【Daily Question】Theoretical Foundation 2020.04.14
Thread Content
Multiple-choice question: The cross-section of the beam is a thin-walled I-shaped section as shown in the diagram, with the z-axis being the neutral axis of the section. Assuming that the shear force on this section acts vertically downward, the maximum bending shear stress in this section occurs at ( ). (A) 4 points at the neutral axis of the flange; (B) 2 points where the extension line of the upper edge of the web intersects the flange; (C) 1 point at the upper end of the left flange; (D) 3 points on the upper edge of the web. Answer: B. Hint: An additional reward will be given to those who can explain the solution process; the answer can be found in the response!
D) 3 points on the upper edge of the web