Question

_{9) Application of stress transformation. Determine normal stress due to P and shear stress due to T. Understand the subscripts of these stress components. Apply the transformation equations to get the normal and shear stress on the weld (need figure out the angle first). PROBLEM 7.19 A steel pipe of 12-in. outer diameter is fabricated from 1-in-thick plate by welding along a helix that forms an angle of 22.50 with a plane perpendicular to the axis of the pipe. Knowing that a 40-kip axial force P and an 80-kip in. torque T, each directed as shown, are applied to the pipe, determine o and t in directions, respectively, normal and tangential to the weld. Weld 22.5°
ANSWER QUESTION 9 FOR 7.19. PLEASE AND THANK YOU.}

Answer 1

4. — 12 in ( - ). – 6 ли t = 0. 2s in = 5.75 in. 4 = п 16-с) спів? – янг) = 4.23 8, in* 1- TG*- с) - It"- -7s') – зік, сам" C = C₂-t 4. 3344 kg j, So63 км - - - - - - у звички 9. 224 та — (ko) (6) . so63 k& 318 67 -0 y = - 4.3 344 Кі Ту = • fo6 3 ku.

choose the x and y'axes respectively tangential and normal to weld. Then ow= To Try 0=22.5 Login - 5tog - oamoy cospo - Joy, sinao. =(-4.3344) -[-(-4.2544) 6:45 - 1.5063 sin45. Ty' = -4.76 Ksi Tayo - - () cin20 + Tag Cot2B --[(- 4.3344) sin45 + 1.5063 Cos 45 y = – 0.467 ksi