The impact of periodic disturbances on the formation of high-speed rod elements

A computer simulation of 3D dynamic explosive loading of meniscus linings is performed to investigate the effect of periodic wave-like profile ripples of cladding on the formation of folds in high-speed rod elements as a result of their loading. An approach to accounting for small distortions of the geometry in problems with high strain rates is proposed. Accounting for the destruction made it possible to determine the range of amplitudes of initial irregularities for the entire element formation and to find the areas of the maximum likelihood damage of an element. The most reasonable types of meridional profiles of meniscus linings are established. The methods for the formation of small-amplitude ripples on claddings are suggested.

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