shell vs plate in sap

huangyhg

shell vs plate in sap
i am studing the vibration period of a shell with sap.
when i modeled it as a group of shells, everything is ok--i got the out-of-plane vibration period.
but when modeled as plates, i got in-plane vibration--shear deformation.
can anyone tell me why? thanks
check out our whitepaper library.
in sap200 the plate element is designed to work only for shear forces and moments out of plane.
if you are trying to create a wall you will need to use shell elements.
otherwise the plate ellement must be plased horizontaly.
hope this will help.
regards.
bigzmeiimnogozul