预测纤维增强复合材料层压板固有频率振型及模态阻尼的有限元算法

林敦祥; 倪荣根

预测纤维增强复合材料层压板固有频率振型及模态阻尼的有限元算法

林敦祥¹,
倪荣根²

1.
陕西机械学院;
2.
航空工业部六二一所

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出版历程
- 收稿日期: 1983-05-27
- 刊出日期: 1986-02-15

The Finite Element Technique for Predicting the Natural Frequencies, Mode Shapes and Damping Values of Filamentary Composite Plates

Lin Dun-xiang¹,
Ni Rong-gen²

1.
Shanxi Institute of Mechanical Engineering, Xi'an;
2.
Beijing Institute of Aeronautical Materials, Beijing

摘要

摘要: 本文提供了预测纤维增强复合材料层压板固有频率、振型及模态阻尼的理论计算方法,此方法是综合了有限元法和阻尼单元模型,并考虑了横向剪应变和转动惯量的影响,本文给出了对称铺层石墨纤维及玻璃纤维复合材料层压板的理论计算结果,并给出实验数据进行对比.本文还提出一种预测复合材料层压板固有频率和阻尼的简易方法.

Abstract: This article presents the numerical method for predicting the natural frequencies, mode shapes and damping values of filamentary composite plates. This method is based on finite element technique, using damped element and allowing transverse shear deformation. For the example of this technique, the theoretical results comparing.with experimental values of carbon fibre and glass fibre reinforced plastics plates(mid-plane symmetric) are provided. The dynamic properties of these laminates are discussed. Finally, a simple graphic technique to estimate the natural frequencies and damping values is suggested.

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参考文献(15)

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