What is the applicable range of bending normal stress formula?
A. Pure bending or transverse bending of slender beams
B. Cross section inertia product Iyz > 0
C. Plastic deformation stage
The maximum normal stress of transverse bending will not occur in?
A. On the section with the maximum bending moment of the constant section beam.
B. On the neutral axis
C. Farthest from the neutral axis.
Which of the following cases must consider bending shear stress?
A. The span of the beam is large（l / h > 5）
B. A large load is applied near the support
C. When the bending moment is negative
The shear stress coefficient circle K is (?).
A. 2
B. 3/2
C. 1.2
D. 4/3
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