NUCLEATION OF SPALL IN THE ALUMINIUM WEDGE SAMPLE UNDER THE SLIDING DETONATION LOADING: EXPERIMENTAL STUDY AND NUMERICAL SIMULATION
O. B. Drennov, A. G. Ioilev, S. S. Sokolov, V. N. Sofronov, A. L. Stadnik, T. I. Chaika, Yu. V. Yanilkin
VANT. Ser.: Mat. Mod. Fiz. Proc 2016. Вып.1. С. 28-36.
Experiments on loading V-shape aluminum samples by sliding detonation in a thin layer of high explosive (HE) were performed. Each experiment implements the conditions of spall initiation and development in the two-dimensional stress-strained state of material. The obtained experimental data were used to validate the kinetic models of the material damage initiation and development and the damaged material behavior which had been implemented in the TIM and EGAK codes. The validation test results are in a good agreement with experimental data on the length of spall fracture and thickness of spall layer. Keywords: detonation, shock wave, spall, fissure, stress, strain, plasticity, hardening, softening, viscosity, damage, fracture, validation, the TIM code, the EGAK code.
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English
