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http://dx.doi.org/10.5139/JKSAS.2018.46.12.994

Effect of Clearance on Clamping Characteristics of Segmented Nuts in Pyrotechnic Separation Nut  

Woo, Jeongmin (Department of Aerospace Engineering, Inha University)
Kang, Dahoon (Department of Aerospace Engineering, Inha University)
Choi, Jaeyoung (Department of Aerospace Engineering, Inha University)
Kim, Jeong Ho (Department of Aerospace Engineering, Inha University)
Cho, Jin Yeon (Department of Aerospace Engineering, Inha University)
Jang, Seung-gyo (Agency for Defense Development)
Yang, Hee Won (Hanwha Corporation)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.46, no.12, 2018 , pp. 994-1003 More about this Journal
Abstract
The clamping characteristics of segmented nuts in pyrotechnic separation nut are investigated using finite element analysis. When the segmented nuts are used to clamp objects, a constraint cylinder is necessary to prevent the segmented nuts from spreading out to the radial direction. During the manufacturing process, a clearance is usually introduced between the outer diameter of the segmented nuts and the inner diameter of the constraint cylinder. Therefore to find out the effect of the clearance, proper finite element modeling method is suggested to describe the clamping procedure appropriately. In addition, finite element analysis with the clearance of 0.00, 0.03, 0.06, and 0.10 mm are performed. From the analysis results, the clamping characteristics of segmented nuts are investigated according to the clearance, and several factors which should be considered to design a reliable pyrotechnic separation nut are figured out.
Keywords
PMD; Pyrotechnic Separation Nut; Segmented nuts; Clamping force; Clearance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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