Flat Ribbon Wound Explosion Container Of Dynamic Characteristics Of Factors Studies

Flat ribbon wound layered explosion vessel is a new kind of explosive vessel, its main structure is a thin inner tube and staggered winding steel strips at an angle. Because of this discrete structure form, flat ribbon wound layered explosion vessel possesses incomparable advantages compared with monolithic cylindrical explosion vessel in material processing, production costs, production efficiency, etc. There are gaps in the steel layers of it, these gaps are the natural pressure released holes, the friction and gap change of the steel layers can produce good results in the energy absorption under explosive loading. Monolithic cylindrical explosion vessel does not have such effect.In this paper, based on the explosive loading experiments of flat ribbon wound layered explosion vessel, the higher precision finite element models of it have been established. The dynamic characteristics of it have been analyzed in different explosive shapes. Effect of strain rate effect, friction, axial dimension, and thickness ratio of steel layer and inner tube on the explosion-resistance behavior of it is discussed. The results show that the deformation of the ribbon explosion vessel in the explosion center under the explosion loading is mainly plastic deformation and the axial deformation is not obvious. The explosion center torus and head center are exposed to the stronger impact, there is stress concentration in sealing head and shell join. Shapes of explosive have significant effect on the dynamic characteristics. The sensible effect of strain-rate in the winding material under stronger shock loading is produced, with the strengthening of the impact, this effect is growing. Improvement effect of friction on the explosion-resistance behavior is very significant. With the axial length appropriate changing, effect on the explosion-resistance behavior is less. By choosing materials and adjusting thickness ratio of steel layer and inner tube, ribbon explosive vessel possesses incomparable advantages compared with monolithic cylindrical explosion vessel in the explosion-resistance behavior.