举一反三
- 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
- 声束有效截面 effective cross—section of beam
- 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 rotation angle of the cross section at the maximum deflection of the beam must be equal to zero. ( )
- The rotation angle of the cross section at the maximum deflection of the beam must be equal to zero. ( ) A: 正确 B: 错误
内容
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The torque on the cross section I-I is（ ）N●m。
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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]
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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]
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An equal cross-section straight rod is exerted by the loads shown in the figure, the cross-sectional area of the rod is A=100mm2. Determine the normal stress on the cross-section m-k.http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/23fd5f3f3d6d4bb99e3cc743abf84ff6.png
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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