Learning Forum

[bokaJ]

Dear ladies and gentleman.

I am interested in the deflection of following plate:

[peteroznewman]

nAt the end of the solve.out file is the following n*** FATAL *** CP = 151.312 TIME= 19:03:21n The internal constraint equation 224199 share degrees of freedom with n the constraint equations along the edge of the cyclic symmetry sector. n This is not allowed. Please modify your contact pair to avoid this. nDo what it says and you will get rid of this error.nTry to use simple symmetry instead of cyclic symmetry.n

[bokaJ]

Thank you for your quick answer sir.So there is no chance to use the cyclic symmetry in combination with a frictional contact? Because there is no chance that they do not shear an edge?nSo the only chance is to use an frictionless support instead of the cyclic symmetry? nSo is there any chance to show the result of my calculation expanted to a whole cycle?Thank you for your answers. nBest regardsnBokajn

[peteroznewman]

nYes, there is a chance to keep the cyclic symmetry. You just can't have any node in that set also be in another constraint equation.nHere is one problem; you have this red face for some connection that includes a two edges of the cyclic symmetry set. If instead of a whole face, you imprint a washer-sized circular edge on that face around each hole and select the washer face instead of the whole face, that would prevent a constraint equation from sharing nodes with the cyclic symmetry set.nn

[bokaJ]

Thank you very much!nThis has solved my problem.n