The main goal of this course for the student is to give the necessary knowledge of: • Computer aided machine design, • understanding general relations between the gear parameters and those of the basic rack, • formulating the optimization problеms for planetary gear train and identify critical elements.

During this course, the student will carry out: • Overview of design machine element, • methodology for calculation the planetary gear trains, • strategies for machine design.

1. Design strategies. Field of application. Design objectives. Design analysis and evaluation. 2. Preliminary design: design synthesis. Computer aided machine design. 3. Gears in mesh, contact ratio, interference and backlash. 4. Internal gears. Tooth profile an internal gear. Meshing geometry of an internal gеair pair. 5. Аxial and radial assembly, tip interference. 6. Kinematic structure of the planetary gear train. 7. Force analysis - forces produced by central gear in mesh with planet gears. 8. Instantaneous efficiencies during the contact period and overall efficiency for planetary gear train. 9. Tooth stresses and strengths for external and internal gears of planetary gear train. 10. Optimization of planetary gear train.

Consists of the laboratory exercises. Projects are main component of this course.

Some knowledge of basic machine elements and mechanics. Computer programming in MATLAB.

Laboratory for CAD and laboratory for experimental investigation of gear trains.

Total assigned hours: 65

New material: 40
Elaboration and examples (recapitulation): 10

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: 15
Review and grading of the project: 0
Test: 0
Test: 0
Final exam: 0

Activity during lectures: 15
Test/test: 0
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 15
Project: 0
Final exam: 70
Requirement for taking the exam (required number of points): 0

Joseph E. Shigley: "Mechanical Engineering Design", Mc Graw Hill, 1993.; J.R. Colbourne "The Geometry of Involute Gears", Springer-Verlag, 1987; H. Eschenauer, J. Koski, A. Osyczka: "Multicriteria Design Optimization", Springer-Verlag, 1990.