Thermal reaction based mesoscale ablation model for phase degradation and pyrolysis of needle-punched composite

被引：2

作者：

Chen, Yu ^{[1
]}

Tao, Ran ^{[1
]}

Mao, Yiqi ^{[2
]}

机构：

[1] Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China

[2] Hunan Univ, Coll Mech & Vehicle Engn, Dept Engn Mech, Changsha 410082, Hunan, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2024年 / 258卷

基金：

中国国家自然科学基金;

关键词：

Needle-punched mesostructure; Ablation; Abaqus user subroutines; Thermomechanical coupling; Pyrolysis; CARBON; CONDUCTIVITY; RESISTANCE; SURFACE;

D O I：

10.1016/j.compscitech.2024.110898

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Needle-punched composites are highly valued for their exceptional resistance to interlaminar properties, ablation, and design flexibility, making them increasingly popular in aerospace thermal protection systems. This work investigates the mesoscale structural characteristics and thermophysical properties of needle-punched composites in ablation process. Oxyacetylene ablation experiments were carried out at different temperatures, and a mesoscopic needle-punched structure model was established based on the results of CT characterization. Further, Abaqus custom subroutine was used to reveal the ablation evolution mechanism of carbon fiber reinforced phenolic resin-based needle-punched composites. The results show that, at mesoscopic scale, the acicular fiber bundle perpendicular to the ablative surface accelerates the heat conduction to the interior of the material and promotes the thermal damage and performance degradation of the composite.

引用

页数：15

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