in product development to gain an understanding of the effects of process and geometric parameters. The most important results were confirmation of the sensitivity of the process to clearance distance between punch and die and, also, frictional conditions, as well as the relative insensitivity of the process to change in punch nose radius.

  • 2.
    jsessionid=18B0653575ADA5FE168BC397D2678FC8.c3.iopscience.cld.iop.org, Pär
    et al.
    MEFOS − Stiftelsen för Metallurgisk Forskning.
    Szekely, Julian
    MEFOS − Stiftelsen för Metallurgisk Forskning.
    Choo, Roland
    MEFOS − Stiftelsen för Metallurgisk Forskning.
    Quinn, Timothy
    MEFOS − Stiftelsen för Metallurgisk Forskning.
    Mathematical models of transport phenomena associated with arc-welding processes: A survey1994In: Modelling and Simulation in Materials Science and Engineering, ISSN 0965-0393, E-ISSN 1361-651X, Vol. 2, no 5, 995-1016 p.Article in journal (Refereed)
    Abstract [en]

    A comprehensive survey is presented of research on transport phenomena, that is, heat flow, fluid flow, mass transfer, and electrodynamics, associated with arc welding. Both gas-metal arc-welding (GMAW) and gas-tungsten arc welding (GTAW) systems are considered, and appropriate emphasis is placed on the intrinsic differences between these systems. The topics discussed include the behaviour of the arc, and its interaction with both the electrode and the surrounding medium, on the one hand, and the behaviour of the weld pool on the other. The limited work done on the coupling between arcs, electrodes, and weld pools is also discussed, as are some process-control issues, but the problems of thermal stress evolution and stress-induced deformation in the solid state are not treated. A critical discussion of the comparison between model predictions and experimental measurements is a key feature of the presentation, which concludes with a discussion of the critical problems that still need to be addressed.

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