Statistics – Computation
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002iaf..confe.447m&link_type=abstract
IAF abstracts, 34th COSPAR Scientific Assembly, The Second World Space Congress, held 10-19 October, 2002 in Houston, TX, USA.,
Statistics
Computation
Scientific paper
Large space structures are lightweight and extremely flexible. The highly flexible structures are likely to undergo large orbital displacement and rotation as well as large structural deformation. In order to design, construct and maintain such structures, it is necessary to obtain their accurate response in the actual operating orbital environment. A finite element formulation based on absolute coordinate system is developed to investigate the coupled structural and orbital response of the flexible structure accounting for large structural deformation. A gravitational force model, whose direction and magnitude change with time, is also developed. This paper focuses on the developing a computational technique to study the two-dimensional response of a flexible structure in planar orbit. The present study includes the effects of both axial and bending elastic deformations of the structure. The effects of initial alignment and elliptical orbit on attitude orbital response and the elastic deformation of the flexible structure are investigated. Results are obtained and compared with previous studies. Results are also obtained for the response of flexible structure under external impact forces. It is observed that the pitch motion and/or structural deformations are affected by the load magnitude and position, initial alignment, and orbit type.
Lin Chijie
Malla Ramesh B.
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