应变率对动态载荷下碳纤维增强聚合物不可逆损伤行为的影响研究

IF 4 2区 工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Jordan Berton, Fabien Coussa, Julien Berthe, Eric Deletombe, Mathias Brieu
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引用次数: 0

摘要

研究了应变速率对碳纤维增强聚合物(CFRPs)在动态拉伸加载过程中不可逆变形和损伤演化的影响。对T700/M21 CFRP试件在不同应变速率下(10−4 ~ 1 m.s−1)进行的试验表明,宏观不可逆变形随应变速率不变,而粘弹性对材料的非线性行为有显著影响。通过区分可逆应变和不可逆应变,我们发现损伤积累并不表现出明显的应变速率依赖关系,这与一些现有文献相反。这项工作强调需要超越宏观观察的先进分析技术,以充分理解动态条件下控制CFRP行为的复杂、速率依赖机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of strain rate effects on the irreversible and damageable behavior of carbon fiber reinforced polymers under dynamic loading
This study explores the effects of strain rate on the irreversible deformation and damage evolution in carbon fiber reinforced polymers (CFRPs) during dynamic tensile loading. Experiments conducted on T700/M21 CFRP specimens at varying strain rates (10 −4 to 1 m.s −1 ) indicate that macroscopic irreversible deformation is invariant with strain rate, while viscoelasticity significantly influences the material’s nonlinear behavior. By differentiating between reversible and irreversible strains, we find that damage accumulation does not exhibit a clear strain rate dependency, contrary to some existing literature. This work emphasizes the need for advanced analysis techniques beyond macroscopic observations to fully understand the complex, rate-dependent mechanisms governing CFRP behavior under dynamic conditions.
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来源期刊
International Journal of Damage Mechanics
International Journal of Damage Mechanics 工程技术-材料科学:综合
CiteScore
8.70
自引率
26.20%
发文量
48
审稿时长
5.4 months
期刊介绍: Featuring original, peer-reviewed papers by leading specialists from around the world, the International Journal of Damage Mechanics covers new developments in the science and engineering of fracture and damage mechanics. Devoted to the prompt publication of original papers reporting the results of experimental or theoretical work on any aspect of research in the mechanics of fracture and damage assessment, the journal provides an effective mechanism to disseminate information not only within the research community but also between the reseach laboratory and industrial design department. The journal also promotes and contributes to development of the concept of damage mechanics. This journal is a member of the Committee on Publication Ethics (COPE).
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