Coupled Map Lattice Model of Jet Breakup.

Minich, R. W. ; Schwartz, A. J. ; Baker, E. L.

Technical Information Center Oak Ridge Tennessee

关键词: Shaped charge jets;    Chemical explosives;    Copper;    Liners;    Velocity;   

RP-ID  :  DE200415006135

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

An alternative approach is described to evaluate the statistical nature of the breakup of shaped charge liners. Experimental data from ductile and brittle copper jets are analyzed in terms of velocity gradient, deviation of(Delta)V from linearity, R/S analysis, and the Hurst exponent within the coupled map lattice model. One-dimensional simulations containing 600 zones of equal mass and using distinctly different force-displacement curves are generated to simulate ductile and brittle behavior. A particle separates from the stretching jet when an element of material reaches the failure criterion. A simple model of a stretching rod using brittle, semi-brittle, and ductile force-displacement curves is in agreement with the experimental results for the Hurst exponent and the phase portraits and indicates that breakup is a correlated phenomenon.