In this paper we present a method for establishing a theoretical model of a joint from the substructures and assembly frequency-response-functions (FRF) data. The identification process considers not only translational, but also rotational degrees of freedom. The validity of the proposed method is demonstrated numerically and experimentally. A combined numerical-experimental approach was used to identify the mass, stifness and damping effects of a real bolted joint.
COBISS.SI-ID: 10470683
The model of a joint is considered as a coupled dynamic stifness matrix, which generally includes six degrees of freedom. For two types of least-squares solutions the terms of use are clarified. The effect of coordinate reduction in the identification results is demonstrated numerically. Using s substructure synthesis method and the identified joint dynamic properties the assembly response is reconstructed.
COBISS.SI-ID: 10818075