PSI - Issue 57

358 4

Laurent Dastugue et al. / Procedia Structural Integrity 57 (2024) 355–364 Michael Klein et. al./ Structural Integrity Procedia 00 (2019) 000 – 000

Fig. 4. Process step 2, 70 fatigue analysis.

The third and last step (Fig. 5) of a typical load collective process is the combination of the damage of different load levels to the total damage. The influence of the number of repetitions for the different load levels with which they occur is considered here. In the industrial example, 70 damage files must be read and processed by a script, which then writes out the total damage.

Fig. 5. Process step 3, total damage out of 70 damage levels.

For the complete process (Fig. 2) a large amount of data is frequently written out and read in. The amount of data limits the model size and extends the run time. The data organization is manual and therefore not process-safe. Individual interfaces are additional sources of error. 3. Improvements for the industrial simulation process integration To improve the process, the fatigue life analysis was integrated into the FEA solver PERMAS (see Bernd et. al. (2022), Häckh et. al. (2021)). The integration was not realized by a simple internal connection of an existing fatigue software, but by a new development of the functionality inside the software basis of the FE solver. This is the best approach to realize the significant benefits and prevents the usual simple way of software coupling which just hides