Strength response investigation of defective C/C composite materials based on the Weibull model

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2024-07-25 DOI:10.1016/j.coco.2024.102021

引用次数: 0

Abstract

In this study, the issue of random fiber strength resulting from initial fiber defects and matrix pore defects in the strength response of C/C composite materials is addressed. A method for generating random numbers following the Weibull distribution is proposed and an improved random sequence adsorption (RSA) algorithm is employed to describe pore defects in the matrix, ultimately leading to the development of a representative volume element (RVE) model for C/C composite materials. The influence of fiber strength distribution and pore defects on the mechanical properties of unidirectional C/C (UD-C/C) composite materials is analyzed. This study offers a new approach to investigate the mechanical behavior of C/C composite materials, taking into account both fiber initial defects and pore defects.

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基于威布尔模型的缺陷 C/C 复合材料强度响应研究

本研究探讨了 C/C 复合材料强度响应中初始纤维缺陷和基体孔隙缺陷导致的随机纤维强度问题。研究提出了一种按照威布尔分布生成随机数的方法，并采用改进的随机序列吸附（RSA）算法来描述基体中的孔隙缺陷，最终建立了 C/C 复合材料的代表性体积元素（RVE）模型。分析了纤维强度分布和孔隙缺陷对单向 C/C (UD-C/C) 复合材料机械性能的影响。这项研究为研究 C/C 复合材料的力学行为提供了一种新方法，同时考虑了纤维初始缺陷和孔隙缺陷。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.