Adding loads or constraints to a degree of freedom that has been disconnected using Beam End Release may give unintuitive results. Essentially, the degree of freedom value at the point is defined as the average of the values in the disconnected beams. A prescribed displacement will thus act as a constraint equation, prescribing a weighted sum of the displacements or rotations in the connected beams, but not their individual values.
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Stress Analysis of a Portal Crane: Application Library path Structural_Mechanics_Module/Beams_and_Shells/portal_crane
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