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Maes Rhaglen/Programme Area: Technology
TEITL Y CWRS
CÔD
UNED(AU)
ENW /Rhif Adnabod
HNC in General Engineering
Teitl/Cyf Aseiniad
Criteria Graddio
Assignment Number 1 Statics
P3
P1
P2
TZG104417
Unit 102 Mechanical Principles and Applications
COURSE TITLE
CODE
UNIT(S)
NAME /ID No.
Assignment Title/ Ref.
Grading Criteria
M1
Enw’r Tiwtor
Dyddiad Gosodwyd Aseiniad
Dyddiad Cyflwyno
Cytunwyd ar Estyniad gan
T J Coley
13 October 2014
24 November 2014
Yr wyf yn datgan mai gwaith fy hun yw’r hyn a gyflwynir
a gall y Coleg wirio fy ngwaith am lên-ladrad
I declare that the work presented is my own and
that the College may check my work for plagiarism
Name of Tutor
Date Assignment Set
Submission date
Extension agreed by
Dyddiad
Date
Llofnodwyd
Signed
Adborth asesiad/Assignment feedback
Ailgyflwyno yn dilyn adborth /Feedback following resubmission
Criteria Graddio a Dyfarnwyd/ Grading Criteria Awarded:
Criteria
Dyddiad/Date
Dyddiad Derbyn Gwaith
Work received date
Dyddiad ailgyflwyno/
Resubmission date
Llofnod y tiwtor
Dyddiad
Tutor Signature
Date
Maes Cwricwlwm/Curriculum Area:
Technoleg/ Technology
Maes Rhaglen/Programme Area:
Peirianneg/Engineering
Pass Grading criteria:-To achieve a pass grade the evidence must
show that the learner is able to:
P1 calculate the magnitude, direction and position of the line of action of
the resultant and equilibrant of a non-concurrent coplanar force system
containing a minimum of four forces acting in different directions
Feedback:-
P2 calculate the support reactions of a simply supported beam carrying
at least two concentrated loads and a uniformly distributed load
Feedback:-
P3 calculate the induced direct stress, strain and dimensional change in
a component subjected to direct uni-axial loading and the shear stress
and strain in a component subjected to shear loading
Feedback:-
M1 calculate the factor of safety in operation for a component subjected
to combined direct and shear loading against given failure criteria
Feedback:-
N.B. To obtain a merit, a pass must first be achieved, likewise, to obtain a
distinction, a merit must be achieved. The assignments will be contributory
to your grading, but will not provide full opportunity to be graded individually.
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Achieved
Maes Cwricwlwm/Curriculum Area:
Technoleg/ Technology
Maes Rhaglen/Programme Area:
Peirianneg/Engineering
BTEC HIGHER NATIONAL CERTIFICATE IN GENERAL ENGINEERING
MECHANICAL PRINCIPLES
Assignment # 1
This assignment consists of questions covering the following criteria: - P1,
P2, P3, M1
It is essential that you express yourself clearly and concisely both in a
communication and a mathematical sense.
Question 1 (Criterion P1)
Refer to the force system on the plate shown in Figure Q1. State the ‘type’ of system.
(i)
Graphically determine the magnitude and direction of the resultant.
(ii)
Using an analytical method confirm your answer to part (i) and also determine
the perpendicular distance of the resultant from point A.
Question 2 (Criterion P2)
The beam shown in Figure Q2 has a UDL of 380kN/m. Calculate the reactions at the
simple supports.
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Maes Cwricwlwm/Curriculum Area:
Technoleg/ Technology
Maes Rhaglen/Programme Area:
Peirianneg/Engineering
Question 3 (Criterion P3)
(A)
A 2.6m long steel towing bar of solid circular section diameter 45mm is expected
to carry a maximum load of 270 kN. The factor of safety is 4; and for the steel
the UTS is 540 MNm-2 and the Modulus of Elasticity is 200 GNm-2.
(i)
Calculate the actual towing capacity of the bar and state whether the proposed
limit is acceptable.
(ii)
Determine the extension of the bar under the maximum proposed load.
(B)
The structural member shown in Figure Q3 is joined by a single 10mm diameter
rivet.
(i)
For the 45kN tensile load applied as shown determine the shear stress in the
rivet
Question 4 (Criterion M1)
For the rivet in Question 3 B:
(i)
Using a value of 320 MNm-2 for the UTS of the rivet material, calculate the Factor
of Safety at the load shown.
(iii)
It is recommended for this application and under this tensile load that the Factor
of Safety applied should be 4. Comment on this with possible suggestions based
on the value of the Factor of Safety found in part (i). You should base your
suggestions on scientific principles and on practical considerations.
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Maes Cwricwlwm/Curriculum Area:
Technoleg/ Technology
Maes Rhaglen/Programme Area:
Peirianneg/Engineering
Figure Q1
42N
52N
60o
28o
Plate 0.8 square
Point A
45o
64N
37N
Figure Q2
0.8m
1.6m
410kN
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0.6m
650kN
Maes Cwricwlwm/Curriculum Area:
Technoleg/ Technology
Maes Rhaglen/Programme Area:
Peirianneg/Engineering
Fig Q3
44o
45kN
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45kN
Maes Cwricwlwm/Curriculum Area:
Technoleg/ Technology
Maes Rhaglen/Programme Area:
Peirianneg/Engineering
Submission Evidence
The assignment: - Assignment 1 Statics
Submitted by ………………………………………………..
On ……………………………………………
Was received by ……………………………………………..
On ……………………………………………
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