Predicting vibration levels on an experimental test case by using invariant loads (e.g. blocked forces) as source characterization

摘要

Component-based TPA is a relatively new TPA approach that allows to characterize a structureborne source component independently from the receiver structure (as opposed to classical TPA) and to predict its behavior when coupled to different receivers. This approach would allow to frontload the development process and considerably increase the flexibility during the design process. However, there are a number of challenges affecting its applicability, such as a proper modelling of the coupling degrees of freedom at the interface, the difficulty to access the interface connection points and the conditioning of the equations. A number of innovative methods were developed to address these issues, that will be investigated by means of measurements on a laboratory test bench. A systematic analysis will be performed through which the accuracy and applicability of the component-based TPA will be analyzed and assessed.