| In this paper, it studied effect of the power of DEFAE on fuel spilling by numerical simulations and theoretical.Analyzed the action principle of DEFAE and its advantages and disadvantages in depth, arranged several common liquid fuel performance parameters and some clouds formed by a portion of the fuel detonating explosive energy and detonation limits, and preliminary designed DEFAE warhead.Established the relevant finite element models, respectively studied the effect of the method of fuel spilling, shell material, specific central explosive and the ratio of height to diameter on fuel spilling, received that the maximum spilling speed of fuel of using central charge ignition form is higher than using multi-point ignition form and the maximum pressure of fuel of using multi-point ignition form in the same fuel and charge quality; The smaller the yield strength of the shell material more favorable speed increase in spilling; the bigger specific central explosive of FAE, the higher fuel spilling speed in the same fuel quality; the larger the ratio of height to diameter will help improve the speed of spilling of fuel.According to the factors of fuel spilling affect and the theory of explosives, respectively fitting out of the expansion radius and height of clouds relationship with the warhead radius, height, specific central explosive, unit mass throwing explosive release energy and time; Analyzed and calculated cloud parameters the different concentration after fuel spilling; It researched the overpressure and impulse of blast field by analyzing different fuel concentration, received that the overpressure and impulse of the cloud explosion field is maximum in the zero oxygen balance condition; Summarized the main damage effect of explosion field such as shock wave, heat radiation, suffocation; damage criterions and evaluation the target destroying evidence were analyzed, and respectively calculate radius of damage in different damage effects of the damage element. |
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