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Advances in Aircraft and Spacecraft Science
  Volume 5, Number 2, March 2018 , pages 251-258

A virtual shaker testing experience: Modeling, computational methodology and preliminary results
Pietro Nali, Alain Bettacchioli, Guglielmo Landi and Marco Gnoffo

    This work illustrates the progress of a TAS activity at exploring the challenges and the benefits of the Virtual Shaker Testing (VST) approach. The definition and the validation of new computational methodologies with respect to the state of the art were encouraged. The shaker Finite Element (FE) model in lateral configuration was built for the purpose and it was merged with the SpaceCraft (S/C) FE model, together with the S/C-Shaker adapter. FE matrices were reduced through the Craig-Bampton method. The VST transient analysis was performed in MATLABRnumerical computing environment. The closed-loop vibration control is accounted for and the solution is obtained through the fourth-order Runge Kutta method. The use of pre-existing built-in functions was limited by authors with the aim of tracing the impact of all the problems\' parameters in the solution. Assumptions and limitations of the proposed methodology are detailed throughout this paper. Some preliminary results pertaining to the current progress of the activity are thus illustrated before the conclusions.
Key Words
    virtual shaker testing; vibration tests; structural dynamics; S/C mechanical testing
Pietro Nali and Guglielmo Landi: Thales Alenia Space, Strada Antica di Collegno, 253, 10146, Turin, Italy
Alain Bettacchioli: Thales Alenia Space, 5 Allée des Gabians, 06150 Cannes, France
Marco Gnoffo: Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129, Turin, Italy

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