Dynamics analysis and experimental validation of the aluminum honeycomb buffer in the tether-net launcher

Abstract

Aluminum honeycomb is newly introduced in the tether-net launcher device to attenuate the large recoil force and impact generated on the platform. The stress–strain of aluminum honeycomb is first obtained through the quasi-static compression experiment to study the mechanical properties. The compression simulation model is then established using the crushable foam plasticity model. By comparing the simulation and experiment results, the error of plateau stage force is 0.33%, which validates the accuracy of the simulation model. After that, the internal ballistic responses of the launcher are gained by the equivalent classical interior ballistic equations. The dynamic launch model is built through the integration of the above models. It is verified by the dynamic launch experiment, with the average recoil error being 5.9%. Finally, the recoil performance of the launcher with or without aluminum honeycomb buffer is studied. The results show that aluminum honeycomb can reduce the average launch recoil force by 17.23%, with little effect on launch velocity, demonstrating good energy absorption ability.