Engineering

ECM3173 - Structural Dynamics (2019)

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MODULE TITLEStructural Dynamics CREDIT VALUE15
MODULE CODEECM3173 MODULE CONVENERDr Julian Londono Monsalve (Coordinator)
DURATION: TERM 1 2 3
DURATION: WEEKS 12 0
Number of Students Taking Module (anticipated) 80
DESCRIPTION - summary of the module content

Much of modern engineering involves structures that move or have parts which move, e.g. automotive/aerospace structures, gas turbines used to propel aircraft or rotating components in machine tools. Even seemingly static structures such as buildings and bridges are subjected to dynamic forces such as earthquakes, wind and human loads.

This module explores techniques for analysing how structures respond to dynamic loading and how they can be designed to avoid adverse effects. The module will initially consider relatively simple structures with one or two degrees of freedom, and then move on to numerical techniques for more complex structures. It will also cover some vibration control measures and techniques for vibration measurement and data analysis.

This module is suitable for all Engineering students who have taken the prerequisite ECM2114 Solid Mechanics module.

AIMS - intentions of the module

The module aims to increase your’ depth of understanding of structural dynamics in Engineering, particularly with respect to vibrations of mechanical, aerospace and civil structures. The module will start from fundamental theory and progress to numerical simulations, measurement techniques and methods of structural vibration control. These are aligned to key research activities of the College and hence the teaching will be informed by recent developments in these areas

 

INTENDED LEARNING OUTCOMES (ILOs) (see assessment section below for how ILOs will be assessed)

This is a constituent module of one or more degree programmes which are accredited by a professional engineering institution under licence from the Engineering Council. The learning outcomes for this module have been mapped to the output standards required for an accredited programme, as listed in the current version of the Engineering Council’s ‘Accreditation of Higher Education Programmes’ document (AHEP-V3).

 

This module contributes to learning outcomes: SM1p-SM3p, SM1m-SM5m, EA1p-EA4p, EA1m-EA4m, EA6m, D4p, D4m, EP1p, EP1m, EP3p, EP3m, EP8p, EP8m, EP9m

 

A full list of the referenced outcomes is provided online: http://intranet.exeter.ac.uk/emps/subjects/engineering/accreditation/

 

The AHEP document can be viewed in full on the Engineering Council’s website, at http://www.engc.org.uk/

 

On successful completion of this module you should be able to:

 

Module Specific Skills and Knowledge

1      Comprehend fundamental theory of free and forced vibration of single­ and multi­degree­of­freedom systems

2      Analyse numerical modelling of dynamics problems

3      Experiment using the measurement of structural dynamic properties and performance

Discipline Specific Skills and Knowledge

4      Develop numerical simulation of engineering problems

5      Recognise the measurement of complex engineering parameters

Personal and Key Transferable / Employment Skills and Knowledge

6      Develop problem solving

7      Use data analysis

8      Enhance report writing

 

SYLLABUS PLAN - summary of the structure and academic content of the module

Introduction

●     importance of dynamics for structural performance

●     examples of state­of­the­art practice

●     high profile dynamics failures and lessons learned

●     rationalisation of real structures into simpler systems amenable for analysis

Review of theory of single­degree­of­freedom systems

●     components of vibrating systems

●     free vibration response (undamped/damped)

●     forced vibration response (harmonic/transient/arbitrary loads)

Theory of multi­degree­of­freedom systems

●     coupling of equations of motion

●     mathematical modelling of damping

●     modal analysis (calculation of eigenvalues/eigenvectors)

●     free vibration response

●     forced vibration response

Numerical modelling

●     structural idealisation

●     use of commercial FE codes, such as ANSYS

Vibration testing and experimental modal analysis

●     fundamental principles ­ input/output relationships of linear systems

●     curve fitting of frequency response function data

●     testing techniques (excitation methods, instrumentation, procedures)

●     validation of modal test results

●     in­service vibration monitoring and structural performance monitoring

Control of vibrations and energy harvesting

●     inherent damping mechanisms

●     vibration control strategies

●     supplementary damping systems (passive, active, semi­active, hybrid)

●     energy harvesting

 

All material will be supplemented by real world case studies as appropriate.

LEARNING AND TEACHING
LEARNING ACTIVITIES AND TEACHING METHODS (given in hours of study time)
Scheduled Learning & Teaching Activities 40.00 Guided Independent Study 110.00 Placement / Study Abroad
DETAILS OF LEARNING ACTIVITIES AND TEACHING METHODS
Category Hours of study time Description
Scheduled learning & teaching activities 22 Lectures
Scheduled learning & teaching activities 15 Tutorial sheets and numerical modelling exercises In Computer rooms
Scheduled learning & teaching activities 3 Lab classes In VES lab measuring vibrations
Guided independent study 110 Private Study and assessment preparation.

 

ASSESSMENT
FORMATIVE ASSESSMENT - for feedback and development purposes; does not count towards module grade
Form of Assessment Size of Assessment (e.g. duration/length) ILOs Assessed Feedback Method
Not applicable      
       
       
       
       

 

SUMMATIVE ASSESSMENT (% of credit)
Coursework 25 Written Exams 75 Practical Exams
DETAILS OF SUMMATIVE ASSESSMENT
Form of Assessment % of Credit Size of Assessment (e.g. duration/length) ILOs Assessed Feedback Method
Written report on simulation and lab work 25 8 pages max 1-8 Commentary on report
Written exam - closed book 75 2 hours - Winter Exam Period 1-7 On request
         
         
         

 

DETAILS OF RE-ASSESSMENT (where required by referral or deferral)
Original Form of Assessment Form of Re-assessment ILOs Re-assessed Time Scale for Re-assessment
Exam and coursework Exam (100%) 1-7 August ref/def period
       
       

 

RE-ASSESSMENT NOTES

Reassessment by examination only

RESOURCES
INDICATIVE LEARNING RESOURCES - The following list is offered as an indication of the type & level of
information that you are expected to consult. Further guidance will be provided by the Module Convener

Basic reading:

ELE: http://vle.exeter.ac.uk/

Web based and Electronic Resources:

●     MATLAB based NDOF software

●     ANSYS tutorials

Other Resources:

●           Laboratory handouts and instrumentation manuals

Reading list for this module:

Type Author Title Edition Publisher Year ISBN Search
Set Inman, DJ Engineering Vibration 2nd Prentice-Hall 2001 013726142x [Library]
Set MS Williams Structural Dynamics CRC Press 0415427320 [Library]
Set DJ Ewins Modal Testing Research Studies Press [Library]
CREDIT VALUE 15 ECTS VALUE 7.5
PRE-REQUISITE MODULES ECM2114
CO-REQUISITE MODULES
NQF LEVEL (FHEQ) 6 AVAILABLE AS DISTANCE LEARNING No
ORIGIN DATE Tuesday 10 July 2018 LAST REVISION DATE Monday 30 September 2019
KEY WORDS SEARCH Structural, Dynamics