In the wind tunnel facility, a test structure is often used for measuring its vibrational response to the aerodynamic excitation. A support is needed to sustaining the structure and it is mandatory that this support does not influence the vibrational energy to be measured. To this aim, the maximum amount of energy decoupling between the structure and the support is desired. This work is focused around a quick method to estimate this decoupling by using simplified models for the Turbulent Boundary Layer (TBL) excitation and for the structural response. Specifically, the Equivalent Rain-on-the-roof excitation is invoked with a Statistical Energy Analysis model for the structure. Some simple design rules are proposed and based on little information leading to foresee the difference of vibrational velocity levels between the two structural systems. A simplified test-case is used for the first investigations and a complex structure is finally conceived thinking to vibroacoustic measurements in a large wind tunnel facility. Although some results are largely expected, the global approach is promising.

在风洞设施中，通常使用测试结构来测量其对气动激励的振动响应。需要一个支撑来支撑结构，并且该支撑必须不影响要测量的振动能量。为此，需要在结构和支架之间实现最大量的能量解耦。这项工作的重点是通过使用简化的湍流边界层 (TBL) 激励和结构响应模型来估计这种解耦的快速方法。具体来说，等效的屋顶雨水激励是通过结构的统计能量分析模型调用的。提出了一些简单的设计规则，并基于很少的信息来预测两个结构系统之间的振动速度水平的差异。最初的调查使用了一个简化的测试案例，最终构想了一个复杂的结构，以在大型风洞设施中进行振动声测量。尽管在很大程度上预期了一些结果，但全球方法是有希望的。