Department of Mechanical Engineering, Unit Catalogue 2009/10 |
ME20016: Solid mechanics 3 |
Credits: | 6 |
Level: | Intermediate |
Period: | Semester 1 |
Assessment: | EX 85%, OT 15% |
Supplementary Assessment: | ME20016 Reassessment Examination (where allowed by programme regulations) |
Requisites: | Before taking this unit you must take ME10010 |
Description: | Aims: * To introduce the vibrations of mechanical systems in a one degree of freedom context. * To introduce the theory of torsion in non-circular and open- sections, dual axis bending and the concept of fatigue failure. Learning Outcomes: After taking this unit the student should be able to: * Set up the equations of motion for systems with one degree of freedom; find natural frequencies of free motion; calculate rates of decay from viscous damping and vice versa; determine motions resulting from a sinusoidal force, unbalance and base excitation. * Estimate maximum responses using shock spectra. * Calculate shaft critical speeds. * Calculate torsional stiffness and strength values for closed and open structural sections. * Predict bending stresses in dual axis bending. * Predict the fatigue life of some simple structural forms based on S-N calculations. Skills: Problem solving; numeracy; working independently. Content: One degree of freedom systems: free and forced vibration; base excited motion; unbalance excitation; vibration isolation. Torsion of open and closed structural sections, dual axis bending. Stress concentration, fatigue strength and cumulative damage in structural components. Solid mechanics laboratory experiment. |