PSI - Issue 75

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia (2025) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 75 (2025) 334–343

Fatigue Design 2025 (FatDes 2025) Fatigue Analysis as Standard Application for Every Structural Analysis with FEM Laurent Dastugue a , Eric Heinemeyer b , Michael Klein b,*

a INTES France, 40, Rue Sadi Carnot, 78120 Rambouillet, France b INTES GmbH, Breitwiesenstrasse 28, 70565 Stuttgart, Germany

Abstract Fatigue analysis based on stress calculation enhances traditional finite element strength analysis, offering deeper insights for lightweight component design. This approach is now fully integrated into a general FEM HPC software, enabling simplified access and efficient use for larger models.

Fig. 1. Solver integrated fatigue with one common database. Integration within the FEM solver (Fig. 1) allows direct output of fatigue damage alongside stress results, with minimal additional input or computation time. An SN curve generator based on the FKM guideline automates material data input, streamlining the process. By eliminating the need for separate software and eliminating data transfers by using one common database, the integrated method accelerates product development and improves quality. It also saves disk space and computing time through optimized HPC data structures of the FEM solver, enabling the analysis of more detailed models. The benefits — ease of use, speed, and efficiency — are demonstrated through an industrial example involving a truck chassis, using the commercial FEM solver PERMAS.

* Corresponding author. Tel.: +49-711-78499-18 E-mail address: Klein@INTES.de

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the Fatigue Design 2025 organizers

2452-3216 © 2025 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of Dr Fabien Lefebvre with at least 2 reviewers per paper 10.1016/j.prostr.2025.11.034