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Title: Dynamic analysis of large in-space deployable membrane antennas
Authors: Fang, Houfei
Yang, Bingen
Ding, Hongli
Hah, John
Quijano, Ubaldo
Huang, John
Keywords: antennas
Issue Date: 2-Jul-2006
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006.
Citation: 13th International Congress on Sound and Vibration, Vienna, Austria, July 2, 2006.
Abstract: This paper presents a vibration analysis of an eight-meter diameter membrane reflectarray antenna, which is composed of a thin membrane and a deployable frame. This analysis process has two main steps. In the first step, a two-variable-parameter (2-VP) membrane model is developed to determine the in-plane stress distribution of the membrane due to pre-tensioning, which eventually yields the differential stiffness of the membrane. In the second step, the obtained differential stiffness is incorporated in a dynamic equation governing the transverse vibration of the membrane-frame assembly. This dynamic equation is then solved by a semi-analytical method, called the Distributed Transfer Function Method (DTFM), which produces the natural frequencies and mode shapes of the antenna. The combination of the 2-VP model and the DTFM provides an accurate prediction of the in-plane stress distribution and modes of vibration for the antenna
Appears in Collections:JPL TRS 1992+

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