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IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-03-06 DOI:10.1016/j.compstruct.2025.119049

Niranjan Chouhan, Mohnish Kumar Sahu, Devesh Punera

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引用次数: 0

摘要

先进的复合材料是潮汐涡轮叶片、轻质飞机面板、储氢容器等可持续工程应用不可或缺的一部分。然而，这些复合材料在运行过程中很容易因受热和受潮而降解。本研究旨在利用微机械框架了解这些复合材料的降解特性和长期响应。在使用简化经验模型量化树脂在湿热条件下的机械性能退化的同时，Mori-Tanaka 微机械方法评估了不同纤维体积分数的纤维增强复合材料在湿度浓度下的有效退化性能。此外，还利用高阶运动学来计算此类复合材料板在湿热和机械负载下的响应。采用基于有限元（FE）的数值模型来解决控制方程。目前的微机械框架能够足够准确地预测退化的材料特性。复合材料板在湿热负荷下的整体响应与现有研究结果一致。降解分析揭示了随着时间推移而不断变化的机械性能，为了解复合材料的长期性能提供了重要依据。

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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Material degradation based finite element modelling for fibre-reinforced composites in hygrothermal environment

Advanced composites are integral to sustainable engineering applications like tidal turbine blades, lightweight aircraft panels, hydrogen storage vessels etc. However, these composites are susceptible to degradation from heat and moisture exposure during operation. This study aims to comprehend the degraded properties and long-term response of these composites using micromechanical framework. While the deteriorated mechanical properties of resin under hygrothermal conditions are quantified using a simplified empirical model, the Mori-Tanaka micromechanics approach evaluates the effective degraded properties of fibre-reinforced composites for different fibre volume fractions under moisture concentration. Further, a higher order kinematics is utilized to calculate the response of such composite plates under hygrothermal and mechanical loading. A finite element (FE) based numerical model is adopted for solution of the governing equations. Present micromechanical framework is able to predict the degraded material properties with sufficient accuracy. The overall response of the composite plates under hygrothermal loads is found in agreement with the existing works. Degradation analysis unveils the evolving mechanical properties over time, providing vital insights into the long-term performance of composite materials.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.