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Evaluation method and key factor analysis for thermal protection performance of multifunctional integrated ablative materials
Polymer Composites ( IF 4.8 ) Pub Date : 2020-08-18 , DOI: 10.1002/pc.25773
Weijie Li 1 , Jie Huang 1 , Zhongwei Zhang 2 , Haiming Huang 1 , Jun Liang 2 , Liyan Wang 3
Affiliation  

The thermal protection materials of hypersonic aircrafts in near space are subjected to extremely serious aerothermodynamic environment under long heating time, higher enthalpy, larger heat accumulation, and so forth. Proposing new concepts of materials and accurate evaluation of their performance take the dominant roles in developing high‐efficiency thermal protection materials under this severe environment. By introducing the concepts of gradient and fiber hybridization, this study proposes a multifunctional integrated ablative material scheme to replace heritage ones in order to improve the heat insulation, ablation resistant, and weight reduction capacities. Meanwhile, a thermal‐fluid‐ablative coupling mathematical model taking the manufacturing processing parameters reflecting the gradient and fiber hybridization into consideration is established. Furthermore, the sensitivity analysis for the manufacturing processing parameters is carried out. A simulation tool is developed based on writing FORTRAN codes to solve the multi‐field coupling model numerically. The results that the model and code are effective in analyzing the material's performance and the key manufacturing processing parameters influencing on the thermal protection performance of multifunctional integrated ablative material are pointed out. This work helps to design new thermal protection materials for hypersonic vehicles under extreme aerothermodynamic environments.

中文翻译:

多功能综合烧蚀材料热防护性能评估方法及关键因素分析

高超声速飞机的热防护材料在长时间加热,较高的焓,较大的热量积聚等情况下会经受极其严重的空气动力学环境。在这种严酷的环境下,提出新的材料概念并对其性能进行准确评估是开发高效热防护材料的主要作用。通过介绍梯度和纤维杂交的概念,本研究提出了一种多功能的综合烧蚀材料方案,以代替传统的烧蚀材料方案,以提高隔热性,抗烧蚀性和减轻重量的能力。与此同时,建立了考虑了反映梯度和纤维杂化的制造工艺参数的热-流体-烧蚀耦合数学模型。此外,对制造工艺参数进行灵敏度分析。在编写FORTRAN代码的基础上开发了一种仿真工具,以数值方式求解多场耦合模型。指出了该模型和代码有效地分析了材料的性能,并指出了影响多功能集成烧蚀材料热防护性能的关键制造工艺参数。这项工作有助于在极端空气热动力环境下设计用于超音速飞行器的新型热保护材料。对制造工艺参数进行敏感性分析。在编写FORTRAN代码的基础上开发了一种仿真工具,以数值方式求解多场耦合模型。指出了该模型和代码有效地分析了材料的性能,并指出了影响多功能集成烧蚀材料热防护性能的关键制造工艺参数。这项工作有助于在极端空气热动力环境下设计用于超音速飞行器的新型热保护材料。对制造工艺参数进行敏感性分析。在编写FORTRAN代码的基础上开发了一种仿真工具,以数值方式求解多场耦合模型。指出了该模型和代码有效地分析了材料的性能,并指出了影响多功能集成烧蚀材料热防护性能的关键制造工艺参数。这项工作有助于在极端空气热动力环境下设计用于超音速飞行器的新型热保护材料。指出了其性能以及影响多功能集成烧蚀材料热防护性能的关键制造工艺参数。这项工作有助于在极端空气热动力环境下设计用于超音速飞行器的新型热保护材料。指出了其性能以及影响多功能集成烧蚀材料热防护性能的关键制造工艺参数。这项工作有助于在极端空气热动力环境下设计用于超音速飞行器的新型热保护材料。
更新日期:2020-08-18
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