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Shell Delamination/Separation under Stress

Question asked by 1-AHTUV0 on Mar 23, 2010
Latest reply on Mar 24, 2010 by 1-LB43TI

I admittedly work in the world of solid elements 95% of the time, but I can't find a solution to this issue and would appreciate any input. I basically have a large box frame weldment consisting of c-channels and I-beams in an assembly (as surface parts). The frame is subject to large temperature gradients, and I am interested in the developed stresses, particularly at the joints. The thermal model runs fine and produces a reasonable temperature distribution. When I port that temp data into a shell-mesh static analysis, I am getting separation of I-beam flanges (within I-beam shell parts) at several points.

 

Attached is a single beam component subject to a representative temperature gradient and constraints. It, too, is separating along the web/flange interface. The problem happens with both thick and thin shell formulations. Also, at very high mesh density, my assembly produces NO stresses. Any thoughts?

 

Thanks for the help.

 

Brian

 

Solidworks Simulation Premium 2010 SP2.1

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