Finite element model updating in structural dynamics

Using the NASA FUN3D computational fluid dynamic (CFD) code, full and ROM aeroelastic solutions are computed at several Mach numbers and presented in the form of root locus plots.

finite element model updating in structural dynamics-51

Detecting 4J and 10J inner impacts within the central region of the specimen is challenging when using conventional non-destructive techniques (NDT) because of the complex geometry and interference with the web.

Signals are compared for the same selected sensing path; and amplitude differences have been observed in tuning curves after the 10J impact, which implies the occurrence of a structural change related to the impact.

The origins, development, implementation, and application of AEROM, NASA’s patented reduced-order modeling (ROM) software, are presented.

Using the NASA FUN3D computational fluid dynamic (CFD) code, full and ROM aeroelastic solutions are computed at several Mach numbers and presented in the form of root The origins, development, implementation, and application of AEROM, NASA’s patented reduced-order modeling (ROM) software, are presented.

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To demonstrate that the technique can be generalized, the results from different crack lengths and from tilted crack are also presented.

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The method and software have been applied successfully to several configurations including the Lockheed-Martin N 2 supersonic configuration and the Royal Institute of Technology (KTH, Sweden) generic wind-tunnel model, among others.

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