Thermomechanical coupling for charring ablators

Rui Fu; Haoyue Weng; Jonathan F. Wenk; Alexandre Martin

doi:10.2514/1.T5194

Thermomechanical coupling for charring ablators

Rui Fu, Haoyue Weng, Jonathan F. Wenk, Alexandre Martin

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Thermomechanical analysis of ablative materials is of great importance to the design of thermal-protection systems. A finite volume method for coupling the mechanical and thermal response models for ablation problems is proposed. This method is capable of simulating both transient and static thermomechanical responses. The solver is verified against analytic solutions and through code-to-code comparisons. It is then fully coupled to a state-of-the-art material response code. Coupled results show that high temperature gradients have significant effects on the mechanical performance and stress generation. The magnitude and the location ofthe stress concentration can play a significant role in structural integrity, and may lead to crack formation as well as spallation.

Original language	English
Pages (from-to)	369-379
Number of pages	11
Journal	Journal of Thermophysics and Heat Transfer
Volume	32
Issue number	2
DOIs	https://doi.org/10.2514/1.T5194
State	Published - 2018

Bibliographical note

Funding Information:
Support for this work was provided by Kentucky EPSCoR and NASA award NNX13AN04A, and NASA award NNX16AD06A. The authors are grateful to E. Sozer at NASA Ames Research Center for insightful discussions on the modeling code.

Publisher Copyright:
© Copyright 2017 by Rui Fu, Haoyue Weng, Jonathan F. Wenk, and Alexandre Martin.

ASJC Scopus subject areas

Condensed Matter Physics
Aerospace Engineering
Mechanical Engineering
Fluid Flow and Transfer Processes
Space and Planetary Science

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10.2514/1.T5194

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title = "Thermomechanical coupling for charring ablators",

abstract = "Thermomechanical analysis of ablative materials is of great importance to the design of thermal-protection systems. A finite volume method for coupling the mechanical and thermal response models for ablation problems is proposed. This method is capable of simulating both transient and static thermomechanical responses. The solver is verified against analytic solutions and through code-to-code comparisons. It is then fully coupled to a state-of-the-art material response code. Coupled results show that high temperature gradients have significant effects on the mechanical performance and stress generation. The magnitude and the location ofthe stress concentration can play a significant role in structural integrity, and may lead to crack formation as well as spallation.",

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AU - Fu, Rui

AU - Weng, Haoyue

AU - Wenk, Jonathan F.

AU - Martin, Alexandre

N1 - Funding Information: Support for this work was provided by Kentucky EPSCoR and NASA award NNX13AN04A, and NASA award NNX16AD06A. The authors are grateful to E. Sozer at NASA Ames Research Center for insightful discussions on the modeling code. Publisher Copyright: © Copyright 2017 by Rui Fu, Haoyue Weng, Jonathan F. Wenk, and Alexandre Martin.

PY - 2018

Y1 - 2018

N2 - Thermomechanical analysis of ablative materials is of great importance to the design of thermal-protection systems. A finite volume method for coupling the mechanical and thermal response models for ablation problems is proposed. This method is capable of simulating both transient and static thermomechanical responses. The solver is verified against analytic solutions and through code-to-code comparisons. It is then fully coupled to a state-of-the-art material response code. Coupled results show that high temperature gradients have significant effects on the mechanical performance and stress generation. The magnitude and the location ofthe stress concentration can play a significant role in structural integrity, and may lead to crack formation as well as spallation.

AB - Thermomechanical analysis of ablative materials is of great importance to the design of thermal-protection systems. A finite volume method for coupling the mechanical and thermal response models for ablation problems is proposed. This method is capable of simulating both transient and static thermomechanical responses. The solver is verified against analytic solutions and through code-to-code comparisons. It is then fully coupled to a state-of-the-art material response code. Coupled results show that high temperature gradients have significant effects on the mechanical performance and stress generation. The magnitude and the location ofthe stress concentration can play a significant role in structural integrity, and may lead to crack formation as well as spallation.

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Thermomechanical coupling for charring ablators

Abstract

Bibliographical note

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