Ansys Granta Assignment

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University of Calgary *

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Material Science

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Dec 6, 2023

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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.
SKYLER COOK 30163872 10/8/23 ANSYS GRANTA ASSIGNMENT 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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SKYLER COOK 30163872 10/8/23 ANSYS GRANTA ASSIGNMENT The materials belong to the Natural Materials and Foams families. Question 6: Cellulose polymers, polyhydroxyalkanoates, starch-based thermoplastics, and polylactide.
SKYLER COOK 30163872 10/8/23 ANSYS GRANTA ASSIGNMENT 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.
SKYLER COOK 30163872 10/8/23 ANSYS GRANTA ASSIGNMENT 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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SKYLER COOK 30163872 10/8/23 ANSYS GRANTA ASSIGNMENT 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.
SKYLER COOK 30163872 10/8/23 ANSYS GRANTA ASSIGNMENT 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.
SKYLER COOK 30163872 10/8/23 ANSYS GRANTA ASSIGNMENT
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