Loads acting on a rigid wall upon impact of a high porous cylinder

Load on the structure from the side of the onboard equipment at the moment of the aircraft impact on it is investigated. The estimation of the correctness and applicability of the model of the aircraft, presented in the form of a rigid-plastic rod (Riera's approach), is carried out when studying the effect of onboard equipment. To simulate this impact, we used volumetric perforated aluminum alloy samples. Calculations were carried out using the proposed model in a one-dimensional approximation, as well as direct three-dimensional modeling of the impact by the finite element method using the LS-DYNA package. Both of these approaches make it possible to study the process of loading a rigid wall. The quantitative and qualitative differences between these approaches and Riera's approach are shown.