Requirements for sealed connections have increased steadily in recent years. New or updated regulations (e.g. Pressure Equipment Directive) and the national and European regulations based on them require a more comprehensive level of verification.
In addition, the requirements with regard to environmental protection have been tightened (e.g. by the TA Luft in Germany), with the focus on limiting emissions. In this context, guidelines call for "professional design" and "the use of suitable gasket characteristics".
Within the framework of the overall concept presented for a tight flange, the mathematical verification is of central importance. For the calculation of flanged connections, we offer analytical methods according to DIN EN 1591-1 or according to KTA 3211.2 as well as detailed finite element analysis (FEA).
Both flange connections with the seal in the main force flow and with the seal in the force shunt circuit can be processed.
The main task of any calculation is to determine the required assembly bolt force. This value is absolutely essential, whether it is a standard connection or a special design. Without this value (or the specification of a corresponding tightening torque), reliable assembly is not possible.
To ensure safe operation, it is necessary to limit the stresses that occur:
In addition, sufficient surface pressure of the seal must be guaranteed during operation:
For this purpose, we have developed the Software TEMESfl.cal.
Of course we do use our software to perform flange calculation services. In this context, we also use finite element analysis programs. This is particularly useful where complex special designs are concerned, where the analytical calculation processes approach their limits.