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首页> 外文期刊>Composite Structures >Variable stiffness laminated composite shells - Free vibration characteristics based on higher-order structural theory
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Variable stiffness laminated composite shells - Free vibration characteristics based on higher-order structural theory

机译：变刚度层压复合材料壳-基于高阶结构理论的自由振动特性

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摘要

In this study, the free vibration characteristics of variable stiffness laminated composite shells is numerically studied using a higher-order accurate theory. The unique feature of the variable stiffness composites is that the fiber orientation within the lamina changes continuously leading to spatial variation of stiffness of the resulting laminate. A systematic parametric study is conducted to bring out the influence of fiber orientation within and across the laminae, shell geometry and the structural theory on the fundamental frequency. The influence of environmental factors such as the temperature and the presence of moisture is also considered. It is inferred that the spatial variation of stiffness due to curvilinear fibres introduces additional flexibility in designing structures made of such materials.
机译：在这项研究中，使用高阶精确理论对可变刚度层压复合材料壳的自由振动特性进行了数值研究。可变刚度复合材料的独特特征是，薄片内的纤维取向连续变化，从而导致所得层压材料的刚度在空间上变化。进行了系统的参数研究，以揭示纤维在薄片内部和整个薄片中的取向，壳的几何形状和结构理论对基频的影响。还应考虑环境因素（例如温度和水分的存在）的影响。可以推断出，由于曲线纤维而引起的刚度的空间变化在设计由这种材料制成的结构时引入了额外的灵活性。

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