Closed-form solution for thermal, mechanical, and thermo-mechanical buckling and post-buckling of SMA composite plates
Closed-form solution for thermal, mechanical, and thermo-mechanical buckling and post-buckling of SMA composite plates
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DOI：
10.1016/j.compstruct.2017.02.046
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发表时间：
2017-05-15
影响因子：
6.3
通讯作者：
Tehrani, Behrang Tavousi
中科院分区：
文献类型：
--
作者：
Kabir, Mohammad-Zaman;Tehrani, Behrang Tavousi
本文对形状记忆合金(SMA)纤维增强复合材料对称层合板的热、力学、热机械屈曲和后屈曲进行了分析研究。本研究中使用的闭合形式解是基于FSDT与Von-Karman非线性应变相结合而开发的。通过在SMA复合板的本构方程中加入一维简化的Brinson模型确定的应力恢复项来描述SMA纤维的影响。采用Galerkin方法求解非线性运动偏微分方程组，得到屈曲载荷和后屈曲路径。研究了SMA活化温度、SMA纤维体积分数、SMA预应变、双轴比等参数对材料力学性能的影响。由于回复力的产生，随着SMA纤维体积分数、激活温度或SMA预应变的增加，屈曲载荷显著提高。(C)2017爱思唯尔有限公司。保留所有权利。
In this paper, an analytical study on thermal, mechanical, and thermomechanical buckling and post-buckling of symmetric laminated composite plates reinforced with shape memory alloy (SMA) fibers are presented. The closed-form solution used in this study is developed based on the FSDT incorporated with the Von-Karman non-linear strains. The effect of SMA fibers is captured by adding a tensile recovery, stress term that determined using 1-D simplified Brinson's model, in the constitutive equations of the SMA composite plate. Galerkin technique is implemented for solving the nonlinear partial differential equations of motion to obtain buckling load and post-buckling path. The influence of several parameters such as SMA activation temperature, SMA fiber volume fraction, SMA pre-strain, biaxial ratio, etc., are studied in this work. Due to the generation of recovery force, significant improvement in buckling load is attained by increasing each of the SMA fiber volume fraction, activation temperature or SMA pre-strain. (C) 2017 Elsevier Ltd. All rights reserved.