Multiscale Contact Mechanics and Tribology
Faculteit | Science and Engineering |
Jaar | 2021/22 |
Vakcode | WMIE011-05 |
Vaknaam | Multiscale Contact Mechanics and Tribology |
Niveau(s) | master |
Voertaal | Engels |
Periode | semester I b |
ECTS | 5 |
Rooster | rooster.rug.nl |
Uitgebreide vaknaam | Multiscale Contact Mechanics and Tribology | ||||||||||||||||||||||||
Leerdoelen | At the end of the course, the student is able to: 1. Record and reproduce presented material; appraise and compare theories and models; judge the validity of theories in modelling specific applications. 2. Reproduce solutions from literature; derive, solve, compare and analyze results; assess, summarize and choose appropriate theories and models. 3. Discuss and assess the presented material and homework assignments; practice and assess learning. 4. Practice and demonstrate knowledge of requisite programming and modelling skills. Apply these to the solution of complex tribological problems. 5. Practice and demonstrate knowledge of requisite programming and modelling skills. |
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Omschrijving | Tribology is the study of interfaces in relative motion. The need to control friction is not new; however, its systematic study is relatively recent while its precise nature is still not fully understood. This course aims to introduce students to tribology the study of contact, friction, lubrication and wear starting from the traditional definitions and transitioning to recent theories and models used to understand the fundamentals of tribology and enable the design, analysis and optimization of devices over multiple scales. Part of the course will deal with classical (macroscale) definitions and models of contact, friction and lubrication including, but not limited to: • Hertzian contact and Coulomb friction; • Hydrodynamic and elastohydrodynamic lubrication; and, • Wear. Example applications will be utilized to demonstrate these themes with analytical solutions as well as representative experimental and simulation results. Subsequently transitioning to smaller scales, the course will look at the role of surface topography in contact and friction and investigate the importance of adhesion as a function of scale and roughness. Theories (and models) to be discussed are, for example: • Short and long range atomic interactions; • Roughness characterization (statistical, numerical, fractal); • Sphere-on-flat models with adhesion (JKR, DMT, M-D); • Rough surface models (Greenwood-Williamson, CEB, SBL, Persson); • Other approaches (finite element-based models, molecular dynamics). Brief descriptions of experimental methods will introduce students to the tools used in micro- and nanotribology, such as profilometry, atomic force microscopy (AFM) and nanoindentation. The course will also cover the coupling of tribology with dynamics and vibrations, especially in the micro- and nanoscale, via reviews of applications such as the head-disk interface of hard disk drives. |
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Uren per week | |||||||||||||||||||||||||
Onderwijsvorm | Hoorcollege (LC), Opdracht (ASM), Werkcollege (T) | ||||||||||||||||||||||||
Toetsvorm |
Opdracht (AST), Schriftelijk tentamen (WE)
(See remarks for final grade.) |
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Vaksoort | master | ||||||||||||||||||||||||
Coördinator | Prof. Dr. A. Vakis | ||||||||||||||||||||||||
Docent(en) | Prof. Dr. A. Vakis | ||||||||||||||||||||||||
Verplichte literatuur |
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Entreevoorwaarden | The course unit assumes prior knowledge acquired from fundamental courses such as "Materials and Molecules" and "Dynamics of Engineering Systems" (compulsory courses in the Bachelor IEM). The course unit content is structured so that all relevant concepts from earlier courses are re-introduced where necessary, starting from the first lecture that constitutes a review of solid mechanics and materials fundamentals. | ||||||||||||||||||||||||
Opmerkingen | Four homework assignments constitute 60% of the final grade. These increase in their level of difficulty, as estimated in the required workload of 4, 8, 12 and 8 hours, respectively, with their weights being 10%, 15%, 20% and 15%. The final exam constitutes 40% of the final grade. Students must receive a final grade of at least 5.6 (56%) to pass the course with an assigned grade of 6.0. This course was previously registered with course code WMIE14006 |
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Opgenomen in |
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