alwayslearning Posted March 13 Report Share Posted March 13 I have been given a model which uses Cell Periodicity to model a unit cell representing a large repetitive structure. Periodic boundary conditions are used on the outer boundaries of this unit cell. When I run the model however, I get this message: Boundary similarity and source/destination incompatibility Where source and destination are defined - not sure what it means? This is where "Boundary similarity: src2dst_bp3_cp1_sim5" are defined. I have selected it in the model to the right. Anyone more experienced than me who might have an idea of whats going on? Quote Link to comment Share on other sites More sharing options...
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G B Reid MIMechE, SIMarEST Posted April 30 Report Share Posted April 30 Hi there "Alwayslearning"! I've had a similar error in the past using ANSYS (or may have been NASTRAN...?)...when I gave up after banging my head against the wall for about two days, I got on to the Technical support guys... ...it turned out in my case that it was a migrogap between two edges (where there should not have been a gap). This resulted in the model be discontinuous from the analysis perspective. The model was redrawn and the problem solved. Hope this helps. Quote Link to comment Share on other sites More sharing options...
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