The paper discusses the employment of eigensolutions of finite element structural models as a tool to assess airframe structural integrity. It is aimed at the aviation technical manager with a general tertiary background, thereby including development from first principles of fundamental concepts required for the derivation and application of an inverse correlation technique. Consideration of the physical and mathematical properties of structural eigensolutions indicates this technique's potential to provide a global assessment of the structural integrity of structures representative of simplified aircraft wings for which finite element structural models exist or can be developed. A proof of concept study has applied the technique to beam element analytical models of varying degrees of freedom, correlated with preconditioned analytical complete modal sets, providing an indication of the method's effectiveness in locating small changes in elemental stiffness representative of structural fatigue.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Structural Integrity Assessment Through Eigensolution


    Additional title:

    Sae Technical Papers


    Contributors:
    Ulmer, Alan (author)

    Conference:

    World Aviation Congress & Exposition ; 1998



    Publication date :

    1998-09-28




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Eigensolution for large structural systems with substructures

    Arora, J.S. / Nguyen, D.T. | Tema Archive | 1980



    Adjoint Methods for Eigensolution Sensitivity Analysis

    Wang, B. / AIAA / United States; National Aeronautics and Space Administration et al. | British Library Conference Proceedings | 1994


    Efficient Design Studies Using Eigensolution Reanalysis

    Bretl, John / Winterer, Sean | SAE Technical Papers | 1993


    Efficient design studies using eigensolution reanalysis

    Winterer,S. / Bretl,J. / Structural Dynamics Research,US | Automotive engineering | 1993