频率选择性阻尼夹芯吸波复合材料

复合材料科学与工程 ›› 2020, Vol. 0 ›› Issue (3): 75-79.

频率选择性阻尼夹芯吸波复合材料

陈新乐, 梁森^*, 闫盛宇, 郑长升

青岛理工大学机械与汽车工程学院,青岛266520

收稿日期:2019-06-26 出版日期:2020-03-28 发布日期:2020-03-28
通讯作者: 梁森(1957-),男,教授,博导,主要从事复合材料动力学方面的研究。
作者简介:陈新乐(1994-),男,硕士,主要从事吸波复合材料方面的研究。
本文作者还有王玲。
基金资助:
国家自然科学基金(51375248);山东省与国家自然科学基金(ZR2019MEE088)

FREQUENCY SELECTIVE DAMPING SANDWICH ABSORBING COMPOSITE

CHEN Xin-le, LIANG Sen^*, YAN Sheng-yu, ZHENG Chang-sheng

School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, China

Received:2019-06-26 Online:2020-03-28 Published:2020-03-28

摘要/Abstract

摘要： 提出多层吸波预浸料层和吸波阻尼层相互嵌合的频率选择性阻尼夹芯吸波复合材料,通过规律性调节吸波预浸料层和吸波阻尼层的厚度,实现对不同频段电磁波的吸收,运用Matlab对其吸波频率选择性进行了理论分析,吸波预浸料层和吸波阻尼层的具体厚度可以根据电磁吸波频段的具体要求来设计。电磁吸波试验验证了电磁吸波频率的选择性以及理论分析方法的有效性和合理性。模态试验、自由衰减试验获得了模态参数、阻尼损耗因子随吸波预浸料厚度变化的曲线,实验数据表明:随着试件吸波预浸料层厚度的增加,电磁吸收频率发生改变,模态固有频率升高,模态阻尼比增大,阻尼损耗因子增加。

关键词: 频率选择性, 阻尼夹芯吸波复合材料, 模态参数, 阻尼损耗因子

Abstract: An embedded co-cured damping and electromagnetic absorbing composite with multi-layer absorbing prepreg layer and absorbing damping layer was proposed, and the thickness of the absorbing wave prepreg layer and the absorbing damping layer was regularly adjusted to realize different frequency bands. The electromagnetic wave absorption was theoretically analyzed by Matlab using the Matlab. The specific thickness of the absorbing prepreg layer and the absorbing damping layer can be designed according to the specific requirements of the electromagnetic absorbing band. The electromagnetic absorbing test verified the selectivity of the electromagnetic absorbing frequency and the validity and rationality of the theoretical analysis method. Modal test and free decay test obtained the curves of modal parameters and damping loss factors with the thickness of absorbing prepreg. The experimental data show that the electromagnetic absorption frequency changes with the increase of the thickness of the absorbing prepreg layer of the specimen. The natural frequency of the mode increases, the modal damping ratio increases, and the damping loss factor increases.

Key words: frequency selectivity, damping sandwich absorbing composite, modal parameter, damping loss factor

中图分类号:

TB332

陈新乐, 梁森, 闫盛宇, 郑长升. 频率选择性阻尼夹芯吸波复合材料[J]. 复合材料科学与工程, 2020, 0(3): 75-79.

CHEN Xin-le, LIANG Sen, YAN Sheng-yu, ZHENG Chang-sheng. FREQUENCY SELECTIVE DAMPING SANDWICH ABSORBING COMPOSITE[J]. Composites Science and Engineering, 2020, 0(3): 75-79.

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