Component replacement TPA: A transmissibility-based structural modification method for in-situ transfer path analysis

In-situ transfer path analysis is a diagnostic method used to analyse the propagation of noise and vibration through complex built-up structures. Its defining feature independent characterisation an assembly’s active components (i.e. sources) by their blocked forces. This enables downstream structural modification assembly without affecting sources’ operational characteristics. In practical engineering structures, however, there often need alter or replace that reside within source, for example resilient mounts. An upstream this sort would force thus invalidate any response predictions made thereafter. Hence, alternative approach required. present paper transmissibility-based introduced. We derive set equations relate forward functions obtained from initial assembly, those modified assembly. Exact formulations are provided, together with first zeroth order approximations resiliently coupled These component replacement expressions verified numerical examples.