A large number of dynamic problems in various areas of mechanical engineering are determined by nonlinearities in the structure and, in particular, in the contact. On the one hand, these contact conditions have a strong influence on the mechanism of self-oscillation of vibrations, e.g. in vehicle drives or deep drilling processes. On the other hand, the process in the contact also influences the process itself, e.g. in grinding or bearings. The underlying analysis methods used in this research area are not limited to mechanical systems, but can also be applied to cell biology issues.
The fact that friction is still poorly understood, despite its high practical relevance and numerous research projects, does not only apply to dry contacts. Lubricants, which are primarily used to reduce wear or transport heat, have their own complexities and a better understanding of them can make a significant contribution to the development process.
The amount of fluid in the gap is particularly important. Several studies have shown that a significant lubricating effect can be achieved with very small amounts of fluid. The underlying phenomena are being investigated by modelling and experimentation in a number of projects. The mathematical analogy to narrow gap flow is the basis for research into the description of adhesive flow during pressing. The main aim of all this work is to reduce the amount of fluid used, thereby contributing to environmentally sustainable solutions.