New modelling approach for evaluating shaft seals

 Due to their size and complexity, the components used to seal the shafts found in ships are highly sophisticated. While they are expected to be extremely robust and reliable, dynamic processes in the sealing systems sometimes lead to surges in pressure that may damage the seals or result in adverse conveyor motions. The overall objective of development projects with partners from the maritime industry is the simulation and in-depth examination of these dynamic effects.

The radial shaft seal is the most important element of a sealing system. A high level of expertise is required to design such components, in particular those that are used to seal the shafts found in ships. This concerns both the fine-tuning of the mechanical characteristics and the identification of a suitable sealing material. In order to simulate the entire sealing system realistically, the first step is to develop a suitable modelling approach for the sealing ring.

The mechanical behaviour of the seal is analyzed in detail with the help of FEM calculations of the sealing profile, in order to create a suitable model structure. The model is then created in the SimulationX simulation environment with some of its parameters taken directly from the geometry and/or from the installation conditions. Further parameters are derived from the results of the FEM calculations. This approach makes complex parameterization measurements unnecessary.

Dichtung von BVI