Academy of Technical and
Art Applied Studies Belgrade

Machine elements Course code: 117043 | 7 ECTS credits

Basic information
Level of Studies: Undergraduate applied studies
Year of Study: 2
Semester: 3
Requirements:
Goal: Introduce the students to solving practical tasks in mechanical engineering. Teach students to understand components of mechanical systems, their functions, applications and variants of design solutions. Teach students for calculation of machine elements, and also mastering the basics principles for machine elements design.
Outcome: After completion of the course the students should be able to: • Recognize machine elements. • Use of tolerance of dimensions, shape and position, and surface roughness. • Perform basic calculations of strength of mechanical parts. • Select types of rolling and sliding bearings, calculate load capacity and design of installation. • Design bolted joints. • Identify and monitor the current (transformation) of mechanical power in transmitters.
Contents of the course
Theoretical instruction:
  1. Machine elements: definition and classification.
  2. Linear size dimensions tolerance
  3. Basics of calculation of machine elements: working loads, working stresses, stress concentration.
  4. Stress concentration and critical stresses of machine parts
  5. Inseparable joints: rivet, glued, soldered and welded joints.
  6. Thread and bolted threaded connections: the function, characteristics, classification
  7. Principles of mechanical power transformation, the basic equations of the transformation of mechanical power, transmission ratio and power transmission efficiency
  8. Belt transmission pairs, load, stresses, service life
  9. Shafts, axles and pins: function, design forms, application
  10. Rolling bearings, types and characteristics of standard roller bearings
  11. Design solutions, materials and shapes sliding bearing parts
  12. Vessels, pipes and fittings: Basic concepts, function, division and construction solutions.
Practical instruction (Problem solving sessions/Lab work/Practical training):
  1. 1. Selection of linear size dimension tolerance. Analysis of clearance, interference and uncertain fits. 2. Determination and calculation of stress concentration factors. 3. Determination of machine parts dynamic strength. 4. Calculation of safety factors of the machine elements. 5. Solving practical problems in seminar works.
Textbooks and References
  1. Ognjanović, M., „Mašinski elementi“, Univerzitet u Beogradu, Mašinski fakultet, 2016.
  2. Čekerevac, Z., „Mašinski elementi - praktikum, Viša železnička škola, Beograd, 2006.
  3. Stamenić, Z., „Autorizovana predavanja“.
Number of active classes (weekly)
Lectures: 3
Practical classes: 3
Other types of classes: 0
Grading (maximum number of points: 100)
Pre-exam obligations
Points
activities during lectures
0
activities on practial excersises
0
seminary work
0
colloquium
0
Final exam
Points
Written exam
0
Oral exam
0