INTRODUCTION TO THE BASIC COMPONENTS OF AERONAUTICAL STRUCTURES: ANALYSIS OF STRESS AND STRAIN. COMPLEX AERONAUTICAL STRUCTURES WITH EMPHASIS ON WING BOX AND FUSELAGE: THEIR MATHEMATICAL MODELING FOR PRELIMINARY DESIGN PURPOSES AND STRUCTURAL INSTABILITY ANALYSIS.
teacher profile teaching materials
The teaching program is structured to provide students with knowledge and skills in the structural design of aeronautical components, using methods widely used in the aircraft conceptual and preliminary design phases.
The teaching program is divided into 36 lectures (equal to 9 CFU) divided into the following five main sections:
1) Beam theory: bidirectional bending, torsion, torsion of closed thin-walled beams ( Bredt-Batho theory), torsion of open thin-walled beams, shear of open and closed thin-walled beams (shear center), torsion and shear of multicell thin-walled beams, tapered beams.
2) Introduction to aircraft design and semi-monocoque structures: failure criteria of fragile and ductile materials, loads acting on aircraft, regulations for aircraft design, box-wing concept, fuselage structure, fuselage, and box-wing stress and strain analysis, structural idealization.
3) Thin plates Kirchhoff's theory: in-plane problem, bending problem, eigenfunctions method for simply supported plates.
4) Introduction to structural instability: buckling of the beam (Euler's critical load); buckling of thin plates; buckling on aeronautical structures.
5) Thin shells: shells in the form of a surface of revolution and loaded symmetrically with respect to their axis, pressurized fuselage stress analysis.
- C.T. Sun, Mechanics of Aircraft Structures, John Wiley & Sons, New York, 1998 (for contents 1, 2, 3 and 4 of the syllabus)
- S.P. Timoshenko, Theory of Plates and Shells, McGRAW-hill, 1959 (for contents 3 and 5 of the syllabus)
- Lectures notes by the teacher (for all the contents of the syllabus)
The educational material used by the teacher from time to time is indicated during lectures. The lecture notes are made available on the Moodle platform to facilitate their use for both attending and non-attending students. On the same platform, are also made available the specifications of the project the students have to perform during the year, as well as a collection of written tests of previous exams, to provide students with a valid and realistic test bench for the final exam.
Programme
The Aircraft Structures course is part of the activities of the Constructions and aerospace structures (ING-IND/04 SSD).The teaching program is structured to provide students with knowledge and skills in the structural design of aeronautical components, using methods widely used in the aircraft conceptual and preliminary design phases.
The teaching program is divided into 36 lectures (equal to 9 CFU) divided into the following five main sections:
1) Beam theory: bidirectional bending, torsion, torsion of closed thin-walled beams ( Bredt-Batho theory), torsion of open thin-walled beams, shear of open and closed thin-walled beams (shear center), torsion and shear of multicell thin-walled beams, tapered beams.
2) Introduction to aircraft design and semi-monocoque structures: failure criteria of fragile and ductile materials, loads acting on aircraft, regulations for aircraft design, box-wing concept, fuselage structure, fuselage, and box-wing stress and strain analysis, structural idealization.
3) Thin plates Kirchhoff's theory: in-plane problem, bending problem, eigenfunctions method for simply supported plates.
4) Introduction to structural instability: buckling of the beam (Euler's critical load); buckling of thin plates; buckling on aeronautical structures.
5) Thin shells: shells in the form of a surface of revolution and loaded symmetrically with respect to their axis, pressurized fuselage stress analysis.
Core Documentation
- T.H.G. Megson, Aircraft Structures for Engineering Students, Arnold, London, 1999 (for contents 1, 2, 3 and 4 of the syllabus)- C.T. Sun, Mechanics of Aircraft Structures, John Wiley & Sons, New York, 1998 (for contents 1, 2, 3 and 4 of the syllabus)
- S.P. Timoshenko, Theory of Plates and Shells, McGRAW-hill, 1959 (for contents 3 and 5 of the syllabus)
- Lectures notes by the teacher (for all the contents of the syllabus)
The educational material used by the teacher from time to time is indicated during lectures. The lecture notes are made available on the Moodle platform to facilitate their use for both attending and non-attending students. On the same platform, are also made available the specifications of the project the students have to perform during the year, as well as a collection of written tests of previous exams, to provide students with a valid and realistic test bench for the final exam.
Type of delivery of the course
The teaching is structured in 36 class lectures. Some classes are devoted to practical deepening the theoretical arguments, through appropriate tutorials led by the teacher. Some classes are also dedicated to the presentation and discussion of a project in the field of aeronautical structures, that has to be carried out as group work by the students and presented at the final exam. The educational material is made available on the Moodle platform, to facilitate its use for both attending and non-attending students.Attendance
Class attendance, although recommended, is not mandatory.Type of evaluation
Students' learning is assessed through a written test of 2 hours and a half, and an oral test. The written test includes an exercise and one or two theoretical questions with open answers, aimed at verifying the level of effective understanding of the concepts and the students' ability to apply them in real contexts. Passing the test is the prerequisite to participate in the oral test, which includes theoretical and practical questions related to the entire program. During the oral test, the group project that the students carried out during the year will also be discussed.