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Proceedings Paper

Camera-based digital real-time static and dynamic testing of deployable/inflatable structures
Author(s): P. Frank Pai; Jiazhu Hu
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Paper Abstract

NASA's recent space programs require the use of many ultra-lightweight deployable/inflatable structures, but there are many modeling, analysis and testing problems. A total-Lagrangian finite element code GESA (Geometrically Exact Structural Analysis) is being developed by the authors by implementing geometrically exact structural theories for the modeling, analysis, and fast prototyping of Highly Flexible Structures (HFSs). However, it is very challenging to experimentally verify the large static and dynamic deformations of such lightweight HFSs by using conventional sensors. This paper presents the use of an EAGLE-500 real-time motion analysis system to measure large static and dynamic deformations of HFSs in order to verify the accuracy of numerical solutions obtained from GESA. Experimental results obtained from several highly flexible structures are used to show the capabilities of this system in characterizing nonlinear statics and dynamics of HFSs.

Paper Details

Date Published: 16 May 2005
PDF: 10 pages
Proc. SPIE 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems, (16 May 2005); doi: 10.1117/12.599205
Show Author Affiliations
P. Frank Pai, Univ. of Missouri/Columbia (United States)
Jiazhu Hu, Univ. of Missouri/Columbia (United States)

Published in SPIE Proceedings Vol. 5758:
Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems
Eric Udd; Daniele Inaudi, Editor(s)

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