Experiments and finite element analysis of shot peen forming of wing skin panels integrated with stringers showed that the radius of panels deformed by peening could be expressed as a function of thickness and shot peening intensity. It is verified that panels could be deformed into a saddle shape or twist by shot peening both sides of the panel at the same intensity, elongating it. Simulation of deformation by shot peening was based on thermal stress analysis using the finite element method. Unexpected waving of the panel edge could be well simulated and prevented based on simulation. The bending deformation (curvature radius) of plate (sheet) material caused by shot peen forming can be arranged in terms of plate thickness and intensity, and this relationship can also be applied to forming the chord shape of the integral skin. It is possible to use shot peening to form saddle shapes and shapes needing twists or elongation of the material by applying an equivalent peening intensity to both sides of the material. The spherical deformations occurring when shot peening the integral skin can be corrected later by elongating the stringers only through shot peening. The simulation of shot peen forming deformation was confirmed as possible by making a model of a m material having a small coefficient of linear expansion of only the surface by using finite element method analysis before calculating for heating and cooling the model. This simulation method can be used to reproduce the waving deformation which occurs during shot peen forming, leading to finding a preventive measure against the waving deformation.


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    Title :

    Development of shot peening for wing integral skin for continental business jets


    Additional title:

    Entwicklung des Kugelstrahlens für die Integralhaut der Tragflächen von Kontinental-Strahl-Geschäftsflugzeugen


    Contributors:
    Yamada, T. (author) / Ikeda, M. (author) / Takahashi, T. (author) / Sugimoto, S. (author) / Ohta, T. (author)


    Publication date :

    2002


    Size :

    5 Seiten, 8 Bilder, 1 Tabelle, 1 Quelle



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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