Dispersion Characteristics of Spherical Fragments Driven by Cylindrical Charge
To investigate the dispersion characteristics of spherical tungsten fragments driven by a cylindrical charge,dispersion tests were conducted on a warhead with spherical prefabricated fragments.Considering the limitation of traditional comb targets,which can only measure the maximum velocity instead of the velocity distribution of the fragment group,a novel crossed-comb target was designed and fabricated.This velocity measurement device successfully recorded the pulse signals generated by multiple fragments penetrating the target and the impact positions.Numerical simulations were conducted using LS-DYNA to calculate the dispersion characteristics of spherical fragments driven by cylindrical charges.The results indicate that the numerical simulation results agree well with the test data.The designed crossed-comb shaped target can accurately measure the scattering velocities of multiple fragments.Increasing the length-to-diameter ratio can mitigate the effect of rarefaction waves at both ends of the charge on the fragment velocities;however,this mitigating effect diminishes as the length-to-diameter ratio continues to increase.
cross-comb targetvelocity measurement deviceprefabricated fragmentsdispersion velocitylength-to-diameter ratio
万方数据
维普
