bending stress


In structural frame analysis, internal tension or compression stress along the length of a beam when it curves (flexes) in response to an external, non-axial load.

Example:

When a force load is applied uniformly and perpendicular to the top of a beam, the beam curves down in response.

  • Compressive stresses result on the top portion of the beam. These are indicated by negative values.

  • The stress along the neutral axis (the horizontal plane in the center) is zero.

  • Tensile stresses result on the bottom portion of the beam. These are indicated by positive values.

Bending stress plots for tension and compression are shown in beam stress component plots.

beam element nodes blackbody

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