COURSE GOALS: Getting familiar with the most commonly used machine elements and their functions. To analyse influence of static and dynamic strength on design and dimensioning under acceptable safety criteria. Introduction to mechanisms of machine elements fatigue. Basics of design with respect to manufacturing processes. Introduction to the basic non mechanical machine elements. Basics of internal combustion engines.
LEARNING OUTCOMES AT THE LEVEL OF THE PROGRAMME:
1. KNOWLEDGE AND UNDERSTANDING
1.2. demonstrate a thorough knowledge and understanding of basic concepts in techniques
2. APPLYING KNOWLEDGE AND UNDERSTANDING
2.2. identify and describe important aspects of techniques and their applications
2.7. prepare and perform classroom practicals (practical work)
3. MAKING JUDGMENTS
3.1. develop a critical scientific attitude towards research in general, and in particular by learning to critically evaluate arguments, assumptions, abstract concepts and data
3.2. develop clear and measurable learning outcomes and objectives in teaching based on curriculum goals
4. COMMUNICATION SKILLS
4.1. communicate effectively with pupils and colleagues
5. LEARNING SKILLS
5.1. search for and use professional literature as well as any other sources of relevant information
LEARNING OUTCOMES SPECIFIC FOR THE COURSE:
Upon passing the course on Fundamentals of Mechanical Engineering the student will be able to:
1. define mechanical characteristics of material and testing methods,
2. identify and distinguish joining elements, rotating elements and power transmission elements,
3. calculate stress values for fixed and separable joints,
4. investigate values of the most important physical quantities for torque transmission machine elements: orbital and angular velocities, rotating frequency and torque,
5. calculate machine parts for power transmission by friction and by form,
6. make a drawing of a machine element and define its element's function,
7. apply basic technical criteria on design and dimensioning of machine parts (safety factor, recycling ability, etc.).
COURSE DESCRIPTION:
1. Fundamentals of mechanics and strength of materials. Force plan.
2. Load of machine elements. Form strength, durability and safety. Wöehler's curve. Design of Smith's diagram.
3. Review of driving and driven machines and their working performance. Kinematics of machine elements (velocities, ratios).
4. Welded, soldered and bonded joints. Welded joints calculus. Numerical examples of real bonded and soldered joints.
5. Screws and springs. Assignment of the first design project incorporating machine elements thought.
6. Keys, pins, rivets and bolts.
7. Shafts and axels, seals and sealing.
8. Journal and rolling bearings. Principle of calculation of the journal bearings without hydrodynamic lubrication. Selection of rolling bearings.
9. Clutches and breaks. Examples of numerical calculations.
10. Friction, belt and chain transmission. Basic of transmission.
11. Spur gears and other gear transmissions. Proving first law of gearing. Design of involute and cycloid curves.
12. Electrical, pneumatic and hydraulic elements. Hydraulic pumps. Basics in design and calculation of conical, screw and worm gears.
13. Pipeline elements: pipes, valves, gate valves. Hydraulic motors and pumps. Principles of hydrostatic, hydrodynamic and electrical power and movement transmission.
14. Internal combustion engines, types and division.
15. Piston mechanisms basis and analysis. Internal combustion engines design.
Exercises and seminars are following lectures by content.
REQUIREMENTS FOR STUDENTS:
Students must attend lectures and exercises, make to individual design projects and solve at least 50 percent of two written preliminary exams each.
GRADING AND ASSESSING THE WORK OF STUDENTS:
Grading and assessing the work of students during the semesters:
* One written preliminary exam.
Grading at the end of semester:
* Final written preliminary exam.
* Two individual design projects and oral presentation.
Contributions to the final grade:
* 58 percent of the grade is carried by the results of the two written preliminary exams
* 14 percent of the grade is carried by the class attendance
* 28 percent of the grade is carried by the result of two individual projects and oral presentation
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- K.H.Decker, Elementi strojeva, Tehnička knjiga, Zagreb1984.
M. Opalić: Osnove strojarstva, autorizirana predavanja, FSB, Zagreb 2002.
- Tehnička enciklopedija, Leksikografski zavod, Zagreb.
B.Kraut, Strojarski priručnik, Aksiom, Zagreb 2004.
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