On the perturbation and break up of a high-speed, elongating metal jet

摘要: High‐speed elongating metal jets, such as are produced by shaped charges, known to break up into a number of fragments after some stretching. Attempts explain the lengths segments have usually related Rayleigh’s work on separation jet water droplets result surface tension and extensions that work, although more recently research based ideas plastic flow has had success in showing growth instabilities approximately correct wavelength. In this paper, full equations axially symmetric used, along with von Mises condition, series solution sought first order small parameter Y/ρW2, where Y is yield strength metal, ρ its density, W fall velocity jet. The disturbances velocity, shear stresses, boundary oscillation arising from an initial disturbance axial component been found analytically. results show amplitudes ...