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Dynamics of Machines II

Course developer

Prior knowledge

MmehB010, Dynamics of Machines I

Replaced course

MašZ4006 [GMAS4006] Dynamics of Machines II

Course abstract

The aim of the 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 4h)
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 4h)
4. Balancing the rotors balancing the mechanisms. Laboratory work: Friction in the pair of screws. (Lecture 1h, laboratory work 2h, independent work 4h)
5. Balancing the combustion engine. Laboratory work: Gear manufacturing.
(Lecture 1h, laboratory work 2h, independent work 6h)
6. Mechanical oscillations. (Lecture 1h)
7. Vibration sources. Laboratory work: Rotor static balancing.
(Lecture 1h, laboratory work 2h, independent work 6h)
8. Vehicle vibration insulation. Laboratory work: Dynamic balancing of the rotor
(Lecture 1h, laboratory work 2h, independent work 8h)
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)

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 Ipp.
2. Rudņevs J., Ziņģis K. Mehānismu un mašīnu teorija. Rīga: Zvaigzne, 1986. 285 Ipp.

Further reading

1. Eckhardt H.D. Kinematic design of machines and mechanism. New York: McGraw-Hill, 1998. 612 p.
2. 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. Pieejams: http://tmm.spbstu.ru/english.html ISSN 2079-021X.

2. Machine design. Pieejams: http://www.machinedesign.com/

Notes

The study course is included in the Compulsory part of the Bachelor’s study program “Agricultural Engineering” and “ Machine design and Manufacturing”