The mechanical performance of these components relies on the properties of pressboard-based components such as winding tables, pressrings, and spacers.
These components are subjected to a variety of mechanical solicitation ranging from short high load peaks, to vibrations and constant compressive loads. In addition, the combination of high temperature and moisture contribute to accelerate ageing of cellulose-based materials. It is clear that all these factors pose a threat to the overall mechanical performance of pressboard in a power transformer. It is therefore important to be able to foresee the critical situations that might be caused by one or by a combination of the aforementioned factors. The detailed material modeling of pressboard can significantly improve the readiness to tackle negative events thus improving the reliability and service life of transformers.