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Modeling and Simulation of a Shape Memory Release Device  

Lee, Yeung-Jo (국방과학연구소)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.10, no.3, 2006 , pp. 99-108 More about this Journal
Abstract
Aerospace applications use pyrotechnic devices with many different functions. Functional shock, safety, overall system cost issue, and availability of new technologies, however, question the continued use of these mechanisms on aerospace applications. Release device is an important example of a task usually executed by pyrotechnic mechanisms. Many aerospace applications like satellite solar panels deployment or weather balloon separation need a release device. Several incidents, where pyrotechnic mechanisms could be responsible for spacecraft failure, have been encouraging new designs for these devices. The Frangibolt is a non explosive device which comprises a commercially available bolt and a small collar made of shape memory alloy (SMA) that replace conventional explosive bolt systems. This paper presents the modeling and simulation of Frangiblot by the change of bolt size and notch geometry. This analysis may contribute to improve the Frangibolt design.
Keywords
Shape Memory Alloy; Release Device; Design; Simulation; Frangibolt;
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