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http://dx.doi.org/10.7234/kscm.2006.19.4.031

Effect of Curing Temperature and Autofrettage Pressure on a Type 3 Cryogenic Propellant Tank  

Kang, Sang-Guk (한국과학기술원 기계공학과 항공우주공학전공)
Kim, Myung-Gon (한국과학기술원 기계공학과 항공우주공학전공)
Kong, Cheol-Won (한국항공우주연구원 우주발사체 사업단 구조 그룹)
Kim, Chun-Gon (한국과학기술원 기계공학과 항공우주공학전공)
Publication Information
Composites Research / v.19, no.4, 2006 , pp. 31-38 More about this Journal
Abstract
In this study, effects of curing temperature and autofrettage pressure on a Type 3 cryogenic propellant tank, which is composed of composite hoop/helical layers and a metal liner, were investigated by thermo elastic analysis and composite/aluminum ring specimen tests. Temperature field of a Type 3 tank was obtained from solving the heat transfer problem and, in turn, was used as nodal temperature boundary conditions during the elastic analyses for curing temperature and autofrettage pressure effects. As a result, it was shown that the higher curing temperature was, the more residual compressive stress and tensile stress were induced in composites and metal liner, respectively. On the contrary, autofrettage pressure brought the reduction of these residual thermal stresses caused by cryogenic environments to the tank structure. This tradeoff for curing temperature and autofrettage pressure must be considered in the design and manufacturing stages for a Type 3 cryogenic tank.
Keywords
Curing temperature; Autofrettage pressure; Cryogenic; Type 3 tank; Thermo elastic analysis;
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