各向异性辅助复合材料层压板:极性方法

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES Journal of Composite Materials Pub Date : 2024-05-21 DOI:10.1177/00219983241256335
Paolo Vannucci
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引用次数: 0

摘要

本文研究了如何获得各向异性的赋形复合材料层压板的问题,即至少在某些方向上具有负泊松比。特别是,本文考虑了通过堆叠单向相同层板获得辅助eticity 的可能性。研究表明,如果层板由各向同性的基体和纤维组成,那么除非基体和纤维中至少有一个本身是各向同性的,否则不可能获得完全辅助正交层板,即每个方向都是辅助的。此外,还说明了在成分的机械特性和纤维的体积分数方面,制造单向层压板的条件是什么,通过这些单向层压板可以实现某些方向的负泊松比层压板。此外,还对几种现有材料进行了研究。所有分析均采用极性形式主义,这对研究平面各向异性问题非常有效。
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Anisotropic auxetic composite laminates: A polar approach
The problem of obtaining anisotropic auxetic composite laminates, i.e. having a negative Poisson’s ratio for at least some directions, is examined in this paper. In particular, the possibility of obtaining auxeticity stacking uni-directional identical plies is considered. It is shown that if the ply is composed by isotropic matrix and fibers, then it is impossible to obtain totally auxetic orthotropic laminates, i.e. auxeticity for each direction, unless at least one among matrix and fibers is auxetic itself. Moreover, it is shown what are the conditions, in terms of the mechanical properties of the constituents and of the volume fraction of the fibers, to fabricate uni-directional plies with which to realize laminates having a negative Poisson’s ratio for some directions. Several existing materials are also examined. All the analysis is done using the polar formalism, very effective for the study of plane anisotropic problems.
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来源期刊
Journal of Composite Materials
Journal of Composite Materials 工程技术-材料科学:复合
CiteScore
5.40
自引率
6.90%
发文量
274
审稿时长
6.8 months
期刊介绍: Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).
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