Course code MmehB003
Credit points 3
Dynamics of Machines II
Total Hours in Course40
Number of hours for lectures16
Number of hours for seminars and practical classes0
Number of hours for laboratory classes16
Independent study hours49
Date of course confirmation24.01.2024
Responsible UnitInstitute of Mechanics and Design
Course developers
Ēriks Kronbergs
Dr. sc. ing.
lect.
Mārtiņš Dauvarts
Bc. sc. ing.
Prior knowledge
Fizi2021, Physics I
LauZ4190, Theoretical Mechanics II
Mate1029, Mathematics I
Mate1030, Mathematics II
MmehB008, Theoretical Mechanics I
Replaced course
MašZ4054 [GMAS4055] Dynamics of Machines II
Course abstract
The aim of the study course is to develop an understanding of mechanisms, machines and their division, as well as of machinery assemblies and their formation. Students learn the mechanism and machine dynamics that serve as a basis for machine calculations. Transmission mechanism kinematics and their synthesis are the basis for machine
design. Understanding the problem of vibration insulation is important for successful machine operation.
Learning outcomes and their assessment
Knowledge - is familiar with the laws and operation of machinery and mechanisms. Knows the theoretical foundations of the actual motion detection and provision of machine units. Graphical and analytical methods for analysis and design of machines and machines - Laboratory works.
Skills - can solve problems of machine and mechanism structure, kinematic, dynamic parameter optimization and machine vibration protection - Laboratory works.
Competence - Ability to use the acquired professional knowledge and skills in practical work and studies in solving engineering problems - Laboratory works.
Course Content(Calendar)
1. Dynamic model of the machine unit. Laboratory work: Experimental determination of moment of inertia. (Lecture 1h, laboratory work 2h, independent work 6h)
2. Reducing the force to the main member. (Lecture 1h)
3. Reducing the mass to the main member. Laboratory work: Reduced friction coefficient in bearings. (Lecture 1h, laboratory work 2h, independent work 6h)
4. Balancing the rotors balancing the mechanisms. Laboratory work: Friction in the pair of screws. (Lecture 1h, laboratory work 2h, independent work 8h)
5. Balancing the combustion engine. Laboratory work: Gear manufacturing.
(Lecture 1h, laboratory work 4h, independent work 10h)
6. Mechanical oscillations. (Lecture 1h)
7. Vibration sources. Laboratory work: Rotor static balancing.
(Lecture 1h, laboratory work 2h, independent work 9h)
8. Vehicle vibration insulation. Laboratory work: Dynamic balancing of the rotor
(Lecture 1h, laboratory work 4h, independent work 10h)
9. Vibration protection methods. (Lecture 1h)
10. Vibration of operator seats. (Lecture 1h)
11. Active Vibrator Insulators. (Lecture 1h)
12. Active Vibrator Insulators. (Lecture 1h)
13. Synthesis of cam mechanisms. (Lecture 1h)
14. Synthesis of cam mechanisms. (Lecture 1h)
15. Mechanical measurements (Lecture 1h)
16. Modeling of machinery. (Lecture 1h)
Part-time extramural studies:
All the topics intended for full-time studies are covered, yet the number of contact hours is ½ of the specified number of hours.
Requirements for awarding credit points
Examination. The student takes the exam according to the performed and defended laboratory works.
Description of the organization and tasks of students’ independent work
Laboratory Work Data Processing.
Criteria for Evaluating Learning Outcomes
In the assessment of the exam, the assessments of the defended laboratory works are cumulatively included.
Compulsory reading
1. Ozols O. Mehānismu un mašīnu teorija. Rīga: Zvaigzne, 1974. 418 lpp.
2. Rudņevs J., Ziņģis K. Mehānismu un mašīnu teorija. Rīga: Zvaigzne, 1986. 285 lpp.
Further reading
1. Uicker, J.J., Pennock, G.R., Shigley, J.E. Theory of machines and Mechanisms. Oxford University Press. 2017, 5th edition, 977 p.
2. Eckhardt H.D. Kinematic design of machines and mechanism. New York: McGraw-Hill, 1998. 612 p.
3. Wilson C.E, Sadler J.P. Kinematics and Dynamics of Machinery. New York: Harper Collins College Publishers, 1993. 797 p.
Periodicals and other sources
1. Theory of Mechanisms and Machines. A Scientific Electronic Journal. - http://tmm.spbstu.ru/english.html ISSN 2079-021X.
2. Machine design. – http://www.machinedesign.com/
Notes
The study course is included in the compulsory part of the Bachelor's study program in Agricultural Engineering at Faculty of Agricultural Engineering.