The structural analysis foresees the following activities:
- Preliminary optimization activities for minimum weight designs and geometrical improvements of composite and metallic structural parts (like aircrafts wing sections) by means of PANDA program
- Acquisition of CATIA drawings
- Pre-processing phase – Numerical FE modeling of primary structures and secondary structural components and/or modification of the pre-existing FE models. The FE modeling is performed starting from 3D CATIA geometries, using ALTAIR Hyperworks and I-DEAS pre-processing tools.
- Stress analysis of the structural meshed airframe parts and of the global structure. The numerical analyses are carried out with the assistance of the NASTRA elemental code NASTRAN (Nasa-Structural-Analysis). The most used solutions are:
- SOL 101 linear static analysis
- SOL 103 normal modes analysis
- SOL 145 flutter analysis
- SOL 105 buckling analysis
- SOL 106 non linear analysis
- Post-processing phase. Results visualization and analysis by means of ALTAIR Hyperview and I-DEAS post-proccessing tools
- Analysis of structural demands
- Fatigue Life Evaluation by two different approaches:
- Damage Tolerance (Nasgrow and Afgrow programs are used)
- Safe Life (Miner’s cumulative damage approach)
- FEM validation by Static and Fatigue tests
- Certification Reports in according to JAR requirements for Civil Authority approval
