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http://dx.doi.org/10.20910/JASE.2019.13.1.18

Thermal Buckling Characteristics for Thermal Protection System Panel Using Ritz Method  

Lee, Heesoo (Graduate School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Kim, Yongha (Graduate School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Park, Jungsun (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of Aerospace System Engineering / v.13, no.1, 2019 , pp. 18-28 More about this Journal
Abstract
High speed vehicles are subjected to high thermal loadings due to aerodynamic heating during ascent and reentry. Since a thermal protection system panel is mechanically constrained, it may cause thermal buckling under excessive thermal loadings. The thermal buckling could disturb the field of flow and make aerodynamic characteristics unstable. It is thus necessary to design the thermal protection system panel to prevent thermal buckling. This study defines the analytical model of temperature distribution using the finite difference method for the thermal protection system panel with large temperature differences inside and outside. This paper proposes the approximate model of the thermal buckling characteristics for the thermal protection system panel through the use of the Ritz method. The validity of the present method was verified by comparing the results of the finite element analysis. Furthermore, this research performs the parametric analysis of the thermal buckling characteristics for the thermal protection system panel by using the approximate model.
Keywords
Thermal Protection System Panel; Thermal Buckling Analysis; Ritz Method;
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