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在剪切环境下对SiFRP复合材料的废弃进行弧射测试和建模研究

Meicong Wang¹, Jixiang Shan¹, Xin Yang¹

¹Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621900, China.

Materials (Basel, Switzerland)

|September 13, 2025

概括

这项研究研究了在空气动力加热和剪切下对纤维增强聚合物 (SiFRP) 复合物剥离的研究. 开发并验证了一种新的多层除模型,揭示了碳-二氧化反应是关键的内热机制.

科学领域:

材料科学材料科学材料科学
航空航天工程航空航天工程
热力学是一种热力学.

背景情况:

了解复合材料在极端条件下的行为对于热保护系统至关重要.
纤维增强聚合物 (SiFRP) 复合材料用于高温应用.
在空气动力加热和剪切相结合下,SiFRP中的剥离现象需要详细的研究.

研究的目的:

研究SiFRP复合材料在空气动力加热和剪切下的剥离过程.
开发和验证SiFRP的多层废弃模型.
了解热保护机制,特别是碳沉积和碳-反应的作用.

主要方法:

在带有控制热量和压力的弧形喷气风洞中进行实验测试.
采用多层剥离模型进行的数值研究.
在切除过程中测量深度热反应和表面温度.
使用烯酸复合材料数据对模型的验证.

主要成果:

SiFRP复合材料受到高达1100W/cm2的热流和高达84kPa的压力,表面剪切率高达1900Pa.
建立了一个多层废弃模型,结合了碳沉积效应.
该模型准确地预测了烯酸复合材料的表面剥离衰退和内部温度.
碳-二氧化反应热被确定为一个重要的内热机制.

结论:

开发的多层除模型有效地捕捉了SiFRP在联合热和剪切负荷下的除行为.
碳沉积和碳-反应在这些复合材料的内热热保护机制中起着至关重要的作用.
这些发现为设计在高剪切环境中使用-复合材料的先进热保护系统提供了宝贵的见解.

关键词:

剥离剥离剥离剥离碳沉积过程中的碳沉积.剪切环境剪切环境用二氧化加强的复合材料.表面衰退的表面衰退热反应的热反应

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Shearing Stress

Shearing Stress

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