Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pabei..23..355z&link_type=abstract
Progress in Astronomy (ISSN 1000-8349), Vol. 23, No. 4, p. 355 - 362 (2005)
Astronomy and Astrophysics
Astronomy
Astronomical Facilities And Technique, Finite Element Method, Space Solar Telescope (Sst), Structure Analysis, Modal Analysis, Transient Response, Thermal Analysis
Scientific paper
Finite Element Method (FEM), the primary numerical means to process structure analysis in the modern engineering field, is adopted widely in the design of astronomical instruments at present. It can help designers to find out various characteristics of the object, to discover the weakness in stiffness and strength, and to improve and optimize the design as well. It is also used widely in many processes during the designing of the Space Solar Telescope (SST), such as in the main truss and the primary cell. From the beginning of the geometry modeling and the finite element creating, many aspects such as linear static, modal analysis, transient response and thermal analysis are demonstrated in SST. The error existing in the FEM, why it exists, and how to reduce it are discussed. Finally, the development trend of FEM in the astronomical instruments especially the space astronomical instruments is presented.
Chen Zhi-Ping
Chen Zhi-Yuan
Yang Shi-Mo
Zhang Rui
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