Rotordynamic Systems (FSI-RRS)

Academic year 2018/2019
Supervisor: Ing. Petr Lošák, Ph.D.  
Supervising institute: ÚMTMB all courses guaranted by this institute
Teaching language: Czech
Aims of the course unit:
The students obtain the overview of the rotor dynamic systems.
Learning outcomes and competences:
The students obtain the basics of theoretical knowledge, computational modelling. The practical part of this subject will focus on experimental analysis of dynamic behaviour of experimental kit. The results obtained during the computational and experimental analysis will be compared and analyzed
Prerequisites:
To solve the eigen value problems
To solve steady state and transient responses for dynamic system with n degree of fredom
The knovledge of base of dynamic behaviour of nonlinear dynamic systems
The knovledge of base of experimental modal analysis
Course contents:
The students are acquainted with the basic dynamic behaviour of rotor systems and construction of parts, shaft parts, non-linear coupling forces between rotating and non-rotating parts, turbine and compressor blades and disks. The subject focuses on theoretical, computational and experimental modelling. The natural frequencies and natural shapes of vibration, steady state and transient responses are analysed and discussed.
Teaching methods and criteria:
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.
Assesment methods and criteria linked to learning outcomes:
The students will solve the semester tasks, which are necessary e for awarding the course-unit credit. In the last week of the semester students will write the exam tests. This test consists of 10 questions, where 2 points are the maximum for each question. It is necessary to obtain minimum 10 points.
19-20 - excelent
16-18 – very good
14-15 - good
12-13 - satisfactory
10-11 - sufficent
0-9 – failed

In case of unsatisfactory evaluation, the second part of the exam is oral. The results of semester assignments will be taken into account for final evaluation.
Controlled participation in lessons:
Attendance at practical training is obligatory. Longer absence is compensated for by special tasks according to instructions of the tutor. Seminar credits are awarded on the condition of: active presence in the seminars, good results of seminar tests on basic knowledge, solution of additional tasks in case of longer excusable absence. Seminar tutor will specify the concrete form of these conditions in the first week of semester.
Type of course unit:
    Lecture  13 × 2 hrs. optionally                  
    Computer-assisted exercise  13 × 1 hrs. compulsory                  
Course curriculum:
    Lecture 1. Basic phenomena of rotor dynamic systems
2. Campell diagram
3. Bearings used in rotor dynamic systems - journal and ball
4. Bearings used in rotor dynamic systems - other types
5. Squeeze film dampers
6. Electromechanical couplings, seals
7. Coupled vibrations of rotor dynamic systems with elastics stator part
8. Methods of solution of nonlinear rotor dynamic systems - steady state response
9. Methods of solution of nonlinear rotor dynamic systems - transient response
10. Balancing of elastics rotors
11. Dynamics of blades of turbine and compressors
12. Dynamics of discs and rotary periodic structures
13. Analysis and evaluation of vibrations in rotary machines
    Computer-assisted exercise 1. Computational analysis of basic dynamics behaviour
2. Computational analysis of nonlinear rotor dynamic systems - linear
3. Computational analysis of nonlinear rotor dynamic systems - nonlinear with journal bearings
4. Computational analysis of nonlinear rotor dynamic systems - nonlinear with squeeze film dampers
5. Computational analysis of nonlinear rotor dynamic systems - nonlinear with seals
6. Experimental analysis of model rotor system - linear
7. Experimental analysis of model rotor system - nonlinear with journal bearingI
8. Experimental analysis of model rotor system - nonlinear with squeeze film damper
9. Computational and experimental analysis of blades
10. Computational and experimental analysis of discs - disk without blades
11. Computational and experimental analysis of discs - disk with blades
12. Experimental balnacing of a rigid rotor system
13. Credit
Literature - fundamental:
1. Erwin Kramer: Dynamics of Rotors and Foundations , Springer Verlag, 1993.
2. Gasch, Pfutzner: Dynamika rotorů, SNTL Praha, 1980.
The study programmes with the given course:
Programme Study form Branch Spec. Final classification   Course-unit credits     Obligation     Level     Year     Semester  
M2A-P full-time study M-MET Mechatronics -- GCr 5 Compulsory-optional 2 2 W
M2A-P full-time study M-IMB Engineering Mechanics and Biomechanics -- GCr 5 Compulsory 2 2 W