Space structure vibration modes: How many exist? Which ones are important?

@article{Hughes1987SpaceSV,
  title={Space structure vibration modes: How many exist? Which ones are important?},
  author={Peter Hughes},
  journal={IEEE Control Systems Magazine},
  year={1987},
  volume={7},
  pages={22-28}
}
This paper attempts to shed some light on the two issues raised in the title: How many vibration modes does a real structure have? and Which of these modes are important? The author argues that the "absurd subspace" (all but the first billion modes) is not a strength of continuum modeling, but, in fact, a weakness. Partial differential equations are not real structures, only mathematical models. This paper also contends that the partial differential equation model and the finite-element model… CONTINUE READING
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Advanced Computing Concepts and Techniques in Control Engineering

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Appendage Modal Coordinate Truncation Criteria in Hybrid Coordinate Dynamic Analysis , " Jour

M. El-Raheb, P. Wagner, P. W. Likins. Y. Ohkami, C. Wong
Spacecraji and Rockers

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