Hallo everbody,
i'm looking for someone, who has experience in using thick shell elements in FEA normal modes extraction. I've just compared volume to thin shell and it's a dissaster
.
Especially using quadrilateral shell elements (!) i obtain different results computing the same mesh using Lanczos solvers from different commercial packages (ideas, Ansys) I get discrepancies up to 40Hz!. I wonder if thick shell formulation would be a better substitute for volume modelling (computational time) than thin shell meshes?
thanks in advance for any suggesrtions!
greetings
Artur
i'm looking for someone, who has experience in using thick shell elements in FEA normal modes extraction. I've just compared volume to thin shell and it's a dissaster
Especially using quadrilateral shell elements (!) i obtain different results computing the same mesh using Lanczos solvers from different commercial packages (ideas, Ansys) I get discrepancies up to 40Hz!. I wonder if thick shell formulation would be a better substitute for volume modelling (computational time) than thin shell meshes?
thanks in advance for any suggesrtions!
greetings
Artur