| 非对称铺设SMA层的复合材料梁在热荷载作用下的变形分析 |
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| 引用本文： | 李世荣,李志伟,滕兆春. 非对称铺设SMA层的复合材料梁在热荷载作用下的变形分析[J]. 兰州理工大学学报, 2009, 35(5) |
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| 作者姓名： | 李世荣 李志伟 滕兆春 |
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| 作者单位： | 兰州理工大学,理学院,甘肃,兰州,730050;兰州理工大学,理学院,甘肃,兰州,730050;兰州理工大学,理学院,甘肃,兰州,730050 |
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| 基金项目： | 国家自然科学基金，甘肃省自然科学基金 |
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| 摘 要： | 基于几何非线性理论,提出一类偏心铺设的形状记忆合金(SMA)复合材料梁的数学模型,建立梁在温度载荷作用下的非线性弯曲控制方程,应用打靶法进行数值求解,得到均匀加热下两端不可移简支SMA层合梁的热弯曲数值解.给出具体算例的平衡构形和平衡路径,并分析和讨论SMA的几何和物理参数对梁变形的影响.结果表明梁在升温的一开始就发生变形,升温过程中随着SMA的相变,变形趋势加剧,通过改变SMA的几何、物理参数可以调整梁的变形.
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| 关 键 词： | 形状记忆合金 复合材料梁 打靶法 热弯曲 |
Deformation analysis of composite beam with asymmetrically paved SMA-layer subjected to thermal load |
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| LI Shi-rong,LI Zhi-wei,TENG Zhao-chun. Deformation analysis of composite beam with asymmetrically paved SMA-layer subjected to thermal load[J]. Journal of Lanzhou University of Technology, 2009, 35(5) |
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| Authors: | LI Shi-rong LI Zhi-wei TENG Zhao-chun |
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| Affiliation: | LI Shi-rong,LI Zhi-wei,TENG Zhao-chun(School of Science,Lanzhou Univ.of Tech.,Lanzhou 730050,China) |
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| Abstract: | The mathematical model of a shape memory alloy(SMA) composite beam was presented.Based on an accurate geometrically nonlinear theory,the governing equations of nonlinear thermal bending and buckling of a beam subjected to a temperature rise were derived.By using the shooting method to solve the corresponding nonlinear boundary-value problem,numerical solutions were obtained for the SMA composite beam with its both ends being immovably and simply supported under uniform temperature rise.The equilibrium paths... |
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| Keywords: | shape memory alloy(SMA) composite beams shooting method thermal bending |
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