复合材料夹层结构动力学特性研究进展

摘要/Abstract

摘要： 复合材料夹层结构是一类由纤维增强复合材料上下表层和芯层复合组成,具有比强度高、阻尼性能好、纤维铺层可设计、质量轻等优点的结构,常作为工程减振结构使用,研究其动力学特性对该类工程设计具有很强的指导意义。本文从夹层结构力学分析模型、芯材粘弹性材料本构模型、粘弹性夹层结构动力学特性分析方法、粘弹性复合材料夹层梁/板、离散芯材复合材料夹层结构等方面,对国内外复合材料夹层结构动力学特性研究成果进行了回顾、梳理和归纳,总结得出了不同结构动力学特性的计算方法及其局限性,指出了不同类型结构理论或数值计算存在的突破难点,以及复合材料夹层结构动力学特性未来研究的趋势。研究认为:过往,结构阻尼性能预报材料遵循不考虑频变到频变特性,逐步逼近粘弹性特性的历程,研究对象具有从规则对象到大型复杂外形结构的趋势;未来,在理论求解方面,夹层梁/板动响应封闭解还需深入研究;对于结构动态响应研究,针对自由铺层表层结构的动力学特性求解还需结合板条传递函数法进行进一步研究;在应用研究方面,以降低计算规模和难度,寻求能逼近材料力学行为且适应数值求解的材料本构模型,并相应完善数值求解方法将成为研究热点。

关键词: 复合材料, 夹层结构, 动力学特性, 研究进展

Abstract: The composite sandwich structure is composed of upper and lower layer fiber reinforced composite and core layer, which has advantages of high specific strength, good damping property, design of fiber layer and light quality. It is often used as an vibration reducing structure. The study of its dynamic characteristics is instructive for its design. In this paper, the research achievements of dynamic characteristics of composite sandwich structure at home and abroad are reviewed, which include the mechanical analysis model of sandwich structure, core viscoelastic material constitutive model, the analysis method of the viscoelastic sandwich structure dynamic characteristic, viscoelastic composite sandwich beam and plate, discrete core composite sandwich structure. The calculation method of the dynamic characteristics of different structure and these limitations are summarized, and the breakthroughs and difficulties of different types of sandwich structure theory or numerical calculation are pointed out. Finally, the trend of future research on the dynamic characteristics of composite sandwich structures is also pointed out. It is concluded that, in the past, the structure damping properties prediction followed the course of gradually approaching the viscoelastic properties of materials, from regardless of frequency to frequency. The research object has the trend from the regular object to the large complex structure. In future, in terms of theoretical solution, the dynamic response closed solution of the sandwich beam and plate needs in-depth study. In terms of the dynamic response, the dynamic characteristics of the free paving layer surface structure need to be studied with the strip transfer function method. In application research, in order to reduce the scale and difficulty of calculation, a material constitutive model that can approximate the mechanical behavior and adapt to numerical solutions must be seeked, and accordingly improve the numerical solutions, will become a research hotspot.

Key words: composite, sandwich structure, dynamic characteristics, research progress

中图分类号:

TB332

杨坤, 张玮, 杜度. 复合材料夹层结构动力学特性研究进展[J]. 玻璃钢/复合材料, 2019, 0(9): 110-118.

YANG Kun, ZHANG Wei, DU Du. THE RESEARCH PROGRESS OF DYNAMIC CHARACTERISTICS OF THE COMPOSITE SANDWICH STRUCTURE[J]. Fiber Reinforced Plastics/Composites, 2019, 0(9): 110-118.

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