Course - Machine Elements - TMM4112
Machine Elements
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About the course
Course content
Basic functions of machines and machine elements and their mechanical integrity. This includes, but not limited to:
- Fatigue design: including Wöhler curve and Haigh/Smith diagrams, Fatigue limit, Reduction factors, Stress concentrations, Multi-axial stresses, Spectrum fatigue lifetime.
- Machine and rotor dynamics: Spring supported machines, critical speed/rpm, static and dynamic balancing.
- Mechanisms and transmissions: Mechanics of the screw, gears.
- Couplings and brakes: Disc break (evenly distributed pressure and wear), drum brake (internal and external), fixed and releaseable couplings.
- Bearings: roller bearings, bearing design, life time assessment.
- Springs: torsion, coil, leaf, ring and rubber springs.
- Press and shrink-fit connections: deformation of thick-walled tubes, tolerances and fits.
- Bolts: threads, load carrying capacity, pretension, tightening/torque moment, bolt diagram.
- Welded joints: static and fatigue analyses.
Learning outcome
Knowledge: 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.
Technical skills: 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.
General competence: 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.
Compulsory assignments
- Exercises
Further on evaluation
There will be mandatory exercises to be handed in on blackboard. Admission to the written examination requires approval of at least 2/3 of the exercises.
If there is a re-sit examination, the examination form may be changed from written to oral.
Recommended previous knowledge
TKT4116 Mechanics 1, TKT4122 Mechanics 2, TMM4100 Materials Technology 1, or equivalent.
Required previous knowledge
Students are expected to have a basic understanding of mechanics of materials, failure criteria, statics and machine dynamics.
Course materials
Will be announced at the start of the semester
Credit reductions
Course code | Reduction | From |
---|---|---|
MAST2001 | 6 sp | Autumn 2024 |
Subject areas
- Technological subjects