thick and thin element in Opensees

[SadeghSalimian]

Hi every one. my question is how can a thick shell be modeled in Opensees especially for modal analysis? I mean which element is suitable to model a shell element which could consider shear displacement that is introducing in shell theory. Sap2000 enjoys thin and thick shell element . (in comparison with Euler–Bernoulli beam and Timoshenko beam)? and in the following which is proper for thin shells?