Mechanical fatigue and spectrum analysis of small-satellite

Gasser Abdelal, Nader Abuelfoutouh, Ahmed Hamdy

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Mechanical fatigue due to environmental loads and spectrum analysis due to launch loads of the primary structure of a low cost, low-earth orbit small satellite intended for earth observation missions are presented. The payload of the satellite under consideration is a precise optical unit to image the earth’s surface having a mass of 45 kg. 3-D Finite Element Model for the satellite structure is generated by applying substructure method. Modal analysis is required to determine natural frequencies of the satellite and define its mode shape. Then, ranking of mode shapes according to specific constraint is performed. Harmonic analysis at resonance frequencies with the highest ranking is done and cumulative fatigue damage analysis is performed. Spectrum analysis is performed for Small Sat structure to verify the satellite structure reliability under all dynamic random vibration loads applied during transportation and launch cases.
Original languageEnglish
Pages (from-to)265-278
Number of pages14
JournalInternational Journal of Mechanics and Materials in Design
Issue number3
Early online date27 Feb 2008
Publication statusPublished - 01 Sept 2008

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Aerospace Engineering


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