SDC Verifier benefits in fatigue
Normally the fatigue calculation of your construction is extensive and complicated. You need information about the working conditions, loading history and material data. This is to be prepared on top of your FE model with loads, boundary conditions, load combinations, load factors and safety factors. Next up is the recognition and classification of all the details within the model. Recognition defines sections of base material, welds or free edges. And then on each of these, normally based on a specific standard, the accompanied fatigue resistance classification is to be defined. If everything is in order you can start the actual verification of the fatigue damage by translating stress results and perform calculations according to the standards and rules.
SDC Verifier can help you with all these steps.
- The basis of the calculation.
SDC Verifier offers the engineer a user-friendly interface for combining the loads into a matrix of load sets and groups, taking into account all the safety factors and partial load factors. Not only does this simplify the processing of a large amount of load history data, but it also shortens the solution time.
- The recognition and classification.
An excellent and efficient weld finder is used to easily recognize the areas of interest. After the recognition is complete, the classification must be determined for all welds in the model. Note, you still need to specify which classification to accompany which weld section in the model. Hence, as an Engineer you will need some know how of the rules in the standards. But the process within SDC is straightforward and automates most of the steps for you. SDC’s selector helps creating components for all welds, weld intersections, weld tips, etc. The process automatically reorients the stresses in the welding directions so different classifications can be made along the weld, perpendicular and parallel to the weld and for shear.
- The verification of the construction.
After all of the preparations above, SDC Verifier performs the fatigue check. This is according to a standard of your choice from the Offshore, Heavy lifting, Heavy machinery, Maritime, Shipbuilding and Civil industries. The following engineering standards are currently available:
- Eurocode 3 (EN1993-1-9, 2005)
- EN 13001 (2018)
- FEM 1.001 (3rd, 1998)
- DNV-RP-C203 (2016)
- DIN 15018 (1984)
- FKM Guidelines