Register to reply

Shaft sizing question

by DADDYJ
Tags: shaft, sizing
Share this thread:
DADDYJ
#1
Oct16-08, 08:20 PM
P: 2
Attempting to use the formula:
D = 1.72 (Tmax/σmax)^1/3

In my case I do not know σmax or at least how to calculate it from material properties.
Material is 1045
UTS 84800
YTS 74300
Tmax = 591.55 in-lbs

D = 1.72 (Tmax/σmax)^1/3

Any help would be appreciated.

Regards
Phys.Org News Partner Science news on Phys.org
Sapphire talk enlivens guesswork over iPhone 6
Geneticists offer clues to better rice, tomato crops
UConn makes 3-D copies of antique instrument parts
FredGarvin
#2
Oct17-08, 07:01 AM
Sci Advisor
FredGarvin's Avatar
P: 5,095
As a very rough pass, you can use your yield strength as [tex]\sigma_{max}[/tex]. Your equation is essentially assuming a set relationship for ductile materials and the relationship between shear stresses and normal stresses. This is for static, pure shear only.


Register to reply

Related Discussions
Sizing of DC motors Electrical Engineering 4
Shaft Key Sizing Engineering, Comp Sci, & Technology Homework 0
Basic Question: Multiple Torques on same shaft... General Engineering 8
Sizing Secondary Systems Engineering Systems & Design 0
Pre-sizing General Discussion 23