Resumen de Investigation on nonlinear bending behavior of sandwich shell panel with cutout using HSDT and FE approach

Ravi Kumar, Chetan Kumar Hirwani

• The nonlinear deflection response of the sandwich shell panel with cutout is analyzed, numerically in the present article. The numerical model of the said curved panel is derived using higher-order shear deformation theory and finite element approximations. The geometrical nonlinearity is being considered via Green-Lagrange’s strain-displacement relation. The governing equation of the nonlinear bending analysis is derived using the energy approach and variational principle. Model accuracy is analyzed as a first step by matching current model responses with previously available data. Further, the model’s capability is explored by solving various new numerical examples and discussed in detail.