铺层角度对复合材料翼板水动力特性影响分析

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英文篇名：Numerical investigation of the effect of ply orientation on the mechanical characteristics of a composite wing 作者：丁永乐 ; 宋保维 ; 王鹏 英文作者：DING Yongle;SONG Baowei;WANG Peng;School of Marine Science and Technology, Northwestern Polytechnical University; 关键词：复合材料 ; 翼板 ; 力学性能 ; CFD/FEM流固耦合 ; 铺层角度 ; 弯扭效应 英文关键词：composite material;;flexible wing;;mechanical characteristics;;CFD/FEM fluid-structure interaction;;ply orientation;;bend-twist coupling 中文刊名：功能材料 英文刊名：Journal of Functional Materials 机构：西北工业大学航海学院; 出版日期：2019-05-30 出版单位：功能材料 年：2019 期：05 基金：国家自然科学基金资助项目(51375389) 语种：中文; 页：96-100 页数：5 CN：50-1099/TH ISSN：1001-9731 分类号：U661;TB381

摘要

复合材料因其弯扭耦合效应、自适应等特性常被作为智能材料应用于水下结构以提升其性能。采用CFD/FEM流固耦合数值方法,以水下翼板为例,研究了复合材料铺层角度对其宏观力学性能的影响规律,揭示了材料的弯扭耦合效应以及减阻特性与铺层角度间的内在联系。结果表明,小攻角下,铺层角对复合材料翼板力学性能较小;大攻角下,材料铺层角度对其弯扭耦合效应影响明显,且合适的铺层角度能有效的减少翼板阻力;材料铺层角度方向与应力集中区呈一致性。
        Composite materials, such as CFRP, are used as smart materials in underwater structures for its bend-twist coupling properties. In this paper, the CFD/FEM coupling fluid-structure method was used to investigate relationship between the ply orientation and the bend-twist coupling and the drag reduction properties. The results show that influence of ply orientation on the composite wing mechanical properties was negligible with small attack angle and significant with large attack angle. Appropriate ply orientation could effectively reduce drag force. The stress concentration area was consistent with ply orientation direction.

引文

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