| SMA纤维复合材料变截面板簧的固有频率特性研究 |
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| 引用本文： | 徐晓明,任勇生,杜向红.SMA纤维复合材料变截面板簧的固有频率特性研究[J].振动与冲击,2012,31(14):164-170. |
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| 作者姓名： | 徐晓明 任勇生 杜向红 |
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| 作者单位： | 山东科技大学 机械电子工程学院，山东青岛，266510 |
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| 基金项目： | 山东省自然科学基金资助项目(ZR2011EEM031) |
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| 摘 要： | 摘 要:研究了形状记忆合金（SMA）纤维混杂复合材料变截面板簧的固有频率特性。基于Brinson本构模型，讨论了SMA的受限回复特性。在建立具有SMA纤维的各向异性层合梁本构方程的基础上，利用瑞利-里兹能量法求板簧的固有频率，并给出板簧固有频率的表达式。应用MATLAB进行数值计算，得到板簧固有频率与温度、铺层角、SMA含量的关系曲线，揭示了形状记忆合金纤维复合材料变截面板簧的固有频率可调节机理。
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| 关 键 词： | 形状记忆合金 纤维复合材料 变截面板簧 瑞利-里兹法 固有频率 |
| 收稿时间： | 2011-4-11 |
| 修稿时间： | 2011-6-23 |
Natural frequency of variable cross-section leaf spring made of SMA fiber composite material |
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| XU Xiao-ming,REN Yong-sheng,DU Xiang-hong.Natural frequency of variable cross-section leaf spring made of SMA fiber composite material[J].Journal of Vibration and Shock,2012,31(14):164-170. |
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| Authors: | XU Xiao-ming REN Yong-sheng DU Xiang-hong |
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| Affiliation: | College of Mechanical and Electronic engineering., Shandong University of Science and Technology, Qingdao 266510, China |
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| Abstract: | The natural frequency of a variable cross-section leaf spring made of shape memory alloy(SMA) fibre embedded composite material was studied.The restrained recovery characteristics were discussed based on Brinson constitutive model.A procedure for solving the natural frequency of the leaf spring was given by using Rayleigh-Ritz method after deriving the constitutive equation of SMA fibre anisotropic laminated beam.The variation curves of natural frequency versus temperature,ply angle and volume fraction of SMA fiber were presented by using MATLAB numerical calculation.The adjustable mechanism of natural frequency of variable cross-section composite leaf spring embedded with SMA fiber was revealed. |
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| Keywords: | shape memory alloy(SMA) fiber composite material variable cross-section leaf spring Rayleigh-Ritz method natural frequency |
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