A Partial-Periodic Model for Predicting Structural Stiffness of Composite Laminate Beam Structures

IF 2.7 3区 工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Zhi Sun, Bingyi Liang, Shanshan Shi, Yichao Zhu, Xu Guo
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Abstract

A partial-periodic model is proposed for predicting structural properties of composite laminate structures. The partial-periodic model contains periodic boundary conditions in one direction or two directions, and free boundary condition in other directions. In the present study, partial-periodic model for composite laminate beam structures is particularly studied. Three-point bending experiments for laminate beam specimens with different laying parameters are firstly used to verify the present partial-periodic model. In addition, a detailed finite element method (FEM) model is also used to further quantitatively compare with the present partial-periodic model for composite laminate beams with different laying parameters. The results indicate that the proposed partial-periodic model is capable of providing accurate predictions in most cases. The computational time cost of the proposed partial-periodic model is much lower than that of the detailed FEM model as well. Convergence studies are also conducted for the present partial-periodic model with different model sizes and element sizes. It is suggested that the proposed partial-periodic model has the potential to be used as an accurate and time-saving tool for predicting the structural properties of composite laminate beam structures.

Abstract Image

Abstract Image

复合材料层合梁结构刚度预测的部分周期模型
提出了一种预测复合材料层合结构结构性能的部分周期模型。部分周期模型在一个方向或两个方向上包含周期边界条件,在其他方向上包含自由边界条件。本文重点研究了复合材料层合梁结构的部分周期模型。首先对不同铺设参数的层合梁试件进行三点弯曲试验,验证了所提出的部分周期模型。此外,还采用了详细的有限元方法(FEM)模型,对不同铺设参数的复合材料层合梁的部分周期模型进行了进一步的定量比较。结果表明,所提出的部分周期模型能够在大多数情况下提供准确的预测。所提出的部分周期模型的计算时间也比详细有限元模型的计算时间要短得多。本文还对不同模型尺寸和单元尺寸的部分周期模型进行了收敛性研究。结果表明,所提出的部分周期模型可作为预测复合材料层合梁结构性能的一种准确、省时的工具。
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
Acta Mechanica Solida Sinica
Acta Mechanica Solida Sinica 物理-材料科学:综合
CiteScore
3.80
自引率
9.10%
发文量
1088
审稿时长
9 months
期刊介绍: Acta Mechanica Solida Sinica aims to become the best journal of solid mechanics in China and a worldwide well-known one in the field of mechanics, by providing original, perspective and even breakthrough theories and methods for the research on solid mechanics. The Journal is devoted to the publication of research papers in English in all fields of solid-state mechanics and its related disciplines in science, technology and engineering, with a balanced coverage on analytical, experimental, numerical and applied investigations. Articles, Short Communications, Discussions on previously published papers, and invitation-based Reviews are published bimonthly. The maximum length of an article is 30 pages, including equations, figures and tables
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