SISTEM Finite Element Model

Due to symmetry of the SISTEM inflatable tank, only a quarter of the entire geometry was modelled. The image (left) shows the portion of the inflatable tank that has been discretised by means of Non Linear finite elements - over 474000 elements were used in this model.

The second image (right) shows the contact zones that were used in the Non Linear Finite Element Modelling. 

Areas which are in contact with one another and can also move over one another are modelled as parts in contact.

The contact body pairs are listed below and the contact surfaces are showed in the image, marked in red:

1. Upper Dome – Fluid Fitting
2. Pins – Meridian Belts
3. Meridian Belts - External Hoop Belts
4. Pins – Inserts
5. Meridian Belts – Domes (Upper and Lower)
6. Internal - External Hoop belts