Design of an Anti-Impact Structure in a Certain Fuze

Abstract

The fuze installed in the missile withstands all kinds of impact loading during the throw, cutting the shell, explosive separation, etc. The design of an anti-impact structure has been drawing much attention in the fuze field. The fuze under high impact-3000g and frequency- 8000Hz is studied in this paper. Under such strong impact loading, the fuse often breaks down and loses its original function. At first, one protective structure is designed. Secondly, the finite element simulation model is established. Based on this model, the modal analysis is carried out to simulate the natural frequency value. The stresses of the fuze are analyzed under impact loading. The analysis results show that the max stress of the structure is less than the ultimate tensile strength of the material. Thirdly, impact response spectrum experiments are executed and verify that the fuze structure meets the test conditions of environmental impact.