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Module Specifications

Archived Version 2010 - 2011

Module Title Mechanics of Machines 2
Module Code MM306
School School of Mechanical and Manufacturing Engineering

Online Module Resources

Module Co-ordinatorDr Paul YoungOffice NumberS374
NFQ level 8 Credit Rating 5
Pre-requisite None
Co-requisite None
Compatibles None
Incompatibles None

To build on Mechanics of Machines 1 by adding Power transmission: gears, belts, clutches. Balancing of shafts Gyroscopic motion Dynamics (vibration) of mechanical systems in free, forced and damped modes Measurement of properties of dynamic systems

Learning Outcomes

1. Analyse and design power transmissions using gears, clutches and belts.
2. Balance shafts statically and dynamically using vector calculus
3. Calculate the natural frequency, damped frequency of single degree of freedom systems
4. Design a vibration isolation system and calculate the response to input forces
5. Undertake laboratory practicals and report scientifically on them in reports and poster form

Workload Full-time hours per semester
Type Hours Description
Laboratory12In the lab
Lecture24No Description
Tutorial12No Description
Assignment Completion6Poster
Independent Study70Tutorial questions & revision
Total Workload: 136

All module information is indicative and subject to change. For further information,students are advised to refer to the University's Marks and Standards and Programme Specific Regulations at: http://www.dcu.ie/registry/examinations/index.shtml

Indicative Content and Learning Activities

Simple and Compound Gears
Direct power transmission, gear ratios, design, module, tooth profile.

Belt Drives
Analysis of interaction between belt and pulley to determine governing equation for slippage. Geometry of system, gear ration and maximum power transmission.

Torque at slip analysis for uniform pressure and constant wear rate. Use of multi-plate clutches. Design for power transmission in a gear train.

Balancing of shafts
Vector analysis of static and dynamic balancing of rotating shafts

Gyroscopic motion
3-D kinetics, calculation the gyroscopic couple under precession of the spin axis.

Free Vibration of SDOF
Equations of motion, undamped, viscous damping, dry friction damping & hysteretic damping

Forced vibration of SDOF system
Sinusoidal Excitation on mass, excitation of base, harmonic excitation.

Assessment Breakdown
Continuous Assessment20% Examination Weight80%
Course Work Breakdown
TypeDescription% of totalAssessment Date
Reassessment Requirement
Resit arrangements are explained by the following categories;
1 = A resit is available for all components of the module
2 = No resit is available for 100% continuous assessment module
3 = No resit is available for the continuous assessment component
Indicative Reading List

  • C.F. Beards: 1995, Beards CF., Engineering Vibration Analysis with Application to Control Systems, Arnold, 034063183X
  • GH Ryder, MD Bennett: 1990, Mechanics of Machines, 2, Industrial Press, Inc., 083113030X
  • Daniel J. Inman: 0, Engineering vibration, Pearson, Upper Saddle River, N.J., 0132281732
  • J. Hannah, R. C. Stephens: 1984, Mechanics of machines, Edward Arnold, London, 0713134712
Other Resources

Programme or List of Programmes
BMEDB.Eng. in Biomedical Engineering
BSSAStudy Abroad (DCU Business School)
BSSAOStudy Abroad (DCU Business School)
CAMB.Eng. Mechanical & Manufacturing Eng
CAMAAccess-C.A. Mechanical & Manufact. Eng.
CAMAEAccess-CA Mech & Manufact Eng English
ECSAStudy Abroad (Engineering & Computing)
ECSAOStudy Abroad (Engineering & Computing)
HMSAStudy Abroad (Humanities & Soc Science)
HMSAOStudy Abroad (Humanities & Soc Science)
MEB.Eng. in Mechatronic Engineering
SHSAStudy Abroad (Science & Health)
SHSAOStudy Abroad (Science & Health)