Structural Dynamics with Uncertainty
The components of a structure or a machine possess various degrees of uncertainty in geometric and material properties due to manufacturing. When these components are assembled, joints provide another source of uncertainty. Loads applied to structures and machines also have uncertain elements. The dynamic behaviour of these structures and machines naturally display a variety of uncertainty levels. Cars produced on the same set of drawing and by the same machines can exhibit a certain spread of natural frequencies and the order of modes of these nominally identical structures are likely different. The uncertainty can be characterised by a probabilistic distribution or by an interval or a fuzzy representation.
This mini-symposium aims to bring together various topics of structural dynamic problems with uncertain geometric and/or material properties. Both uncertainty propagation and inverse uncertainty characterisation are relevant. One example of the former is determination of likelihood of friction-induced noise in the presence of uncertain system parameters and friction characteristics. One example of the latter is stochastic updating of a welded structure due to variability of the welds.
- Prof. Huajiang Ouyang
- Centre for Engineering Dynamics, School of Engineering, University of Liverpool.