Mastering of knowledge and research methods of elementary reliability of power transmission components and the overall reliability of the gear transmission units. Mastering the research methodology of vibration and noise generation mechanism in these systems. Mastering the methodology of defining the structural parameters of the gear components based on reliability, vibration and noise design consraints.

After successful completion of the course, PhD students should be able to: • Use reliability and dynamics of the MS as the limits (constraints) in defining the design parameters at the robust level and at axiomatic principle. • Define and use elementary Reliability for design of gear units components (gears, bearings, seals, joints, etc.), related to a certain potential damage. • Decompose structure of the gear unit, decompose the overall reliability of the design to the level of components and then to integrate the structure and properties into the system. • Identify dynamic disturbances in the gear unit structure, identify the process of disturbance transferring through structure and emission into the surrounding. • Harmonize the design parameters of the gear unit in order to reduce the vibration and noise.

An overview of the elementary reliability and application of this reliability as Design Constraint in design parameters definition. Elementary reliability of gears, bearings, couplings, seals, shafts, shaft joints and hubs, steering mechanism, etc. Correlation of reliability and probability of service conditions and the probability of failure of the gear unit components. Deduction of gear unit overall reliability to the level of components and defining of boundary levels. Disturbance processes in the gear units and vibrations and noise generation. Transmission of disturbance energy through the structure of the system. Principles of dynamic processes alignment with the limitations of the gear vibration and noise levels.

Research, examination of relevant references, experimental determination the probability of service and critical conditions of gear unit components elementary reliability. Vibration and noise testing of gear transmission unit components. Numerical analysis of dynamic parameters of gear unit components. Determination of design parameters. Preparation and defense of the seminar work.

No condition.

Laboratory for gears and gear transmission units, Laboratory for vibration and noise, Software for numerical analysis - FEM, Software for vibration and noise measurement and for processing of measurement results.

Total assigned hours: 65

New material: 25
Elaboration and examples (recapitulation): 25

Auditory exercises: 0
Laboratory exercises: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 10
Review and grading of the project: 0
Test: 0
Test: 0
Final exam: 5

Activity during lectures: 5
Test/test: 0
Laboratory practice: 10
Calculation tasks: 0
Seminar paper: 55
Project: 0
Final exam: 30
Requirement for taking the exam (required number of points): 35

Ognjanović M.: Noise generation in machine systems (in Serbian), - University of Belgrade, Faculty of Mechanical Engineering, 1995. ISBN 86-7083-268-2; Ognjanović M.: Reliability and safe service of structures , - Monography chapter "From fracture mechanics to structural integrity assessment", (333-352) Belgrade, 2004.; Ognjanovic M.: Research of Power Transmission for Efficient Design, - Monography chapter “Konstruktionsmethodik fur Fahrzeugkonzepte” Braunschweig , Bericht Nr. 74, 2010, pp 139-157.; Ognjanovic M.: Innovative Development of Technical Systems (in Serbian), -University of Belgrade, Faculty of Mechanical Engineering, 2014. ISBN 978-86-7083-830-7; Ognjanović M.: Machine Design (in Serbian), - University of Belgrade, Faculty of Mechanical Engineering, 2020. ISBN 978-86-6060-0.53-2