In practical use, only the load which is close to pivot cross section needs to consider the change of mc. ( )
举一反三
- In practical use, only the load which is close to pivot cross section needs to consider the change of mc. ( ) A: 正确 B: 错误
- For axial compression members, because the normal stress on the cross section is evenly distributed, it is not necessary to consider the reasonable shape of the cross section
- 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
- The section which is cross to optical axis of anisotropic mineral has no pleochroism and absorption.
- 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.