
#1
Oct1608, 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 inlbs D = 1.72 (Tmax/σmax)^1/3 Any help would be appreciated. Regards 



#2
Oct1708, 07:01 AM

Sci Advisor
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.



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