At the high-tech product design stage, one of the crucial steps represents the vibroacoustic optimization analyses. The modular structure concept is becoming more and more important in product development area. For that reason the most advanced segmental methods are often used for predicting the structure response. The transfer path analysis method enables the evaluation of sound and vibration response of the system based on synthetic collection of forces substituting the real forces at real operation. In this thesis the commonly used techniques for efficient experimental implementation of the transfer path methods are presented together with means needed for appropriate validation of controllability and observability of the contact methods for identifying poorly conditioned admittance matrix, reduction techniques to provide the collection of linearly independent forces and regularization techniques for minimizing the noise influence on the calculated forces. At the same time, the linear dependence of the calculated forces, the influence of an overdeterminacy on the inverse problem and the influence of admittance matrix rank are characterised. The methodology presented in this thesis was demonstrated on a laboratory structure assembled of two substructures coupled by rubber joints.
|
