| 碳纤维复合材料板振声特性分析及优化 |
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| 引用本文： | 刘成武、郭小斌.碳纤维复合材料板振声特性分析及优化[J].福建工程学院学报,2020,0(6):518-523. |
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| 作者姓名： | 刘成武、郭小斌 |
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| 作者单位： | 福建工程学院机械与汽车工程学院 |
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| 摘 要： | 为了研究结构几何参数及铺层参数改变对碳纤维复合板的振动声辐射特性影响，利用有限元/边界元法计算了碳纤维复合材料板的振动声辐射特性参数，并以降低结构振动噪声为目标对其进行了优化分析。研究表明:加筋、增加筋数和增加铺设层数能降低结构的辐射噪声。3 种铺层角度中，0°/90°/45°]辐射噪声最低。在第一阶波峰处，优化后声功率值相比优化前减少了大约4 dB。研究结果可为降低结构辐射噪声提供理论依据。
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| 关 键 词： | 碳纤维复合材料板 振动声辐射 辐射声功率 辐射效率 优化 |
Analysis and optimization of vibration and acoustic characteristics of 〖JZ〗carbon fiber composite plates |
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| LIU Chengwu,GUO Xiaobin.Analysis and optimization of vibration and acoustic characteristics of 〖JZ〗carbon fiber composite plates[J].Journal of Fujian University of Technology,2020,0(6):518-523. |
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| Authors: | LIU Chengwu GUO Xiaobin |
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| Institution: | School of Mechanical and Automotive Engineering, Fujian University of Technology |
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| Abstract: | The influence of the changes in structural geometric parameters and laminate parameters on the vibration and acoustic radiation of the carbon fiber composite plate was investigated herein. Through the finite element/boundary element method, the characteristic parameters of the vibration and acoustic radiation of the carbon fiber composite plate was calculated, and optimization analysis was carried out in order to reduce the vibration and noise of the structure. The study shows that the radiation noise of the structure can be reduced by increasing the number of reinforcing bars and ply layers. 0°/90°/45°] attains the lowest radiation noise out of the three ply angles. At the first wave crest, the value of the acoustic radiation power after optimization is reduced by approximately 4 dB compared with that before optimization. The results can provide theoretical basis for reducing structural radiation noise. |
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| Keywords: | carbon fiber composite plates vibration acoustic radiation acoustic radiation power radiation efficiency optimization |
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