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An interface force measurements-based substructure identification and an analysis of the uncertainty propagation

机译：基于界面力测量的子结构识别和不确定性传播分析

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Substructure-decoupling techniques are used to identify a substructure as a stand-alone system while it is coupled to a complex structure. These techniques can be used for various applications, e.g., when the substructure cannot be measured separately from the complex structure, when modal testing methods are not appropriate due to the limits of the measurement equipment and for vibration-control techniques. The complex structure consists of the unknown substructure and the remaining structure. A drawback of the available substructure-decoupling techniques is that they require a model of the remaining substructure. However, when the model cannot be calculated or (experimentally) identified, the substructure-decoupling techniques cannot be used. In this paper a new approach is presented that does not require a model of the remaining substructure, but is based on an experimental identification of the interface forces. The sensitivity of the approach to experimental errors was researched. Numerical and experimental test cases are researched.
机译：子结构去耦技术用于将子结构标识为独立系统，同时将其耦合到复杂结构。这些技术可以用于各种应用，例如，当无法将子结构与复杂结构分开进行测量时，由于测量设备的限制，模态测试方法不合适时，以及用于振动控制技术。复杂结构由未知子结构和其余结构组成。可用的子结构去耦技术的缺点是它们需要剩余子结构的模型。但是，当无法计算或无法（通过实验）确定模型时，则无法使用子结构去耦技术。在本文中，提出了一种新方法，该方法不需要剩余子结构的模型，而是基于对界面力的实验识别。研究了该方法对实验误差的敏感性。研究了数值和实验测试案例。

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