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Advances in Aircraft and Spacecraft Science Volume 5, Number 2, March 2018 , pages 205-223 DOI: https://doi.org/10.12989/aas.2018.5.2.205 |
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Modelling and simulation of a closed-loop electrodynamic shaker and test structure model for spacecraft vibration testing |
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Steffen Waimer, Simone Manzato, Bart Peeters, Mark Wagner and Patrick Guillaume
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| Abstract | ||
| During launch a spacecraft is subjected to a variety of dynamical loads transmitted through the launcher to spacecraft interface or air-born transmission excitations in the acoustic pressure field inside the fairing. As a result, spacecraft are tested on ground to ensure and demonstrate the global integrity of the structure against these loads, to screen the flight hardware for quality of workmanship and to validate mathematical models. This paper addresses the numerical modelling and simulation of the low frequency sine and random vibration tests performed on electrodynamic shaker facilities to comprise the mechanical-borne transmission loads through the launcher to spacecraft interface. Consequently, the paper reviews techniques and methodologies to derive a reliable and representative coupled virtual vibration testing simulation environment based on experimental data. These technologies are explored with the main objectives to ensure a stable, reliable and accurate control while testing. As a result, the use of the derived simulation models in combination with the added value of improved control and signal processing algorithms can lead to a safer and smoother vibration test control of the entire environmental test campaign. | ||
| Key Words | ||
| environmental spacecraft testing; multiphysics modelling and simulation; experimental system identification; structural coupling; vibration control | ||
| Address | ||
| Steffen Waimer: 1) Siemens Industry Software NV, Researchpark 1237, 3001 Leuven, Belgium 2) Acoustics and Vibration Research Group, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium Simone Manzato and Bart Peeters: Siemens Industry Software NV, Researchpark 1237, 3001 Leuven, Belgium Mark Wagner: European Space Agency ESA/ESTEC, Keplerlaan 1, 2200 AG Noordwijk, The Netherlands Patrick Guillaume: Acoustics and Vibration Research Group, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium | ||
