Course - Machine Elements - TMM4112
TMM4112 - Machine Elements
Examination arrangement: Written examination
|Evaluation form||Weighting||Duration||Examination aids||Grade deviation|
|Written examination||100/100||4 hours||C|
Basic functions of machines and machine elements. Mechanical integrity.
1. Fatigue design: including Wöhler curve and Smith diagrams, Fatigue limit, Reduction factors, Stress concentrations, Multi-axial stresses, Spectrum fatigue lifetime.
2. Machine and rotor dynamics: Spring supported machines, critical speed/rpm, static and dynamic balancing.
3. Mechanisms and transmissions: Mechanics of the screw, gears.
4. Couplings and brakes: Disc break (evenly distributed pressure and wear), drum brake (internal and external), fixed and releaseable couplings
5. Bearings: roller bearings, bearing design, life time assessment.
6. Springs: torsion, coil, leaf, ring and rubber springs.
7. Press and shrink-fit connections: deformation of thick-walled tubes, tolerances and fits.
8. Bolts: threads, load carrying capacity, pretension, tightening/torque moment, bolt diagram.
9. Welded joints: static and fatigue analyses.
The student has knowledge of:
- Machine elements and their design, functional principles, mechanisms, and integration in machinery.
- The functions of some common machine elements and the solution of design and engineering problems associated with these.
- How to establish structural and dynamics models for mechanical behavior with basis in subsystem or component.
- The application of design criteria for different (mechanical) functional and design requirements for various machine elements and components.
- Choice of reasonable design and engineering solutions with basis in basic understanding of mechanical behavior and design criteria.
The student shall master the following:
- Apply knowledge from basic courses such as mathematics, physics, mechanics, statics, (strength of) materials to evaluate, design and engineer real components/machine elements.
- Simplify basic machine systems into representative models for mechanical analysis.
- Perform simple predictions, providing a basis for more effective and right evaluation of critical factors and issues associated with (design) robustness of machine components.
- Provide the necessary competence to carefully evaluate results obtained by more advanced numerical analysis methods such as FEM.
The student shall on general basis understand:
- Main steps and considerations included in a design process for machine elements.
- Understand on general basis reasonable, sound design principles for selected machine components.
- General design and engineering principles for machine elements subjected to static and dynamic loads.
- On an independent basis capture knowledge of more complex machine elements and design and engineering principles.
Learning methods and activities
Lectures, demonstrations, exercises.
Further on evaluation
Admission to the written examination requires approval of 3/4 of exercises.
If there is a re-sit examination, the examination form may be changed from written to oral.
For a re-take of an examination, all assessments during the course must be re-taken.
Exam registration requires that class registration is approved in the same semester. Compulsory activities from previous semester may be approved by the department.
Recommended previous knowledge
TKT4116 Mechanics 1, TKT4122 Mechanics 2, TMM4100 Materials Technology 1, or equivalent.
G. Härkegård: Dimensjonering av maskindeler, Tapir Akademisk Forlag, Trondheim, 2004.
J.A. Collins, H.R. Rusby, G.H. Staab: Mechanical Design of Machine Elements and Machines: A Failure Prevention Perspective, Wiley 2010
Credits: 7.5 SP
Study level: Third-year courses, level III
Term no.: 1
Teaching semester: SPRING 2021
No.of lecture hours: 3
Lab hours: 2
No.of specialization hours: 7
Language of instruction: Norwegian
- Technological subjects
Department with academic responsibility
Department of Mechanical and Industrial Engineering
Examination arrangement: Written examination
- Term Status code Evaluation form Weighting Examination aids Date Time Digital exam Room *
- Spring ORD Written examination 100/100 C
Room Building Number of candidates
- * The location (room) for a written examination is published 3 days before examination date. If more than one room is listed, you will find your room at Studentweb.
For more information regarding registration for examination and examination procedures, see "Innsida - Exams"