Course detail

Aircraft Structure II

FSI-OLKAcad. year: 2011/2012

The influence of longitudinal deformation. The bearing capacity of stiffened panels and thin-walled aircraft structures. Computational methods used in aviation. The stress-strain analysis of aircraft structures and its parts. Sandwich structures. The finite element method introduction. The FEM application on dynamic behaviour of structures. Material and geometric non-linearity. Introduction and practise of FEM application using the MSC-NASTRAN, ANSYS and MSC-PATRAN software packs.

Language of instruction

Czech

Number of ECTS credits

6

Mode of study

Not applicable.

Guarantor

prof. Ing. Antonín Píštěk, CSc.

Department

Institute of Aerospace Engineering (LÚ)

Learning outcomes of the course unit

Students will be able to calculate the stress, deformation and the strength of aircraft structure with the help of software systems “STRENGTH” and systems PATRAN, NASTRAN, ANSYS.

Prerequisites

The basic knowledge of mathematics, mechanics, structure and strength.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations.

Assesment methods and criteria linked to learning outcomes

Conditions for the course-unit credit award: participation in lessons (80% at least), presentation of the report elaboration from laboratory exercises. The exam has written (theoretical part and practical exercises) and oral parts.

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

The goal is to explain the theory of deplanation and strength of aircraft structures. Students will be familiarized with special programs for tension calculations and strength of aircraft structures. They will learn the basis of FEM and its application on aircraft structure. Students will acquire knowledge of work with FEM, NASTRAN, ANSYS, and PATRAN.

Specification of controlled education, way of implementation and compensation for absences

Both lectures and exercises are compulsory, and the attendance (80% at least) is checked and recorded. The absence (in justifiable cases) can be compensated by personal consultation with the lecturer and elaboration of individually assigned topics and exercises. Individual tasks must be finished and handed in the week course-unit credits are awarded at the latest.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Braner,J.R.: Finite Element Analysis, , 0
Pistek a kol. : Pevnost a životnost. Skripta VUT, 1987.
Rivelo,R.M Theory and Analysis of Flight Structures

Recommended reading

Bittnar,Z,Sejnoha,J.:: Numerické metody mech., , 0
Kolář, a kol.: FEM principy a praxe MKP, , 0
Obrazcov,I.F: Metod konecnych elementov v zadacach stroitelnoj mechaniky letatelnych apparatov., 1985

Classification of course in study plans

  • Programme N2301-2 Master's

    branch M-STL , 1 year of study, summer semester, compulsory

Type of course unit

 

Lecture

39 hod., optionally

Teacher / Lecturer

prof. Ing. Antonín Píštěk, CSc.

Syllabus

1. Strength of aircraft structures.
2. Strength of semi-monocoque structures using sequential loading method.
3. Strength of structures using sandwich coefficient method.
4. Loading of joints and hinges.
5. Special properties of wooden structures (with respect to stress analysis).
6. Special properties of composite structures (with respect to stress analysis).
7. Introduction to finite element method.
8. Description and properties of the most important elements.
9. Stiffness matrix.
10. Conditions for aerospace structures idealization in FEM.
11. Application of FEM on the dynamic performance of the structure.
12. Material and geometric non-linearity.
13. FEM in airflow calculations.

Exercise

14 hod., compulsory

Teacher / Lecturer

prof. Ing. Antonín Píštěk, CSc.

Syllabus

1. Introduction to UNOSNOST software application.
2. Example of stress analysis using UNOSNOST software application.
3. Example of stress analysis using UNOSNOST software application.
4. Example of stress analysis using reduction coefficients method.
5. Calculation of loads on riveted, bounded and bolt joints.
6. Example of stress analysis of a wooden structure.
7. Composite structure – design and analysis.

Computer-assisted exercise

12 hod., compulsory

Teacher / Lecturer

prof. Ing. Antonín Píštěk, CSc.

Syllabus

1. Introduction to MSC. PATRAN/NASTRAN/ANSYS.
2. Stress analysis of selected structural element (NASTRAN, PATRAN, ANSYS).
3. Stress analysis of selected structural element (NASTRAN, PATRAN, ANSYS).
4. Stress analysis of selected structural element (NASTRAN, PATRAN, ANSYS).
5. Stress analysis of selected structural element (NASTRAN, PATRAN, ANSYS).
6. Stress analysis of selected structural element (NASTRAN, PATRAN, ANSYS).