The section where the bending moment diagram has abrupt change is: ()
A: Section with concentrated load
B: Section with zero shear force
C: Section with zero load
D: Section with concentrated couple
A: Section with concentrated load
B: Section with zero shear force
C: Section with zero load
D: Section with concentrated couple
举一反三
- In the following cases, ( ) belongs to pure bending. A: The external loads act on the longitudinal symmetric plane of the member; B: The members are only bent without torsion and tension deformation; C: The load on the member is only concentrated couples; D: There is no shear force on each cross section of the member, and the bending moment is a constant.
- If the section figure has a symmetry axis, then for the figure ( ) to its symmetry axis. A: Both the static moment of inertia and the moment of inertia are not zero; B: Both the static moment of inertia and the moment of inertia are zero; C: The static moment of inertia is not zero, the moment of inertia is zero; D: The static moment of inertia is zero, the moment of inertia is not zero.
- The three hinged arch designed according to the rational arch axis can make the bending moment of each section in the arch zero under any load. A: 正确 B: 错误
- In practical use, only the load which is close to pivot cross section needs to consider the change of mc. ( )
- Which section best explains why Sam 's asking so many questions in Section C? A: Section B B: Section D C: Section G D: Section I