This validation is essential to the overall success and impact of this work since it establishes a suitable degree of confidence in the capability of the developed numerical models to represent the physical behavior of the analyzed structural components. Attaining a realistic representation would enable the use of the proposed numerical descriptions for parametric studies to support the development of a design methodology for RHCSP.A successful validation against experimental results was achieved. The top, bottom and core plates of the sandwich panels were discredited using a fine mesh of geometrically and materially nonlinear 9-noded shell elements, capable of accurately predicting the effects of large displacements and structural instabilities at a global and local level. A suitable representation of the experimental data was achieved due to the modeling of slotted cores by disconnecting