Automotive Dynamics and Safety | Quarter Car Modelling

UNIVERSITYOF HERTFORDSHIRE
School of Engineering and Technology
COURSEWORK ASSIGNMENT
Module Title: Automotive dynamics
and safety Module Code: 7AAD0054
Assignment Title: Quarter car
modelling Individual Assignment
Tutor: Mahmoud Chizari Internal Moderator: Marzio
Grasso
Student ID Number ONLY: Year Code:
Marks Awarded %:
This assignment is worth 15% of
the overall assessment for the
coursework.
Marks Awarded after Lateness Penalty
applied %:
Penalties for Late Submissions
 Late submission of any item of coursework will be capped at a minimum
pass mark if received up to one week late. Any submission received more
than one week late will be awarded a mark of zero.
 Late submission of referred coursework will automatically be awarded a
mark of zero.
 Note: The School operates a strict policy on late submission.
StudyNet marks all work submitted late, even by one second, as
Late, in which case the above late penalties will be applied.
Where genuine serious adverse circumstances apply, you may
apply for an extension to the hand-in date, provided the
extension is requested a reasonable period in advance of the
deadline. However, you are warned that lateness due to network
congestion (either at the University or on your local network),
difficulty with filenames, poor time management and similar
issues will not be considered as admissible circumstances. For
this reason, you are advised to submit at least one hour before
the deadline.
Please refer to your student handbook for details about the grading schemes
used by the School when assessing your work. Guidance on assessment will
also be given in the Module Guide.
Guidance on avoiding academic assessment offences such as plagiarism and
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UNIVERSITYOF HERTFORDSHIRE
School of Engineering and Technology
collusion is given at this URL:
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Internal Moderator to see.
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UNIVERSITYOF HERTFORDSHIRE
School of Engineering and Technology
ASSIGNMENT BRIEF
Students, you should delete this section before submitting your
work.
This Assignment assesses the following module Learning Outcomes
(Take these from the module DMD):
This assignment aims to enhance students’ knowledge on applied computer
simulation and practical methods to analyse vehicles dynamics and vibration.
The successful student will be able to;
 Apply analysis techniques to load an active suspension example
 Use commercial packages to model quarter car model with an aim to
understand;
 A method of characterizing the Newton laws for modelling oscillating
behaviour
 A theoretical approach to establish calculation of a 2 degree of freedom
system
 the impact of the modelling choices to the accuracy of results under
different loading conditions
 understands subtle different approaches to model a vibrating system
 how these findings can be used to improve the actual suspension
system
 The assignment will reinforce a student to;
 analyse an oscillating structural event such as frequencies and shape
modes.
 understand the fundamental differences to structural behaviour under
different modal assumptions (boundary conditions, load combinations)
 understand how loads can develop through an assembly. The chosen
vehicle part should belong to this simple assembly
 compare theoretical outputs to the computer models
 appreciate how a fundamental approach to simulation can be used to
derive structural performance.
Assignment Brief:
For the purposes of this assignment you have been tasked with simulating
a simplified model of a quarter car active suspension. You are encouraged
to consider the identified loading scenarios and complete the tasks of this
assignment. You may develop your own assumptions under your identified
loading/displacement scenarios and provide a clear evaluation on the
oscillating system when experiencing road conditions. Your defined
assumptions should be based on a clear loading and boundary condition
you may use to assess these solutions. These should lead you to develop
your own Simulink model. In final stage a comparison should be made on
the theoretical and Simulink models.
Please provide a report with your assumptions, calculations, solutions and
observations as follows;
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UNIVERSITYOF HERTFORDSHIRE
School of Engineering and Technology
• Your assumptions in terms of design, requirements and measurables
• State clearly your requirements and their limits
• Justify your model choices and calculate their influence on its
performance
• Compare theoretical and simulation findings for differences and
similarities
• Highlight design recommendations which can improve the function of
the design.
Important notes:
All students must submit their individual report through Canvas.
The mark will be awarded to individual within the Canvas.
Submission Requirements:
 Students must run the computer model and compare the finding with
theoretical method.
 The report must be submitted using provided template.
Please see brief below in this document for upload information.
This assignment is worth 15% of the overall assessment for this module.
Marks awarded for:
The assignment contains 5 tasks to be answered by all students.
Each task worth an equal 3 marks of total 15 marks for this assignment.
Please see blow document for detail of the tasks.
A note to the Students:
1. For undergraduate modules, a score above 40% represent a pass
performance at honours level.
2. For postgraduate modules, a score of 50% or above represents a pass
mark.
3. Modules may have several components of assessment and may
require a pass in all elements. For further details, please consult the
relevant Module Guide or ask the Module Leader.
Typical (hours) required by the student(s) to complete the assignment: hours
Date Work handed
out:
Week 32
Please check your
timetable for your time
slot.
Date Work to be
handed in:
Week 36
Please check your
timetable for your time
slot.
Target Date for the
return of the marked
assignment:
4 weeks after the
deadline
Type of Feedback to be given for this assignment:
Comments will be given on marked report through Canvas.
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