Module Overview

Mechanics 2

The aim of the module is to provide the student with an in-depth analysis of stress and strain in engineering design, and the heat treatment of materials

Module Code

MECH H3024

ECTS Credits


*Curricular information is subject to change

Stress Analysis in Design

Brief review of methods of statics. Free body diagrams. Equations of equilibrium. Loading and normal stress. Shear and bearing stress. Loading and normal strain. Shear strain. Hooke’s law, stress-strain diagram. St Venants principle. Stress concentration factors. Transformation of plane stress and strain. Principal stress and strain. Mohr’s circle for plane stress and strain. Measurement of strain, strain rosettes.

Failure Mechanisms

Stability of columns. Euler’s formula for various column end conditions. Bending in beams, stress due to bending. Introduction to fracture mechanics, crack propagation. Critical length of crack. Fatigue introduction, S-N diagrams. Torsion, angle of twist. Stress in spherical and cylindrical thin walled pressure vessels.

Elements of Machine Design

Loading & Stress in Gear Teeth.Spur gears, belts and chains. Stress, stress concentrations in shafts, power transmission in shafts. Keys, keyways and splines. Torque transfer elements. Gear construction, gear trains. Force analysis of spur and helical gears. Power screws and Fasteners.

Heat Treatment

Properties of low, medium and high carbon steels. Steel manufacturing and recycling. Simplified iron-carbon phase diagram. Direct heat treatment of steel. Surface hardening of steel. Ferrous metal heat treatment processes

Engineering Standards

Design safety factors. Material data sheets and design specifications. Engineering standards bodies and recommendations. Health, safety and environmental legislation relevant to mechanical engineering design.

This is a blended learning module , enhanced through interactive on-line or face to face tutorials, practical sessions, presentations, self directed reading and study

Module Content & Assessment
Assessment Breakdown %
Formal Examination70
Other Assessment(s)30