A periodic micromechanical model for the rate- and temperature-dependent behavior of unidirectional carbon fiber-reinforced PVDF

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Reinforced Plastics and Composites Pub Date : 2024-07-23 DOI:10.1177/07316844241266012

Tom Lenders, Joris JC Remmers, Tommaso Pini, Peter Veenstra, Leon E Govaert, Marc GD Geers

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引用次数: 0

Abstract

The rate- and temperature-dependent mechanical behavior of unidirectional carbon fiber-reinforced polyvinylidene fluoride (PVDF) is investigated through uniaxial tension and compression experiments under various off-axis loading conditions. To improve the understanding of the behavior of the composite, a 3D micromechanical model is developed. Microscopic analyses are used to characterize the geometrical properties of the UD composite at the fiber length-scale. These properties are used to construct a periodic 3D representative volume element (RVE). In combination with periodic boundary conditions, uniaxial macroscopic deformation (in any possible direction) is applied to the RVE to accurately and efficiently model off-axis loading. The rate- and temperature-dependent behavior of the PVDF matrix is accurately described using an elasto-viscoplastic constitutive model. The finite element simulations of uniaxial tension and compression tests are compared to the experimental data and the micromechanical response is analyzed. The micromechanical model accurately describes the rate-dependent macroscopic behavior of unidirectional carbon fiber-reinforced PVDF for various off-axis loading directions at different temperatures. Analysis of the local matrix response in the RVE reveals the influence of the matrix on the macroscopic behavior of the composite.

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单向碳纤维增强 PVDF 随速率和温度变化的周期性微机械模型

通过各种离轴加载条件下的单轴拉伸和压缩实验，研究了单向碳纤维增强聚偏二氟乙烯（PVDF）随速率和温度变化的力学行为。为了加深对复合材料行为的理解，开发了一个三维微观力学模型。微观分析用于描述 UD 复合材料在纤维长度尺度上的几何特性。这些特性用于构建周期性三维代表体积元素（RVE）。结合周期性边界条件，将单轴宏观变形（任何可能的方向）应用于 RVE，以准确有效地模拟离轴加载。PVDF 矩阵随速率和温度变化的行为是通过弹塑性-粘塑性构成模型精确描述的。单轴拉伸和压缩试验的有限元模拟与实验数据进行了比较，并分析了微机械响应。该微观力学模型准确地描述了单向碳纤维增强 PVDF 在不同温度、不同离轴加载方向下与速率相关的宏观行为。对 RVE 中局部基体响应的分析揭示了基体对复合材料宏观行为的影响。

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

Journal of Reinforced Plastics and Composites 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.50%

发文量

审稿时长

1.3 months

期刊介绍： The Journal of Reinforced Plastics and Composites is a fully peer-reviewed international journal that publishes original research and review articles on a broad range of today''s reinforced plastics and composites including areas in: Constituent materials: matrix materials, reinforcements and coatings. Properties and performance: The results of testing, predictive models, and in-service evaluation of a wide range of materials are published, providing the reader with extensive properties data for reference. Analysis and design: Frequency reports on these subjects inform the reader of analytical techniques, design processes and the many design options available in materials composition. Processing and fabrication: There is increased interest among materials engineers in cost-effective processing. Applications: Reports on new materials R&D are often related to the service requirements of specific application areas, such as automotive, marine, construction and aviation. Reports on special topics are regularly included such as recycling, environmental effects, novel materials, computer-aided design, predictive modelling, and "smart" composite materials. "The articles in the Journal of Reinforced Plastics and Products are must reading for engineers in industry and for researchers working on leading edge problems" Professor Emeritus Stephen W Tsai National Sun Yat-sen University, Taiwan This journal is a member of the Committee on Publication Ethics (COPE).