Manufacture and Experimental Analysis of a Concentrated Strain Based Deployable Truss Structure

reportActive / Technical Report | Accession Number: ADA453559 | Open PDF

Abstract:

A truss structure was built and tested to advance deployable structures technology based on the concentrated strain approach. In 3rd order hierarchy systems, this architecture has the potential to provide a 10 fold improvement in mass efficiency, and demonstrate a linear compaction ratio that is five times better than current technology. A 101.6 cm x 12.7 cm x 12.7 cm test article was fabricated, and a buckling test and analysis was performed. The total mass of the deployable truss structure was 28 grams. This structure was constructed of piecewise constant cross section elements. One of the components consisted of high modulus pull-truded carbon fiber rods CFRs for the majority of the length. The other components were compliant flexure joints made of Nitinol NiTi, a shape memory alloy SMA capable of a repeatable superelastic strain of 5.0 at either boundary. The results of this research provide a contribution to the deployable structures science by improving the compaction ratio and the mass efficiency of deployable structures without decreasing the truss performance limits.

Author(s):
Mejia-ariza, Juan M. ; Murphey, Thomas W. ; Pollard, Eric L.
Author Organization(s):
VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG
Descriptive Note:
Conference paper postprint
Supplementary Note:
Prepared in collaboration with CSA Engineering, Inc., Albuquerque, NM. Present at the Structures, Structural Dynamics, and Materials Conference (47th) held 1-4 May 2006 held at Newport, RI. Published as paper AIAA 2006-1686 in Proceedings of the AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference (47th), 2005; ISBN 1-56347-808-0. The original document contains color images.
Pagination:
0011

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AIAA-2006-1686, AFRL-VS-PS-TP-2006-1029
Monitor Series:
TP-2006-1029, AFRL-VS-PS
 Subject Terms
Joint Capability Areas:
JCA_1_Force Support; JCA_1.2_Force Preparation; JCA_5_Command and Control; JCA_5.3_Planning; JCA_3.2_Engagement; JCA_3_Force Application; JCA_4.1_Deployment and Distribution; JCA_4.6_Engineering; JCA_8_Building Partnerships
Communities of Interest:
Space
Descriptor(s):
*SPACE TECHNOLOGY, *TRUSSES, *SHAPE MEMORY ALLOYS, SYMPOSIA, NUMERICAL ANALYSIS, CARBON FIBERS, STRAIN(MECHANICS)
Field(s)/Group(s):
Metallurgy and Metallography, Structural Engineering and Building Technology, Astronautics, Numerical Mathematics
Keyword(s):
*DEPLOYABLE STUCTURES, *CONCENTRATED STRAIN, MASS EFFICIENCY, NITINOL, SPACE VEHICLES, SUPERELASTICITY, LIQUID CRYSTALLINE POLYESTERS
Report Date:
2006 May 01
Creation Date:
2006 Sep 27