Finite Element Analysis (FEA) is a valuable design tool which can be utilized to offer a simulated
predication of how complex 3D geometry will perform under certain loading conditions. Design software
such as Solidworks can make the task relatively simple but the information given to the software and
interpretation of the results requires significant understanding of the application. It is for this reason that a
detailed report should accompany such analysis to convey the rationale for the study.
2.1 The Task
You are to use Solidworks Simulation Xpress Analysis Wizard to analyse the geometry of the bracket as
detailed in fig 1. Please pay careful attention not only to the geometry of the bracket but also the
installation and loading condition. The loading condition is to be considered as a loose pin or shackle
being pulled. Please note, you may model this geometry from scratch using the drawing or alternatively
use the Solidworks part file downloadable from Sunspace.
You will be awarded marks for Part A as follows:
Appropriate fixtures applied to the model to replicate real life application. 5 marks
Appropriate loads applied to the model to replicate real life application. 5 marks
Application of correct material. 5 marks
A written description to explain the reason for adding the fixtures and loads in the way you did.
A written commentary to conclude the results, this should include as a minimum, reporting of the
maximum stress and displacement experienced by the component. Some analysis of the results
with respect to the material yield strength should also be included. 10 marks
Once the initial analysis is complete, you are to use the results to inform a redesigned bracket and
validate this with FEA. The technical performance of the bracket should be the focus of the re-design and
thus you do not need to worry too much about other factors such as the manufacturability. A suitable
starting target for the re-design should be that you are aiming to reduce the weight of the bracket by 10%
minimum, without increasing the maximum deflection by more than 10%. You should not be constrained
by these targets however, you may find these easy to exceed or you may find them extremely
challenging, the result itself is not such a concern but your documented approach and clear reporting of
the findings are of importance. Optimise the bracket to the best of your ability.
The constraints of the redesign are:
1) All fixing points of the bracket must remain the same, size and position.
2) The load bearing featuremust undergo no modification in terms of size or position.
3) The load itself must be the same size and direction.
The variables you are permitted to change are:
1) The geometry of the bracket.
2) The material of the bracket.
Marks for Part B will be awarded as follows:
Rationale for improvements based on analysis from the initial bracket. 20 marks
EAT216 FEA Assignment 2015-2016 Page 2 of 3
Documentation to show that comparable testing between the original and redesigned bracket has
occurred. 10 marks
A conclusion which reports the analysis results of the re-designed bracket compares the results
with original. This should include as a minimum, reporting of the maximum stress and
displacement experienced by the component. Some analysis of the results with respect to the
material yield strength should also be included. 20marks
Accurate documentation of the design changes made. 10 marks
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