基于单向层压板疲劳实验预测 T800 碳纤维复合材料结构件的疲劳寿命

IF 5.7 2区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Fatigue Pub Date : 2024-09-28 DOI:10.1016/j.ijfatigue.2024.108622

Yidong Zhang , Tao Zheng , Gang Liu , Huihu Lu , Guang Li , Qingsong Zong , Yunpeng Gao , Wei Zhang

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引用次数: 0

摘要

本研究以单向层压板的疲劳实验结果为基础，通过实验和数值分析研究了 T800 碳纤维/环氧树脂复合材料结构组件的疲劳性能。分别对 [0]16、[90]16 和 [±45]8 薄片进行了疲劳实验，获得了建模所需的基本疲劳参数。完善了 T800 碳纤维/环氧树脂单向层压板的疲劳寿命模型，并为疲劳渐进损伤模型提供了疲劳退化规则。根据三维哈辛准则建立了 T800 板材的疲劳渐进损伤分析模型，预测了板材的疲劳寿命和疲劳损伤失效过程。建立了 T800 碳纤维复合材料工字钢结构件的疲劳寿命预测模型，可预测疲劳破坏的主要类型、疲劳寿命和疲劳破坏发生的位置。预测的结构部件疲劳寿命与实验结果具有良好的一致性。该方法可计算包括 0°、45° 和 90°层角的结构部件，并获得疲劳寿命等值线。

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Predicting the fatigue life of T800 carbon fiber composite structural component based on fatigue experiments of unidirectional laminates

This study is based on the fatigue experiment results of unidirectional laminates and investigates the fatigue performance of T800 carbon fiber/epoxy resin composite structural components through experimental and numerical analysis. Fatigue experiments were performed on [0]₁₆, [90]₁₆, and [±45]₈ laminates individually, obtaining the fundamental fatigue parameters necessary for modeling. The fatigue life model for T800 carbon fiber/epoxy resin unidirectional laminates was refined, and fatigue degradation rules were provided for the fatigue progressive damage model. A fatigue progressive damage analysis model for T800 laminates was established based on the 3D Hashin criterion, predicting the fatigue life and fatigue damage failure process of the laminates. A fatigue life prediction model was developed for T800 carbon fiber composite I-beam structural components, which can predict the primary types of fatigue failure, fatigue life and the location of fatigue failure occurrence. The predicted fatigue life of structural components shows good consistency with the experimental results. This method can calculate structural components including ply angles of 0°, 45°, and 90° and obtain the fatigue life contour.

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来源期刊

International Journal of Fatigue 工程技术-材料科学：综合

CiteScore

10.70

自引率

21.70%

发文量

619

审稿时长

58 days

期刊介绍： Typical subjects discussed in International Journal of Fatigue address: Novel fatigue testing and characterization methods (new kinds of fatigue tests, critical evaluation of existing methods, in situ measurement of fatigue degradation, non-contact field measurements) Multiaxial fatigue and complex loading effects of materials and structures, exploring state-of-the-art concepts in degradation under cyclic loading Fatigue in the very high cycle regime, including failure mode transitions from surface to subsurface, effects of surface treatment, processing, and loading conditions Modeling (including degradation processes and related driving forces, multiscale/multi-resolution methods, computational hierarchical and concurrent methods for coupled component and material responses, novel methods for notch root analysis, fracture mechanics, damage mechanics, crack growth kinetics, life prediction and durability, and prediction of stochastic fatigue behavior reflecting microstructure and service conditions) Models for early stages of fatigue crack formation and growth that explicitly consider microstructure and relevant materials science aspects Understanding the influence or manufacturing and processing route on fatigue degradation, and embedding this understanding in more predictive schemes for mitigation and design against fatigue Prognosis and damage state awareness (including sensors, monitoring, methodology, interactive control, accelerated methods, data interpretation) Applications of technologies associated with fatigue and their implications for structural integrity and reliability. This includes issues related to design, operation and maintenance, i.e., life cycle engineering Smart materials and structures that can sense and mitigate fatigue degradation Fatigue of devices and structures at small scales, including effects of process route and surfaces/interfaces.