This chapter deals with the nonlinear dynamic responses of structures with
flat mid-surfaces, such as plates and boxes by employing the mixed formulation based
three-node flat triangular nonlinear shell elements presented in Chapter 7. Geometrical
nonlinearity due to large deformation, material nonlinearity due to elastic-plastic
material behaviour, and various loading situation including non-conservative loads, will
be investigated.
Keywords: Dynamics, nonlinearities, geometrical, material, flat-surface.
