The Research On Fuze Switch Based On The Light-induced Deformation Effect

Traditional electromechanical fuse switch general use the external environment, such as recoil force and centrifugal force after the projectile launching recoil to realize the function of the switch of the fuze circuit. It is not beneficial for realizing the nimble and intelligent of fuze system. Since the new actuator based on functional materials can convert a variety of energy forms, such as electricity, heat and light into mechanical energy, its corresponding actions can be performed after accept outside signal. Light energy is a kind of driven energy with high security, remote control, and the transient effect.Light-induced deforming polymer is an intelligent materials. It’s deformation (telescopic or bend) is caused by the specific wavelength light (uv or visible light). Compared with other drive mode such as electrical, thermal, magnetic drive mode, the light driven way has some advantages such as easy to control,low consumption, noiseless and no electromagnetic interference. Also it can control the value of driving force by applying different light source with different wavelength and intensity. In this thesis, light-induced deforming polymeris is applied in the fuze light switch. There are a variety of light response polyme. The photosensitive liquid crystal elastomer and polymer materials based on stress release is used in this thesis.By analyzing two kinds of material on ABAQUS finite element simulation platform and its corresponding response of the light switch, the factor of light response and the relationship between these factors are determined. Then according to the light response analysis of light switch based on the two materials, it is concluded that the polymer materials based on the stress release is more suitable for fuze environment. According to the actual working conditions of fuze, the paper analyzes the response of the light drive switch under non-uniform light and different illumination conditions to ensure the light switch to achieve the best effect of response. Finally, the fuze switch based on polymer materials is applied into short circuit switch of fuze electric detonator to realize the electric detonator is in short circuit condition at ordinary times and safety remove short circuit after the projectile launch.