中国大学MOOC: A beam with rectangular cross section is subjected to pure bending. The normal stress distribution on the cross section should be
举一反三
- A beam with rectangular cross section is subjected to pure bending. The normal stress distribution on the cross section should be A: [img=223x234]1803277f2c06d7c.png[/img] B: [img=229x233]1803277f373c880.png[/img] C: [img=265x251]1803277f41bd72e.png[/img] D: [img=255x251]1803277f4db7030.png[/img]
- A beam with rectangular cross section is subjected to pure bending. The normal stress distribution on the cross section should be A: [img=223x234]1803a10b99083e0.png[/img] B: [img=229x233]1803a10ba37dd25.png[/img] C: [img=265x251]1803a10bae0cf20.png[/img] D: [img=255x251]1803a10bb9dd0ef.png[/img]
- The cross section of a straight beam remains plane when the beam deforms due to bending. This causes ( ) on one side of the beam and ( ) on the other side. The neutral axis is subjected to ( ) .? normal stress; shear stress; zero stress|tensile stress; compressive stress; zero stress|compressive stress; tensile stress; maximum normal stress|shear stress; normal stress; zero stress
- If the normal stress on the cross section of the axial tensile rod is σ, then the normal stress and shear stress on the 45° degrees section are .
- 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