Vol.4 | Issue 4 | April 2017
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Ravi Ozarker
GT STRUDL Support Consultant

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How to Model a Rigid Link?

Refer to section 2.6.5 of GT STRUDL Vol 3 Documentation. In addition to this explanation, following example demonstrates how this feature works. In this case the “RIGID SOLID” TYPE is used to create the connection between the cantilever beam’s free end and the supporting column. A load of 10kips is applied at the free end, which should produce 10’ x 10 kip = 10 kip-ft moment at the fixed joint. There should be no internal moment in the cantilever beam.
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Figure 1: Cantilever beam is not Rigid (note significant internal deflection)
Figure 2: Cantilever beam is Rigid (note no significant internal deflection)
Figure 3: Cantilever beam is Rigid (note no internal deflection and hence no internal moment)
$GT STRUDL COMMANDS TO CREATE A RIGID BODY NAMED “RB1” BETWEEN NODES 2 AND 4.

TYPE RIGID SOLID
RIGID BODY INCIDENCES
'RB1' 2 4