Begin with a 1 in square thin wall steel tube, wall thickness t 0 05 in, length 40 in, then introduce corner radii of inside radii ri, with allowable shear stress tau all of 11 500 psi, shear modulus of 11 5(106) psi now form a table Use a column of inside corner radii in the range 0 le ri le 0 45 ...

1 40 in Tall 11 500 psi G 115106 psi t 0050 in Tmr12 r 0025 for r 0 0 for r 0 Eq 345 Eq 346 ...

Begin with a 1-in-square thin-wall steel tube, wall thickness t = 0.05 in, length 40 in, then

Question:

Begin with a 1-in-square thin-wall steel tube, wall thickness t = 0.05 in, length 40 in, then introduce corner radii of inside radii ri, with allowable shear stress τall of 11 500 psi, shear modulus of 11.5(106) psi; now form a table. Use a column of inside corner radii in the range 0 ≤ ri ≤ 0.45 in. Useful columns include median line radius rm , periphery of the median line Lm , area enclosed by median curve, torque T, and the angular twist θ. The cross section will vary from square to circular round. A computer program will reduce the calculation effort. Study the table. What have you learned?