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http://dx.doi.org/10.5139/JKSAS.2009.37.11.1096

Low-Temperature Deformation Behavior of a Stainless Steel for the Thrust Chamber Mixing Head  

Lee, Keum-Oh (한국항공우주연구원 발사체연구본부)
Ryu, Chul-Sung (한국항공우주연구원 발사체연구본부)
Choi, Hwan-Seok (한국항공우주연구원 발사체연구본부)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.37, no.11, 2009 , pp. 1096-1103 More about this Journal
Abstract
The predictions of the material behavior for the structural stability of thrust chamber mixing head at very-low temperatures are very important since the head is highly pressurized by the liquid oxygen with very-low temperatures and experiences impact load by the thrust of combustion chamber. The constitutive equation to express tensile deformation behavior of the material at very-low temperature to predict deformation behavior of the mixing head is formulated by composition of thermal component and athermal component based on dislocation energy barrier model suggested by Kocks. Also, increase of thermal stress components by the increase of obstacles at low temperatures is formulated to the equation similar with Ramberg-Osgood equation. The suggested model predicted well the material's behavior at the wide temperature ranges from very-low temperature to ambient temperature.
Keywords
Energy barrier model; Flow stress; Low temperature; Combustion chamber; Stainless steel;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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