Tower formula: B=2/3EA problem
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This post was last edited by FMSD on 2016-3-15 at 12:16. The formula used in the calculation of towers or pressure vessels is: B=2/3EA. The 2 in this formula should refer to the 2 in the denominator of the formula for calculating the maximum stress in a cylinder under pressure, namely PD/(2t). I believe that if a tower is subjected only to axial compression (without considering the operating pressure), the allowable stress for axial compression should be EA divided by a stability safety factor of 3. Please explain this to me, experts
This post was last edited by “One Table of Sweet and Sour Pork” on March 15, 2016, at 13:42. According to the original poster’s logic, when there is axial compression, B should be equal to 4EA divided by the stability safety factor of 3. :Lol: I can’t do it either; I’ll just wait for an expert
The 4 in your formula represents the stress σ on the cross-section under pressure, which is given by σ = PD/(2t). The stress σ on the cross-section, namely σ = PD/(4t), is half of the longitudinal stress σ = PD/(2t); therefore, there is no need to calculate this stress
I would like to ask how the 2 in 2/3 is derived. Why is it 2 times the denominator?