Abstract
The effects of oxidation on mechanical behavior of a cone sample of ZrB2-SiC ceramic under arc-jet test conditions is studied by a finite element (FE) model. First a steady-state heat transfer FE method was employed to conduct the thermal analysis and obtain the temperature distribution in the inner body of the cone. Then, resulting temperature distribution is applied to the thermomechanical finite element analysis to calculate the thermal stress distribution in the cone body. Due to the mismatch of material properties between the bulk ZrB2-SiC and its new products after oxidation, the outer oxide layers constrain the thermal deformation of the inner bulk ZrB2-SiC thereby putting it in compression and outside oxide layers in tension. The stress concentrations occur at the pore tips in the pore area due to the geometric heterogeneity.
Recommended Citation
L. R. Dharani and J. Wei, "Thermomechanical Modeling of Cone Sample of ZrB2-SiC Ceramic under Arc-Jet Conditions," Earth and Space 2014: Engineering for Extreme Environments - Proceedings of the 14th Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments, pp. 513 - 519, American Society of Civil Engineers, Jan 2014.
The definitive version is available at https://doi.org/10.1061/9780784479179.054
Department(s)
Mechanical and Aerospace Engineering
International Standard Book Number (ISBN)
978-078447917-9
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Society of Civil Engineers, All rights reserved.
Publication Date
01 Jan 2014
