Question

A/C unit duct heated....

im airunit duct = 84 and heated from a ferrum temp. Eind: come up with a formula for (AT) required to buckle duct laus dimensions fif the foxed supports are replaced by pn joints, what would be (AT) . E= 27X10² Asi ot x = 16x10-6 F - Yield strength=40ksi , will duct yield before bucking Explan w/ math. What would be AT @ yielding? + mat. propertie 2 ab Variables) مد .8" interror, i exterior ATO

Answer 1

son :- ATE Thermal stress o-QAT E " Thermal stress o = by yield stress - 40ksi - 16 X10 Veo E = 27 % 103 ksi -6 + o=XAT E 40 = 16 x 106 x AT X 27 X10 → 40 = 0:432 AT AT= 92.59 °F Answer