PSI - Issue 38

Hubert Blondet et al. / Procedia Structural Integrity 38 (2022) 526–537 Hubert Blondet, Kamilia Barthoux/ Structural Integrity Procedia 00 (2021) 000 – 000

528

3

Each step is described in the paragraphs below. 2.1 Thermomechanical Simulations

Following graphs describe the complete method to calculate stress levels on cylinder head for each engine speed / engine load pair: several types of simulations are necessary to achieve these analyses: 1D combustion simulation, 3D FEA combustion simulation, 3D FEA thermal and thermo-mechanical simulations.

Figure 3: Global simulation process

The following figure describe the details of the methodology for the thermomechanical simulation itself, realized with Abaqus:

Figure 4: detailed process for 3D thermomechanical Simulations

Stress levels used in the damage analysis are extracted from the thermal + PCP steps and also the idle step.