Nonlinear analysis of laminated shells with alternating stiff/soft lay-up

摘要: This paper proposes a multi-layer formulation for the nonlinear analysis of laminated shells with an alternating stiff/soft lay-up. The zigzag variation planar displacements is taken into account by adding to Reissner–Mindlin specific set function which effective considered Furthermore, piecewise linear through-thickness distribution material transverse shear strain assumed, agrees well real distribution. proposed lamination model low-order strain–displacement relationship incorporated within co-rotational framework geometric analysis, thus upgrading local element large displacement relative ease. In addition, shell system employed direct definition additional fields and associated parameters, are excluded from transformations. application modelling approach illustrated in this 9-noded element, utilises Mixed Interpolation Tensorial Components (MITC) method overcoming locking effects. Several numerical examples structures lay-ups used illustrate effectiveness efficiency approach.