The Finite Element Analysis Of The Collision Fuze Plate With G High-value Long-pulse And Design Of Optimization

With the development of computer technology and information technology, modern defense industry has also a higher demand on the modern fuse. For a long time, the manufacturing methods of the fuse still depend on the traditional methods, which are time-consuming and costly. In the design phase of the fuse, by using virtual simulation technology the functions of the fuse can be tested and evaluated on the computer, which are also be improved and enhanced. As a result, the FEA virtual technology has been more widely used in the modern fuse manufacturing.In this paper, the dynamic characteristics of a high-value g long pulse fuse experimental set-up have been investigated by using the theoretical analysis and virtual simulation technology, which are simulated on the computer firstly,the simulated results can provide reasonable parameters for the design of a high-value g long pulse fuse experimental set-up.By using the Pro / E software, the mathematical model of a high-value g long pulse fuse experimental set-up is established, according to the working principle of the fuse experimental set-up, the displacement boundary conditions and the load of the fuse experimental set-up can be determined, with the use of the bilinear and Plastic Kinematic material constitutive models and the application of ANSYS / LS-DYNA software, high-speed collision simulation is achieved well and the fuse acceleration and the contact time of collision changed with time are analysis. The results show that the strain rate has great influence on the characteristics of high-speed collision, the Plastic Kinematic constitutive model can simulate well high-speed collision course, and the simulated results provide a reliable theoretical basis for a high-value g long pulse fuse experimental set-up design.In addition, through the statics and dynamics of transient finite element analysis, it proves that the stress distribution of the impact plate is basically the same in the static and dynamic conditions, the structural strength value of the fuse impact plate is more than the allowable value of the material, so it's necessary to optimize the structural dimensions of the fuse impact plate. Finally, in order to optimize the structural dimensions of the fuse impact plate with ANSYS software, meet the static and dynamic characteristics indicators and reduce the quality of the fuse impact plate, it needs to establish parametric model of the fuse impact plate and the design space, put the lightweight of the fuse impact plate and the stiffness and displacement as the objective function and the constraints conditions. It needs to round off the optimized structural dimensions and have another finite element analysis for the fuse impact plate, under meeting its static and dynamic characteristics, to get the ideal structural dimensions. The conclusions provide a theoretical basis for the high-value g long pulse fuse experimental set-up design, and at the same time have successful experiences for other types of fuses design.