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
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
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
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
For a bar under axial tension, the sections with the maximum normal stress and maximum shear stress are A: the cross section and inclined section with inclined angle 45°, respectively. B: both the cross sections. C: the inclined section with inclined angle 45°and cross section, respectively. D: both the inclined sections with inclined angle 45°.
For a bar under axial tension, the sections with the maximum normal stress and maximum shear stress are A: the cross section and inclined section with inclined angle 45°, respectively. B: both the cross sections. C: the inclined section with inclined angle 45°and cross section, respectively. D: both the inclined sections with inclined angle 45°.
The torque on the cross section I-I is（ ）N●m。
The torque on the cross section I-I is（ ）N●m。
Why is a pitot type intake divergent in longitudinal cross section?
Why is a pitot type intake divergent in longitudinal cross section?
声束有效截面 effective cross—section of beam
声束有效截面 effective cross—section of beam
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 .
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 .
The section which is cross to optical axis of anisotropic mineral has no pleochroism and absorption.
The section which is cross to optical axis of anisotropic mineral has no pleochroism and absorption.
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 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]1803277f2c06d7c.png[/img] B: [img=229x233]1803277f373c880.png[/img] C: [img=265x251]1803277f41bd72e.png[/img] D: [img=255x251]1803277f4db7030.png[/img]