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热环境下嵌入预应变形状记忆合金丝的正交反对称复合材料层合板的声辐射

Sound Radiation of Orthogonal Antisymmetric Composite Laminates Embedded with Pre-Strained SMA Wires in Thermal Environment.

作者信息

Huang Yizhe, Zhang Zhifu, Li Chaopeng, Wang Jiaxuan, Li Zhuang, Mao Kuanmin

机构信息

State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.

出版信息

Materials (Basel). 2020 Aug 19;13(17):3657. doi: 10.3390/ma13173657.

DOI:10.3390/ma13173657
PMID:32824967
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7504033/
Abstract

The interest of this article lies in the sound radiation of shape memory alloy (SMA) composite laminates. Different from the traditional method of avoiding resonance sound radiation of composite laminates by means of structural parameter design, this paper explores the potential of adjusting the modal peak of the resonant acoustic radiation by using material characteristics of shape memory alloys (SMA), and provides a new idea for avoiding resonance sound radiation of composite laminates. For composite laminates embedded with pre-strained SMA, an innovation of vibration-acoustic modeling of SMA composite laminates considering pre-stain of SMA and thermal expansion force of graphite-epoxy resin is proposed. Based on the classical thin plate theory and Hamilton principle, the structural dynamic governing equation and the frequency equation of the laminates subjected to thermal environment are derived. The vibration sound radiation of composite laminates is calculated with Rayleigh integral. Effects of ambient temperature, pre-strain, SMA volume fraction, substrate ratio, and geometrical parameters on the sound radiation were analyzed. New laws of SMA material and pre-strain characteristics on sound radiation of composite laminates under temperature environment are revealed, which have theoretical and engineering functional significance for vibration and sound radiation control of SMA composite laminates.

摘要

本文的关注点在于形状记忆合金（SMA）复合材料层合板的声辐射。与传统通过结构参数设计来避免复合材料层合板共振声辐射的方法不同，本文探索利用形状记忆合金（SMA）的材料特性来调节共振声辐射模态峰值的潜力，为避免复合材料层合板的共振声辐射提供了新思路。对于嵌入预应变SMA的复合材料层合板，提出了一种考虑SMA预应变和石墨环氧树脂热膨胀力的SMA复合材料层合板振动声学建模方法。基于经典薄板理论和哈密顿原理，推导了热环境下层合板的结构动力学控制方程和频率方程。采用瑞利积分计算复合材料层合板的振动声辐射。分析了环境温度、预应变、SMA体积分数、基体比例和几何参数对声辐射的影响。揭示了温度环境下SMA材料和预应变特性对复合材料层合板声辐射的新规律，这对SMA复合材料层合板的振动和声辐射控制具有理论和工程实用意义。

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