Czech

3

doc. Ing. Stanislav Věchet, Ph.D.

Institute of Solid Mechanics, Mechatronics and Biomechanics

Students must be able to solve the eigen value problem, solve the response in forced, steady and transient oscillations of systems with n degrees of freedom. Furthermore, the students must to have knowledge of the basics of nonlinear vibrations, and knowledge of the basics of experimental modal analysis. The student must know, matrix calculus, linear algebra, differential equations, fundamentals of the finite element method.

Active participation in the course, obtaining at least 20 points (out of 40 possible), which can be received by completing tasks and achieving at least 30 points (out of 60 possible) in the test. The specific form of the tests, types, number of tasks or questions and details of the assessment will be given by the lecturer during the semester. The final evaluation is given by the sum of the pointsaccording ECTS. For successful completion of the course it is necessary to obtain at least 50 points.

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.

The course aims to introduce students to the basics of rotor-dynamic systems and evaluate the critical speed of shafts and disks.

Students will acquire basic theoretical knowledge in the field of rotor systems and reduction of degrees of freedom and will become familiar with the possibilities of computational modeling. They will learn how to predict resonance states and critical speeds of rotating machines and how to suppress them. Students will be able to perform a reduction of systems with many degrees of freedom, thus reducing computational time.

Programme N-IMB-P: Engineering Mechanics and Biomechanics, Master's
specialization BIO: Biomechanics, compulsory

Programme N-IMB-P: Engineering Mechanics and Biomechanics, Master's
specialization IME: Engineering Mechanics, compulsory

13 hours, compulsory

• Calculation of critical speeds using simple rotor models


• Simulation of electric motor start-up in the time domain


• Simulation of rotor behaviour in bearings


• Vibration of disks and bladed disks


• Modeling of bladed disks using cyclic symmetry


• Degrees of freedom reduction: Examples in MATLAB, MSC Adams and ANSYS