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Engineering Vibrations and Noise

Module code: MEP55B14 · Semester: Semester 2 (option)

Themes: Theme 1: Energy/Fluids; Theme 2: Bioengineering/Manufacturing; Theme 3: Mechanical/Manufacturing

Resources​

Questions by Year​

0 of 5 done · tick papers and add notes as you go

Papers open on tcd.ie (sign in to TCD first).

Topics

  • Forced SDOF vibration, measurement and isolation LO1, LO4
  • MDOF free and forced vibration; vibration absorbers LO1–2
  • Modal analysis: stiffness and flexibility matrices, mode shapes LO2
  • Continuous systems: longitudinal, torsional and transverse vibration LO3
  • Acoustics: sound propagation, dB(A)/dB(C), octave bands LO1, LO7
  • Absorption and insulation: Sabine/Eyring, transmission loss, mass law, room acoustics LO4
  • Measurement: calibration, FFT, power spectral density, coherence, modal testing LO5
  • Rod and beam finite elements; commercial FE software LO6
  • Exposure assessment and legislation (EU Directive 2002/44/EC, ISO standards) LO7
Learning outcomes
  1. Derive equations of motion for SDOF, MDOF and continuous systems, and apply wave propagation to acoustics
  2. Solve free and forced vibration with modal analysis
  3. Analyse longitudinal, torsional and transverse vibration of continuous systems
  4. Design vibration isolation and noise control (absorption and insulation) to codes and standards
  5. Plan and carry out noise and vibration measurements and compare with predictions
  6. Use FE or noise mapping software to predict a real system and check it against data
  7. Evaluate effects on health, safety and buildings using regulations and metrics
  8. Write a formal technical report on a real noise and vibration problem

Summarised from the module descriptor, checked November 2026.