Configuration maintenance of inflated membrane structures using SMA film actuators

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A methodology to maintain the configuration of inflated membrane structures using shape memory alloy (SMA) film actuator is numerically investigated. The two-dimensional incremental formulation of the SMA constitutive model is developed. New parameters related to the thermodynamic energy equation are introduced to describe more general behaviors of the SMA film. With numerical algorithm of wrinkling and SMAs, the interactions between the inflated membrane structure and the SMA film are investigated by using a finite element program. The effectiveness of SMA film to control the configuration of an inflated membrane structure is examined. To demonstrate surface configuration control, two inflatable membrane structures, each with SMA film are used: (1) an inflatable boom similar to a strut supporting structure and (2) an inflatable reflector, which is comprised of two inflated membranes and torus supporting structures.
Publisher
TECH SCIENCE PRESS
Issue Date
2008-03
Language
English
Article Type
Article
Keywords

FINITE-ELEMENT-ANALYSIS; BEHAVIOR

Citation

CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES, v.26, no.1, pp.13 - 30

ISSN
1526-1492
URI
http://hdl.handle.net/10203/5511
Appears in Collection
AE-Journal Papers(저널논문)
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