论文标题
基于FE-RRM的耦合数值模型，用于分析由于TBL激发而通过僵硬的双壁面板分析能量传递
A coupled FE-RRM-based numerical model for analysis of energy transmission loss through stiffened double-wall panel due to TBL excitation
论文作者
论文摘要
我们提出了一个完全耦合的数值模型，以使用有限元（FE）框架来预测通过湍流边界层（TBL）激发的双层柔性飞机面板的传递。在面板上采用了Mindlin一阶剪切变形模型，使用有限的元件辐射电阻矩阵（FE-RRM）方法开发了TBL结构 - 声学耦合模型，以通过具有可变厚度和耐加速度方向的双层面板预测传输损失（TL）。该模型还能够捕获正性层层序列和频率依赖性结构阻尼在预测TL方面的贡献。因此，提出了一个新的数值模型，该模型使设计人员在面板叶子的数量，边界和飞机面板式式式面板系统的稳定性方面具有更大的灵活性，该设计人员由各向同性或正性层压板制成。
We propose a fully coupled numerical model to predict energy transmission through a turbulent boundary layer (TBL) excited stiffened double-leaf flexible aircraft panel using a finite element (FE) framework. Mindlin first order shear deformation model is adopted for the panels and a TBL-structure-acoustic coupling model is developed using finite element-radiation resistance matrix (FE-RRM) approach to predict the transmission loss (TL) through double-leaf panels with variable thickness and stiffener orientation. The model is also capable to capture the contribution of orthotropic lamina sequence and frequency-dependent structural damping in predicting the TL. Thus, a new numerical model is proposed that enables the designers with greater flexibility in terms of the number of panel leaves, boundary, and stiffening condition of the aircraft panel-cavity-panel system, made of isotropic or orthotropic laminates.
