standard and has been opened read-only to prevent modification. Find text or tools ( PART 2 (a) Your company is thinking of replacing a pair of cast iron gears with grade 2 through hardened steel gears. The life of the pinion is 10^9 cycles. Assuming all operating conditions stay the same, determine the most cost-effective ($/cu. ft.) option between the iron and steel gears based on AGMA contact stress analysis only. Performance between the two options should be the same. (40 points) The hardness of the cast iron gears is HB=225, Sc= (350*HB) psi The cost of cast iron is ($0.075+ $0.0015*HB) per lb. The density of cast iron is 430 lbs./cu. ft. The cost of the Steel is ($0.01 + $0.001*HB) per lb. The density of steel is 460 lbs./cu. ft.
standard and has been opened read-only to prevent modification. Find text or tools ( PART 2 (a) Your company is thinking of replacing a pair of cast iron gears with grade 2 through hardened steel gears. The life of the pinion is 10^9 cycles. Assuming all operating conditions stay the same, determine the most cost-effective ($/cu. ft.) option between the iron and steel gears based on AGMA contact stress analysis only. Performance between the two options should be the same. (40 points) The hardness of the cast iron gears is HB=225, Sc= (350*HB) psi The cost of cast iron is ($0.075+ $0.0015*HB) per lb. The density of cast iron is 430 lbs./cu. ft. The cost of the Steel is ($0.01 + $0.001*HB) per lb. The density of steel is 460 lbs./cu. ft.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:standard and has been opened read-only to prevent modification.
Find text or tools (
PART 2
(a)
Your company is thinking of replacing a pair of cast iron gears with grade 2 through hardened steel
gears. The life of the pinion is 10^9 cycles. Assuming all operating conditions stay the same, determine
the most cost-effective ($/cu. ft.) option between the iron and steel gears based on AGMA contact
stress analysis only. Performance between the two options should be the same. (40 points)
The hardness of the cast iron gears is
HB=225, Sc= (350*HB) psi
The cost of cast iron is
($0.075+ $0.0015*HB) per lb.
The density of cast iron is
430 lbs./cu. ft.
The cost of the Steel is
($0.01 + $0.001*HB) per lb.
The density of steel is
460 lbs./cu. ft.
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