Question

if you could solve this problem that woukd be great, the most important part is how to know which way the transformed moments go which is confusing us. also which way the line is oriented on a Mohrs circle.

The couple M 1.1 kNm acts in a vertical plane and is applied to a beam oriented as shown Determine the stress at point A answer to one decimal placo.) Round the final 40 mm 10 mm 0 mm 10 mm 0m 1,-0614 x 10 mm The stress at point A is n/sMPa

Answer 1

Construct the Mohr's circle using the available values of moments of inertia: 1.254x10 mni yz 0.614x106 mmt 1,,1 D U 20 E 1.894x106 mm

2 2 - 1-254 x106 m horn the (Suno, Mohri's dincle 1s, Rodtius porintipal rmmntob Tnes-itia 1s 2-2785 xlo6mn uNar the prinaipat ames

40 M = 1.2 kN·m Tio 40 1070 10 All dimensions in mm

€45)Cose 5-6)-69s in (25-G-7) (15) Cos(1561) t 45 sin(2567) rsa 60 , 0 5 2 mm) 二 Stren at point n is (0-47 6x 109xC60.052) (о.qq2x166)xby065) , (2-2785x106 e-2295 XI66 -18.5 N/mm",