# MECH08005 2019 Applied Mechanics

### General Details

Full Title
Applied Mechanics
Transcript Title
Appld. Mechs 3
Code
MECH08005
Attendance
N/A %
Subject Area
MECH - Mechanics
Department
MEMA - Mech and Manufact Eng
Level
08 - NFQ Level 8
Credit
05 - 05 Credits
Duration
Semester
Fee
Start Term
2019 - Full Academic Year 2019-20
End Term
9999 - The End of Time
Author(s)
Molua Donohoe, Sean Dalton, Declan Sheridan
Programme Membership
SG_EMECH_H08 202000 Bachelor of Engineering (Honours) in Mechanical Engineering
Description

This module builds on the learning from mechanics and materials previously covered, and studies stress in bending and deflection of beams in bending, plus eccentric load and stress concentration.

### Learning Outcomes

On completion of this module the learner will/should be able to;

1.

Compute the stress in pressure vessels which do not fulfil the criteria of being thin walled.

2.

Analyse the stress in bending of commonly used cross sections.

3.

Compute the stress when the loads are not applied centrally.

4.

Calculate the slope and deflection of beams in bending.

5.

Use the relationship between the elastic constants to determine their values.

6.

Analyse the stress induced at discontinuities such as holes drilled into components.

7.

Determine the safe working loads for columns which are resisting axially compressive loads.

### Teaching and Learning Strategies

There will be 4 hours of lectures, where the theory will be covered and multiple examples demonstrated. Each week there will also be a tutorial or practical based on the previous weeks lecture.

### Module Assessment Strategies

The learning outcomes may be assessed by laboratory reports or assignments, plus assessments at various times during the semester plus an end of semester examination

### Repeat Assessments

Repeat assessment will be by way of sitting another examination on the subject. Alternatively, at the discretion of the lecturer, assignments covering the deficient areas of the course may be set.

### Indicative Syllabus

Bending stresses: Use the σ / y= M / I= E / R formula determine the stress induced on both surfaces when a beam is being bent.

Deflection and slope of beams:  Determine how much a beam will bend when a bending stress is applied.

Eccentric loading: When a load is applied off-centre it will cause bending to occur, students will calculate the stress induced due to the eccentricity of the load.

Relationship between elastic constants and use of strain gauges: How do Young's Modulus, Modulus of Rigidity, Poisson's ratio and Bulk Modulus relate to each other.

Stress concentration: Stress builds up more where there are discontinuities such as a hole or a fillet. Engineers need to be able to determine the stress where these appear in their designs, so their designs do not unexpectedly fail.

Buckling of columns: When an axial compressive load is applied to a column it may buckle or bend and fail catastrophically. Use the correct formula for the fixings used to determine the critical load for the column.

Thick walled pressure vessels: Use Lame's equations to determine the stress on the inner and out surfaces of non thin walled pressure vessels.

### Coursework & Assessment Breakdown

Coursework & Continuous Assessment
30 %
End of Semester / Year Formal Exam
70 %

### Coursework Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Tutorials Continuous Assessment Assessment 30 % OnGoing 1,2,3,4,5,6,7

### End of Semester / Year Assessment

Title Type Form Percent Week Learning Outcomes Assessed
1 Final Exam Final Exam Closed Book Exam 70 % End of Semester 1,2,3,4,5,6,7

Type Location Description Hours Frequency Avg Workload
Lecture Flat Classroom Lecture 4 Weekly 4.00
Tutorial Engineering Laboratory Tutorial or demonstration 1 Weekly 1.00
Total Full Time Average Weekly Learner Contact Time 5.00 Hours