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BTEC Assignment BriefPearson BTEC Level 3 National Extended Diploma in
Qualification
Engineering
Unit number and title Unit 27: Static Mechanical Principles in Practice
Learning aim(s) (For NQF C: Examine how axial, bending and shear loading affect the
only) design of structural components
Design relating to axial, bending and shear loading
Assignment title
Hugh Campbell
Assessor
Issue date W/B 02/05/23 Submission date W/E 26/05/23
I certify that the evidence submitted for this assignment is
my own. I have clearly referenced any sources used in the
Student Declaration
work. I understand that false declaration is a form of
malpractice.
Student Name Student Signature
You are a second year technical apprentice in a large
manufacturing company producing structural members.
Your supervisor is pleased with your understanding of how
beams perform as structural members. He has asked you to
perform a number of calculations relating to a new project
that involves structural components to check that they are
Vocational Scenario or
fit for purpose in their load carrying capabilities.
Context
The calculations relate to a beam that has to span a
particular width but it must conform to a number of
constraints, minimum radius of curvature and a factor of
safety of 5, and it must be capable of maintaining these
minimum values across a fairly large range of temperatures
given that the beam will be fixed at both ends.
,Task 1 You have been given drawings for a complex structure that
has components carrying axial, bending and shear loads.
These loads have produced stress levels exceeding safe
working values and causing structural failure of
components.
You have been asked to redesign the structure to optimise
its configuration whilst also maintaining strength.
To do this:
Your tutor will provide you with a diagram of a structural
system that has component parts that are in need of
redesign, along with details of the loadings on the system.
The information your tutor provides will include a minimum
factor of safety and a figure for the maximum allowable
deflection of the whole system.
You need to:
Conduct a structural analysis on the major
components of the system. You should include:
a. calculations to determine the tensile or
compressive stress in an axial-loaded
simple component;
b. calculations to consider the effects of
temperature change on one element of the
structure, assuming the component has
fixed ends.
c. Calculations and annotated sketches to
determine shear stresses for a range of
bolted or riveted joints, including a single
shear lap joint and a double shear butt
joint.
You then need to:
You should then use your findings from the structural
analysis to redesign the structure to optimise its
configuration so that it can cope with significant changes in
environmental temperature, and make best use of the
available materials. To do this you need to:
Carry out calculations to ensure the best use is
made of the available materials for the given
loading conditions.
Carry out calculations to assess the impact on the
integrity of the whole structure from increases
and/or decreases in the size of component(s).
Take into consideration features such as factors of
2
BTEC Assignment Brief v1.0
BTEC Internal Assessment QDAM January 2015
, safety, strength to weight ratio and the use of
high strength materials to ensure the components
are fit for purpose.
You need to present your findings in the form of a report.
Checklist of evidence A report containing mathematical modelling relating to the
required analysis of the stresses and strains in given structural
components.
Criteria covered by this task:
Unit/Criteria
To achieve the criteria you must show that you are able to:
reference
27/C.D3 Optimise the physical parameters of a structure ensuring it is fit for
purpose when subject to axial, bending and shear loading.
Analyse accurately the axial stress produced in a rigidly held complex
27/C.M4
structural component when subjected to a combination of axial loading
and temperature change.
27/C.M5 Develop accurately a design for a complex structure that does not fail
when subject to bending and shear loading.
Calculate the axial stress produced in a rigidly held simple structural
27/C.P5
component when subjected to a combination of axial loading and
temperature change.
Calculate the maximum bending stress, the factor of safety in
27/C.P6
operation and minimum radius of curvature for a simply supported
beam carrying concentrated and uniformly distributed loads.
27/C.P7 Calculate the maximum shear stress for a single shear lap joint and a
double shear butt joint for given loading.
Sources of information
to support you with Boyce A., Cooke E., Jones R., Mantovani B., Roberts D.,
this Assignment Weatherill B., (2010) BTEC Level 3 National Engineering
Student Book (Level 3 BTEC National Engineering), Pearson
Educational, ISBN 978 1 84690 754 1
Tooley M. and Dingle L. (2010) BTEC National Engineering,
Elsevier, ISBN 978 0 12 382202 4.
Websites
http://www.engineersedge.com/beam_calc_menu.shtml
http://www.stressebook.com/classical-hand-calculations-in-
structural-analysis/
http://civilengineer.webinfolist.com/structure.htm
http://www.onlinestructuraldesign.com/calculations
Other assessment Data sheets & Data sets
materials attached to
this Assignment Brief
3
BTEC Assignment Brief v1.0
BTEC Internal Assessment QDAM January 2015
, 4
BTEC Assignment Brief v1.0
BTEC Internal Assessment QDAM January 2015
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