Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6271e..30h&link_type=abstract
Modeling, Systems Engineering, and Project Management for Astronomy II. Edited by Cullum, Martin J.; Angeli, George Z.. Procee
Astronomy and Astrophysics
Astronomy
Scientific paper
Analysis of complex interdisciplinary systems such as large telescopes is usually performed using simulation models due to the expense of hardware testbeds. The level of fidelity of these simulation models, or the relative closeness to which the model simulates reality for the behavior under investigation, is often not assessed in a quantitative manner. Rather, the model is described qualitatively as being of either "low" or "high" fidelity, often progressing from lower to higher fidelity models as the candidate designs are down-selected. This paper provides a quantitative assessment of fidelity for structural subsystems for large telescope models based on the Nyquist criterion, shows how it influences simulation accuracy, and applies it to a space telescope model. This metric will be useful for assessing the fidelity of an existing structural finite element telescope model or in creating a new model having sufficient fidelity (sufficient accuracy).
de Weck Olivier
Howell Deborah J.
Miller David W.
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