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Published byGeorge Galley Modified over 2 years ago

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CM_PWR Drop Test Structural FEA

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Objectives Simulate Drop Test from 3 feet using Algor simulation Produce an accurate Finite Element Analysis of the event

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Materials Test 1 - Aluminum

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Simulated Forces Test 1 & 2

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Analysis

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Results Maximum Principal Stress – 1235 psi 6061- O temper Aluminum Max Yield Strength ~ 8000 psi 6061- T6 Aluminum Max Yield Strength ~ 35000 psi

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Materials Test 2 - Delrin

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Analysis

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Results Maximum Principal Stress – 1370 psi Delrin 500MP NC010 Max Yield Strength ~ 10200 psi

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CM_PWR Thermal Test Structural FEA

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Simulated Test Conditions Transient Thermal Analysis 3 Hot Spots 0-6 min – 15 watts of Heat Generated 6-7 min – ramp up to 45 watts of Heat Generated 7-8 min – Full 45 watts of Heat Generated

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Simulated Test Conditions Initial Temperature – 32º C (90º F) Convection Coefficient – 3.2 J/(sºCm 2) Surrounding air at 32º C Density – 1.2096 kg/m 3 Prandtl No. – 0.71 Thermal Conductivity – 0.0257 W/mºC

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Results Test 1 –Aluminum Body & Base

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Results Test 2 – DuPont Delrin Body & Aluminum Base

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Alternate Design Heat sink on the bottom of the base plate 5º C reduction at 6 minutes 12º C reduction at 8 minutes 48 in 2 increase in area 0.038 lbm mass addition

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Results Test 3 – DuPont Delrin Body & Aluminum (w/ Fins) Base

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