Ansys Granta Assignment
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School
University of Calgary *
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Course
421
Subject
Material Science
Date
Dec 6, 2023
Type
docx
Pages
9
Uploaded by ChefPorcupine3740
SKYLER COOK 30163872
10/8/23
ANSYS GRANTA ASSIGNMENT
Ansys Granta Assignment
Question 1:
a)
The three materials are aluminum nitride, silicon nitride, and alumina. They have the
highest thermal conductivity while maintaining a relatively high electrical resistivity.
b)
The six materials above the index line are silicon carbide, aluminum nitride, boron
carbide, silicon nitride, alumina, and CFRP, epoxy matrix (isotropic). The two families
they belong to are
composites and technical ceramics.
SKYLER COOK 30163872
10/8/23
ANSYS GRANTA ASSIGNMENT
Question
2:
The only biopolymer that has both a higher CO2 footprint and embodied energy than
the conventional plastics are cellulose polymers.
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Question 3:
Medium carbon steel would offer the greatest global energy saving if the consumption
was reduced by 10% unlike silicon which would result in the least amount of energy
savings.
Question 4:
The current options available to us once a material has reached its end-of-life cycle are
to commit to a landfill, combust the material for heat recovery, recycle (or downcycle), or
to re-engineer (refurbish) the material.
Question 5:
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The materials belong to the Natural Materials and Foams families.
Question 6:
Cellulose polymers, polyhydroxyalkanoates, starch-based thermoplastics, and
polylactide.
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Question 7:
For the Strength-Density plot low tungsten alloy was found.
For the Strength-Embodied energy per unit volume plot low alloy steel was found.
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Question 8:
Glass: w=2tCp=3761440=261mm
Concrete: w=2tCp=2321280=181mm
Brick: w=2tCp=2211270=174mm
Straw Bale: w=2tCp=67.7456=148mm
Name
Cost/kg
($/kg)
Density
Width
(m)
Mass per
Unit volume
(kg)
Embodied
Energy (MJ/kg)
Cost per
unit ($)
EE per
Unit (MJ)
Ceramic-
Glass
6.94
2530
0.261
660.33
39.3
$ 4,583
25,951
Concrete-
Structural
0.067
1670
0.181
302.27
4.08
$ 20.25
1,233
Common
Brick
1.39
2020
0.174
351.48
3.34
$ 489
1,174
Straw Bale
0.0306
124
0.148
18.352
4.01
$ 0.56
74
The Straw Bale is the cheapest material per unit volume.
Straw Bale has the lowest embodied energy per unit area, but Common Brick has the
lowest Embodied energy per kg.
Question 9:
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a)
H
km
= 3.7x10
-3
m
0.93
For steel m = 1500
H
km
= 3.7x10
-3
(1500)
0.93
= 3.326 MJ/km
E
S
= 3.326*200000 = 665267.9 MJ
For aluminum m = 1494
H
km
= 3.7x10
-3
(1494)
0.93
= 3.314 MJ/km
E
A
= 3.314*200000 = 662792.8 MJ
Energy Saved:
E
saved
= E
S
- E
A
= 665267.9 - 662792.8 = 2475.1 MJ
b)
Low carbon Steel:
E = 16.2 MJ/kg
m = 20 kg
E
S
= m*E= 16.2*20 = 324 MJ
Age-Hardening wrought Al-alloys:
E = 108 MJ/kg
m = 14 kg
E
A
= m*E = 108*14 = 1512 MJ
Difference:
E = E
S
– E
A
= 324 - 1512 = -1188 MJ
Total Energy Saved:
E
Saved
+ E = 2475.1 + (-1188) = 1342.1 MJ
The switch to aluminum saves energy over the course of the life of a car.
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c)
Current Gas Price = 1.508 $/L
Gas Energy = 35 MJ/L
Energy saved using aluminium = 2475.1 MJ
Total Liters Reduced:
TL = E
Saved
/E
gas
= 2475.1/35 = 70.72 L
Cost increase = 60$
Cost Saving over the life of the car:
TL*GasPrice = 70.71*1.508 = 106.64 $
Total Savings = 106.64 - 60 = 46.64 $
You will save 47$ by switching to the aluminum bumper.
Question 10:
The plot of Electrical Resistance vs Melting point. We find that Tungsten Alloys have the
highest melting point and some of the lowest electrical resistivity meaning it’s a good
conductor. Tungsten Alloys are the best choice for a light bulb filament.
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