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Info

NOTE: Slight displacement discontinuity should be expected along any edge constraint. This discontinuity is sufficiently small relative to other deformations.


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Related Incidents:

  • Incident 28912: Explanation by bm that small displacement discontinuity can be expected at edge constraint.



Info

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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Related Incidents:

  • Incident 48674: Modal Analysis - Static and Dynamic Load Participation Ratios


Example

An example edge constraint is shown in Figure 1:

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