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首页> 外文期刊>Composite Structures >Numerical prediction and experimental validation of free vibration responses of hybrid composite (Glass/Carbon/Kevlar) curved panel structure
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Numerical prediction and experimental validation of free vibration responses of hybrid composite (Glass/Carbon/Kevlar) curved panel structure

机译：混合复合（玻璃/碳/芳纶）弯曲面板结构自由振动响应的数值预测和实验验证

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摘要

This research reveals the effect of hybridisation numerically for different advanced fibre (Glass/Carbon/Kevlar) reinforcement in polymer matrix composite on the eigen-characteristics. The higher-order displacement polynomial kinematics and curvature effect have been utilized for the modelling of the hybrid composite component including the necessary shear deformation. The adequate solution accuracy of the derived hybrid composite mathematical formulation has been examined by comparing with the first-five modal data considering the effect of aspect ratios, numbers of layers and the fibre types with the experimental data. The eigen-frequency solutions are obtained using an isoparametric linear finite element formulation in association with experimental properties for the hybrid composite. Also, the modal responses are obtained via a simulation model considering the individual layer effects of each fibre through the static-structural module of the commercial package (ANSYS). Finally, the influential structural design parameters (thickness ratio and constraint conditions) affecting the frequency characteristics including the geometrical shape are examined using the present numerical model. The computational results reveal that the numbers of layer and type of fibre affect the frequency parameter due to the variation in their stiffness.
机译：这项研究揭示了数值杂交对于聚合物基复合材料中不同的高级纤维（玻璃/碳/芳纶）增强物的本征特性的影响。高阶位移多项式运动学和曲率效应已用于混合复合材料部件的建模，包括必要的剪切变形。通过与长宽比，层数和纤维类型的影响与实验数据进行比较，通过与前五个模态数据进行比较，检验了派生的混合复合数学公式的适当求解精度。使用等参线性有限元公式以及杂化复合材料的实验特性，可以获得特征频率解。此外，模态响应是通过仿真模型获得的，该模型考虑了通过商用包装（ANSYS）的静态结构模块考虑到每根光纤的单独层效应。最后，使用本数值模型研究了影响频率特性（包括几何形状）的结构设计参数（厚度比和约束条件）。计算结果表明，纤维的层数和类型由于其刚度的变化而影响频率参数。

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