Students are obliged to regularly and actively participate in classes and complete assigned tasks (seminars) on time. The exam is taken in writing and orally. The final grade is obtained as a result of the written and oral part and a successfully defended seminar.

Grading and evaluation of student work over the course of instruction and at a final exam:

Upon successful completion of the course, students will be able to (learning outcomes):

1 . Apply adopted knowledge to calculate structural strength of aerospace structures

2 . Implement adequate structural modelling techniques by using modern computer tools (ANSYS)

3 . Validate determined stresses and strains in the elements of aerospace structures

4 . Calculate the critical load for the occurrence of buckling in thin-walled aerospace structures

5 . Estimate strength and reliability of aerospace structures under service loading

6 . Perform spoken and written communication regarding structural analysis of aerospace structures

Lectures

1. Introduction. Basic Elasticity.

2. Numerical methods for analysis of aerospace structures. Matrix methods.

3. Bending of thin plates.

4. Bending of open and closed, thin-walled beams.

5. Loads on structural components in aircraft structures.

6. FE analysis procedures. Boundary conditions. Presentation of input data and calculation results.

7. Sub-modelling in structural response analysis.

8. Geometrical and material nonlinearity.

9. Buckling of columns, thin plates and stiffened panels.

10. Fatigue and fracture of aerospace structures.

11. Loads and models of potential failure modes of the primary structure of the Ariane rocket. FEM analysis and dimensioning of the primary structure of the rocket.

12. Experimental analysis of the Ariane rocket primary structure strength. Validation of the rocket primary structure integrity assessment.

13. Structural reliability assessment: Failure surface. Parameters needed for reliability calculation.

14. Reliability of systems. Parallel and serial systems.

15. Statistic and deterministic approach in loads modelling.

Exercises

1. Introduction. Basics of modeling by using ANSYS.

2. 3D Modeling of a thin-walled structure (ANSYS).

3. 3D Modeling of a thin-walled structure (ANSYS).

4. 3D Modeling of a thin-walled structure (ANSYS).

5. 3D Modeling of a thin-walled structure (ANSYS).

6. FEM sensitivity analysis (ANSYS).

7. Example of FE analysis of gas turbine components.

8. FE nonlinear iterative and incremental analysis (ANSYS).

9. Buckling analysis of columns, thin plates and stiffened panels (ANSYS).

10. Examples of fatigue crack propagation and fracture analysis of stiffened panels (ANSYS).

11. Examples of FE analysis of the primary structure of the Ariane rocket.

12. Examples of experimental analysis of the primary structure of the Ariane rocket.

13. Example of reliability analysis.

14. System reliability analysis.

15. Aviation regulations. Assignments check.

Compulsory literature:

1. Introduction to Aircraft Structural Analysis , Megson, T.H.G, 3rd Edition, Elsevier, 2018, p. 0-0

2. Probabilistic methods in structural engineering, Augusti, G., Baratta, A., Casciati F., Chapman and Hall, London, 2007, p. 0-0

3. Selected research papers in area of fatigue and fracture of structures, Božić, Ž., -, 2020, p. 0-0

4. Dynamic strength of thin-walled structures, Božić, Ž.: , FSB, Zagreb, 2011. , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, Zagreb, 0000, p. 0-0

5. Aircraft structures for Engineering Students, Megson, T.H.G., Edvard Arnold, 1990, p. 0-0

Recommended literature:

6. Selected technical reports in the field of fatigue and fracture of structures, Božić, Ž.: ., -, 2020, p. 0-0