The pipe flange design method to EN codes (i.e. strain-based) represents a new approach to flange analysis and design. This Pipemill program is included to provide an alternative and potentially superior method to the traditional one found in ASME VIII / PD 5500.
Currently, integral pipe flanges of all types with flat or ring type joint gaskets may be analysed.
Pressure, external bending and axial forces at the flange are all taken into account in the program (detail, right, of ring joint dimensions used as part of the input data).
The strain-based analysis also allows for elasticity of the entire flange, bolt and gasket assembly.
Prevention of flange leakage is a paramount criterion.
Screen and printed results are limited to pertinent data, helpful scale plots and component weights. Angular deflection of flange faces under load, and resulting edge clearance, are presented.
The strain-based analysis method is mathematically complex. It is not feasible to present on screen or hard copy all the intermediate steps leading to the final results.