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NOTE: Slight displacement discontinuity should be expected along any edge constraint. This discontinuity is sufficiently small relative to other deformations.
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NOTE: When an edge constraint is assigned to a series of joints, and some of those joints fall within the auto-merge tolerance of the end nodes, a rigid-body constraint is applied to avoid ill-conditioning within the stiffness matrix. This may cause coupling within the constraint, leading to unintended behavior.
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Example
An example edge constraint is shown in Figure 1:
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