Registry

Module Specifications

Archived Version 2021 - 2022

Module Title	Mechanics of Machines 2
Module Code	MM306
School	School of Mechanical and Manufacturing Engineering
Online Module Resources
Module Co-ordinator	Dr Paul Young	Office Number	S374
NFQ level	8	Credit Rating	5
Pre-requisite	None
Co-requisite	None
Compatibles	None
Incompatibles	None

Description

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
6. Simulate and evaluate the performance of Mechanical Designs using Solid Modelling

*Type*	*Hours*	*Description*
Workload	Full-time hours per semester
Laboratory	4	In the lab
Fieldwork	6	Reporting on Lab activity
Tutorial	30	Problem solving questions on Loop with both Formative and Summative Feedback
Lecture	20	Broadcast or recorded lecture material presenting the content of the module.
Assignment Completion	40	Development of simulation model, analytical review and reporting on the detailed contents and reasoning.
Independent Study	25	Reading of background materials, practice for quizzes
Total Workload: 125

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.

Clutches
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 Assessment	100%	Examination Weight	0%

Type	Description	% of total	Assessment Date
Course Work Breakdown

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
Unavailable

Indicative Reading List

C.F. Beards: 1995, Beards CF., Engineering Vibration Analysis with Application to Control Systems, Arnold, 034063183X
Peter R. N. Childs: 2018, Mechanical Design Engineering Handbook, Butterworth-Heinemann, 9780081023686
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

None

Programme or List of Programmes

BMED	B.Eng. in Biomedical Engineering
BMEDI	B.Eng. in Biomedical Engineering
CAM	B.Eng. Mechanical & Manufacturing Eng
CAMAE	Access-CA Mech & Manufact Eng English
CAMI	B.Eng. in Mechanical & Manufacturing Eng
ECSA	Study Abroad (Engineering & Computing)
ECSAO	Study Abroad (Engineering & Computing)
ME	B.Eng. in Mechatronic Engineering
MEI	B.Eng in Mechatronic Engineering
MMAC	Access - MEng. in Mechanical & Manu Eng.

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