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Using Selected edges makes all selected edges rigidly connected to the point on the beam.
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For Distance (Automatic), all parts on the shell edge, which are within the default distance from the beam point, are connected. This distance is determined by the cross section properties of the beam. It is contained in the variable beam.re as described in the documentation for The Beam Interface.
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For Distance (Manual) enter a Connection radius rc. All parts on the shell edge, which are within the given distance from the beam point, are connected.
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For Connection criterion enter a Boolean expression in the text field. The beam is connected to the selected shell edge wherever the expression has a nonzero value. The default value is 1, which is equivalent to using the Selected edges option.
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For Offset vector enter values for d0 in the table. The offset is the vector from the reference surface of the shell to the actual position of the beam.
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Using Selected boundaries makes all selected boundaries rigidly connected to the point on the beam.
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For Distance (Automatic), all parts on the shell boundary, which are within a default distance from the beam point, are connected. This distance is determined by the cross section properties of the beam. It is contained in the variable beam.re as described in the documentation for The Beam Interface.
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For Distance (Manual) enter a Connection radius rc. All parts on the shell edge, which are within the given distance from the beam point, are connected.
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For Connection criterion enter a Boolean expression in the text field. The beam is connected to the selected shell boundary wherever the expression has a nonzero values. The default value is 1, which is equivalent to using the Selected boundaries option.
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When there are many interconnected constraints, it may also be useful to change Null-Space Function to Orthonormal or Explicit — Orthonormal, but doing so may increase the memory consumption significantly.
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Examples of all types of couplings between shells and beams are shown in Connecting Shells and Beams: Application Library path Structural_Mechanics_Module/Beams_and_Shells/shell_beam_connection
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