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An Additional Matrix "Constraint Jacobian" In Shell Module
Posted 2025年4月24日 GMT+8 01:40Studies & Solvers, Structural Mechanics, Physics InterfacesVersion 5.51 Reply
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Hi,
Recently, when I checked the process of "Elimination Constraint Handing" in Shell Module, I found something confused.
As a toy model, I just built a plate in the Shell Module and no boundary conditions are applied. However, in the matrix "Constraint Jacobian", an additional constraint was used, i.e.
. What's the meaning for this constraint?
In my knowledge, it implies the displacement component u_3 should be equal to 0 for all nodes. Actually, the surface plot in "Results" tells me this is misunderstanding.
Any guidance would be very appreciated. Thanks!
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Sorry , I think I find it, the constraint means
instead. That implies the displacement of shell normal
should be 0 as Reissner-Mindlin assumption required. Thanks.
