Take The Insurance With The Mechanical Properties Of The Truncated Conical Shell-shaped Tube After The Fuse

The springs commonly are used as resistance structure in the fuze setback arming devices. It occupied much more spaces. Thus rigid resistance structure-truncated conical shell appeared, such as M759 of USA.For the fuze setback arming of a projectile, there are two main force environments, one is a projectile launched in the bore, and another is the force environment of the 1.5 m drop test of ammunition from the standard. How to make correct judgment, to ensure service management especially the 1.5 m drop test of ammunition and take advantage of the inertial force from launched environment in the bore to reliably arm the setback arming device is what this paper concerns. That is to say, on one hand the truncated conical shells are protected in the 1.5 m drop test of ammunition, on the other hand the inertial force in the bore collapses it.The destroyed process of the truncated conical shell is from buckling to collapse. In this research, the object is the truncated conical shell punched from the purple copper tape. Electronic universal testing machine was used to carry on the axial static pressure test; and standard hammering test machine and a set of special test equipment were used to carry on the axial inertial impact test; and ANSYS/LS-DYNA finite element analysis software was used to analyze the different force environment of the truncated conical shells.The different destroyed modes of the truncated conical shells have been obtained from test researches. Certain rules of the destroyed process of the truncated conical shells have also gained from data and figures. As far as fuze setback arming is concerned, truncated conical shell may be a much better choice.