Energy absorption hinge of evolvable warhead

The limit hinge is one of key technologies in the design of evolvable warheads, and its damage efficiency is determined by keeping its integrity in the deploying process of the warhead. In this paper, a novel hinge with energy absorption properties was designed based on dynamic principles and theoretical models of evolvable warheads, and the evolving process of the evolvable warhead with charges of varying sizes was numerically simulated, and the different performances of the ordinary hinge and the energy absorption hinge compared and examined, with a particular focus on the status of force and energy absorption undergone by the warhead when the limit angel was reached. The results show that the energy absorption hinge can reduce the impact force and improve energy absorption. The results of the experiment carried out on the evolvable warhead structure equipped with the two kinds of hinges show that the traditional hinge suffers damage in varying degrees, while our novel hinge with energy absorption keeps the structural integrity, proving that the energy absorption hinge will ensure the integrity of the warhead and the hinge when reaching the limit angel, and verifying the rationality of the energy absorption hinge design plan and the reliability of the numerical simulation.