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ST7-1.50.70.2 Beam Bending and Nodal Rotational Stiffness
This Webnote illustrates the changing bending moment at the ends of beams subjected to uniformly distributed loads due to the effect of nodal restraints and joint connections. Consider a beam subjected to a uniformly distributed load as shown in the illustration. If the ends of the beam are pinned (nodes assigned zero rotational stiffness) then the bending moment at these ends is zero.  If the ends of the beam are fully fixed (nodes assigned infinite rotational stiffness) then the bending...
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