Research on Mechanical Model of EPDM Insulation Charring Layer

The coupling effect of physics, chemistry and mechanics is through charring layer in the process of ablation of the insulation material. Description of the structure and mechanical properties of charring layer is the critical factor to numerical computation for foretelling the ablation of insulation...

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Published inApplied Mechanics and Materials Vol. 152-154; pp. 57 - 63
Main Authors Hu, Chun Bo, Xu, Yi Hua, Zeng, Zhuo Xiong, Yang, Yu Xin
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.01.2012
Subjects
Charring Layer
Mechanical Model
Porous Medium
EPDM
Solid Rocket Motor (SRM)
Structural Characteristics
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Summary:The coupling effect of physics, chemistry and mechanics is through charring layer in the process of ablation of the insulation material. Description of the structure and mechanical properties of charring layer is the critical factor to numerical computation for foretelling the ablation of insulation material. The characteristic of charring layer structure of EPDM insulation at sorts of ablating condition were analyzed, and based on characteristic of porous medium of charring layer, the mechanical model with porosity as parameter was modeled by using theory of solid porous medium. According to the intensity determination of charring layer, the coefficient of intensity model was determined, then, the failure criterion of charring layer was set up, which can provide the mechanical parameters of charring layer for numerical computation to foretell the ablation of insulation material.
Bibliography:Selected, peer reviewed papers from the 2012 International Conference on Mechanical Engineering and Materials (ICMEM 2012), January 15-16, 2012, Melbourne, Australia
ISBN:9783037853528
3037853522
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.152-154.57