Study On Resistance To Launch Overload Of Thermobaric Explosive

Based on the theoretical, numerical and experimental methods, the resistance to launch overload of Thermobaric Explosive (TBE) was discussed in this thesis, including the basic formula, loading density and loading rate.On the basis of compatible components, the 12 recipes were designed to test the forming properties, mechanical sensitivity and strength properties from the different binders and the radio of binders and plasticizers. The results showed that the TBE, made of the Viton as a binder and the radio of binders and plasticizer chose to 0.6, has the low mechanical sensitivity and the high strength. After adding plasticizers into the formula, it’s good to promote its formability and to reduce sensitivity.In order to investigate the dynamic mechanics performance, experiments and numerical simulations were performed. The results indicated that the TBE, made of the Viton as a binder and the radio of binders and plasticizer as 0.6-1, is the best for failure stress and elastic modulus. It can’t shorten the time to the failure value by the different the radio of binders and plasticizer. Analyzing the stress strain curve, the dynamic mechanical property is good when the density ratios are 95%- 96%. The thermobaric explosives have obvious strain rate effect by changing the length to diameter ratio and the bullet rate. That is confirmed by numerical methods using the soft of LS-DYNA.The formulation of TBE which based on a baseline test was conformed by the launch experiment, the results showed that it has the high resistance to launch overload and it can keep stable and reliable in the launch.