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材料工程  2015 

纤维体积分数对三维编织复合材料T型梁模态性能的影响

DOI: 10.11868/j.issn.1001-4381.2015.09.013, PP. 80-86

Keywords: 三维四向编织,复合材料T型梁,模态分析

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Abstract:

采用悬臂梁自由衰减振动的实验方法研究了碳纤维三维四向编织复合材料T型梁的模态性能,分析了纤维体积分数对其固有频率和阻尼的影响。将实验得到的固有频率结果与有限元得到的固有频率结果作了对比。结果表明三维四向编织复合材料T型梁的模态性能与激振点位置无关。且其固有频率随纤维体积分数的增大而提高,阻尼性能随纤维体积分数的增大而降低。通过阵型可以准确判断T型梁固有频率的阶数。实验结果与计算结果相一致。

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