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Dynamic Analysis of Large In-Space Deployable Membrane AntennasThis 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.
Document ID
20060050767
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Fang, Houfei
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Yang, Bingen
(University of Southern California Los Angeles, CA, United States)
Ding, Hongli
(University of Southern California Los Angeles, CA, United States)
Hah, John
(Hah Hah and Associates, Inc. Monterey, CA, United States)
Quijano, Ubaldo
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Huang, John
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2006
Subject Category
Structural Mechanics
Meeting Information
Meeting: 13th International Congress on Sound and Vibration (ICSV13 - Vienna)
Location: Vienna
Country: Austria
Start Date: July 2, 2006
Distribution Limits
Public
Copyright
Other
Keywords
vibrations
membranes
reflectarray
dynamics
antennas

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