MODAL ANALYSIS IN A 2U CUBESAT STRUCTURE
Palavras-chave:
2U cubesat, Modal analysis, Finite element method, Boundary conditionsResumo
The miniaturization of satellites has helped students practice their knowledge and build a
real satellite. Many universities have turned to this study, as other private and important institutions.
The CubeSat standard gives a set of specifications to developers and defines a cubic picosatellite with
less than 1.33kg. The vibration tests are some set of important tests to improve a satellite structure
safety. Also, before doing vibration tests, FEM analysis is largely used to analysis the CAD model,
before built the satellite. In this work is aimed make some modal analysis in an ordinary structure
developed. The results can be applied in a real CubeSat that is going to be developed and later
withstand the vibration tests in the Mechanical Vibration and Acoustics Laboratory of Federal
University of Ceará. It was made modal analysis varying the load conditions and putting a circuit
plate. In addition, it was also made harmonic analysis evaluating slack in the CubeSat’s feet. Some
changes in the mode shape were found in the presence of the circuit plate, and principally with
slacking in the feet. There are mode shapes that all the deformation concentrates in the circuit plate,
this natural frequency may damage the circuit. The results and observations will help in future analysis
and tests.
