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Lecturer(s)
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Kepka Miloslav, Ing. Ph.D.
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Tittel Jan, Ing. IWE
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Ráž Karel, Ing. Ph.D.
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Minich Radovan, Ing.
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Žlábek Pavel, Ing. Ph.D.
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Course content
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Overview of selected applications of computing and of computational and experimental mechanics during the developing and testing of machinery and equipment in production, transport, handling, and special machines. Knowledge of applied within the context of individual standards, guidelines and recommendations and software support for the following solution areas: operational strength and fatigue life, deformation resistance, limit states and safety. Structural design and assessment are then put into context with practical examples. 1. Introduction to the subject. Definition of service strength and service life. Requirements of the mechanical and plant designer. Lessons from operational accidents of real structures. 2. Factors affecting operational strength. Properties of basic materials, machine operating loads, geometry and shape of components, manufacturing technology and surface treatment. The primary classification of limiting limit states. 3. Philosophy of strength sizing and evaluation and durability of structural components. 4. Relationship between service strength, service life and service life reliability. Reliability of mechanical systems. Measures to increase reliability. 5. Qualitative vs quantitative evaluation, failure vs fatigue. 6. Sizing by coefficients. Relevant standards, standards, selected recommended practices, and software support for operational assessment life of machinery by coefficients. 7. Limit state sizing and perspectives probabilistic approach. Relevant standards, procedures, and software support for limit state sizing. 8. Case studies and their solutions within SW such as nCode Glyphworks, ANSYS SW and Siemens NX SW,... 9. Design, dimensioning, and testing mechanical machine parts' cycle strength and fatigue life. 10. Experiments in testing laboratories. Evaluation fatigue testing of materials and process connections, testing machines. 11. Experiments under operating conditions. Loading in service, test polygons and equipment, measurements, processing in terms of signal types and by frequency of characteristic parameters, harmonic and random loading. Variable amplitude loading, operational load spectra. Load evaluation for a subsequent lifetime and reliability assessment of machinery. 12. Road vehicles, rolling stock, transport machinery and special machinery including, e.g. evaluation of welded components, problems of thick-walled and thin-walled welded parts - specifics in strength and durability and their evaluation, industry standards. 13. Excursions to selected workplaces.
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Learning activities and teaching methods
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Lecture supplemented with a discussion
- Presentation preparation (report) (1-10)
- 10 hours per semester
- Contact hours
- 48 hours per semester
- Preparation for an examination (30-60)
- 55 hours per semester
- Attendance on a field trip (number of real hours - maximum 8h/day)
- 6 hours per semester
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| prerequisite |
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| Knowledge |
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| know and understand the basics of materials science |
| understand the basic principles of machine design and construction |
| list and explain the main technologies for manufacturing machine parts |
| know the limit states of materials and structures under static, cyclic and dynamic loading |
| Skills |
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| be able to calculate stress distribution in basic cross-sections of machine parts |
| be able to analytically calculate internal forces in simple mechanical systems |
| be able to perform and evaluate basic mechanical tests of materials |
| be able to obtain information from foreign language technical sources |
| Competences |
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| N/A |
| N/A |
| N/A |
| learning outcomes |
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| Knowledge |
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| to have basic knowledge of the breakdown of operational loading processes of structures and the possibilities of their simulation in laboratory conditions using loading machines |
| be familiar with the basics of the reliability of machines, machinery and know the measures to increase the reliability of machines and their parts |
| know the principles of dimensioning components for durability and safe life and distinguish between different approaches to assess their reliability |
| Skills |
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| coordinate the cooperation of designers with computer specialists and test engineers in solving issues of the operational strength and fatigue life of machines |
| be familiar with the standards and regulations relating to the testing of machinery and machinery components |
| design the main parameters of laboratory and operational tests of machines and their components and know what procedures and methods will be used to evaluate these tests |
| Competences |
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| N/A |
| N/A |
| teaching methods |
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| Knowledge |
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| Field trip |
| Lecture supplemented with a discussion |
| Multimedia supported teaching |
| E-learning |
| Self-study of literature |
| Skills |
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| Individual study |
| Practicum |
| Students' portfolio |
| Multimedia supported teaching |
| E-learning |
| Self-study of literature |
| Competences |
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| Individual study |
| E-learning |
| Multimedia supported teaching |
| assessment methods |
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| Knowledge |
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| Combined exam |
| Skills |
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| Skills demonstration during practicum |
| Competences |
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| Individual presentation at a seminar |
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Recommended literature
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Darrell Socie. EFatigue: Fatigue Analysis on the Web. .
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First, Jiří. Zkoušení automobilů a motocyklů : příručka pro konstruktéry. Praha : S&T CZ, 2008. ISBN 978-80-254-1805-5.
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Haibach, Ervin. Betriebsfestingkeit - Verfahren und Daten zur Bauteilberechnung. 2005. ISBN 978-3-540-29363-7.
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Jan Papuga. PragTic. .
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Lauschmann, Hynek. Mezní stavy I. Únava materiálu. ČVUT v Praze, 2007. ISBN 978-80-01-03671-6.
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Růžička, Milan; Hanke, Miroslav; Rost, Milan. Dynamická pevnost a životnost. Praha : ČVUT, 1992.
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Vlk, František. Zkoušení a diagnostika motorových vozidel. Brno : Nakladatelství a vydavatelství Vlk, 2001. ISBN 80-238-6573-0.
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