Vibration of laminated composite plates embedded with shape memory alloy at elevated temperatures
Vibration of laminated composite plates embedded with shape memory alloy at elevated temperatures
复制标题
嵌入形状记忆合金的层合复合板在高温下的振动
DOI：
10.1117/12.388179
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
C. Mei
中科院分区：
文献类型：
--
作者：
B. Duan;M. Tawfik;Sylvain N. Goek;J. Ro;C. Mei
提出了嵌入形状记忆合金 (SMA) 的复合板在高温下自由振动行为的有限元公式和求解程序。公式中考虑了 MA 和复合基体随温度变化的材料特性，以及大热变形导致的几何非线性。求解过程包括两个步骤：首先确定大热变形，然后对热屈曲平衡位置进行自由振动分析。给出了混合复合材料板的示例，以显示最低频率随温度的变化以及 SMA 对高温下固有频率的影响。讨论了使用 SMA 在频率转向和声波疲劳方面的潜在应用。
A finite element formulation and solution procedure for the free vibration behavior of composite plates with embedded shape memory alloy (SMA) at elevated temperatures is presented. The temperature-dependent material properties of MA and composite matrix, and the geometrical nonlinearity due to large thermal deflection are considered in the formulation. The solution procedure consists of two steps: large thermal deflection is determined first, then followed by the free vibration analysis about the thermally buckled equilibrium position. Examples of hybrid composite plates are given to show the variation of lowest few frequencies versus temperature and the influence of SMA on the natural frequencies at elevated temperatures. Potential applications to frequency turning and sonic fatigue using SMA are discussed.