38 torsional moment diagram
The bending moment of the supported beam b2 transfers a torsional moment M T =M/2=40.4/2=20.2 kNm onto the supporting beam b1, as shown on the corresponding diagram of torsional moments. In conclusion, the supporting beam b1 should be designed for torsion. If you put a steel beam between two columns and stand in the middle of that beam you've created a moment in the beam, a bending along central axis. If while in the middle of the beam, you welded another beam perpendicular to the first, and then walked to the end of the second beam, you would create torsion, a twisting action, on the original beam. In this video, we solve a torque diagram without having to use equations. By simply looking at the external loadings, we can easily draw the internal torque... Torsional moment diagram