| Abstract: | The results of physicomathematical modeling obtained within the framework of continuum mechanics by numerical solution of
the two-dimensional axisymmetric nonstationary problem of the dynamic deformation of a compressed elastoplastic bar of variable
section are presented. Dependences of the quantitative characteristics of stretching and breakup of a shaped-charge jet (the
coefficients of ultimate and inertial elongation and the number of individual elements formed in breakup) on the jet parameters
and the jet material properties are revealed by calculations. The calculated dependences are compared with experimental data
for plastically failing jets of copper and niobium, and the character of the dependences is explained from the physical viewpoint.
Bauman Moscow State Technical University, Moscow 107005. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol.
40, No. 4, pp. 25–35, July–August, 1999. |
