PSI - Issue 20

Mikhail Kelner et al. / Procedia Structural Integrity 20 (2019) 119–123 Mikhail Kelner et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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3

Fig. 1. Tensile test diagram: 1 — 30HGSA steel with НТ, 2 — 65G steel with НТ, 3 — bronze, 4 — steel 3, 5 — steel 20, 6 — steel 45, 7 — 30HGSA steel, 8 — 65G steel. The destruction of shells is shown in Fig. 2.

Steel 3

Steel 20

Steel 65G with НТ

Fig. 2. The type of cavities and the remnants of the shell, formed in lead cylinders as a result of destruction by an explosion.

3. The results of the study The material with the smallest tensile strength is steel 3, with the greatest - steel 30HGSA with НТ, the material with the biggest value of the transverse tapering factor is bronze, with the smallest value - steel 65G with НТ. Experimental studies of shells for charges have shown that after a shell is detonated, hemispheric cavities form on the surface of lead cylinders, and the shape and size of the cavity formed depends on the tensile strength of the shell material. Using the ratio of the cavity diameter to its height (d/h) and the tensile strength of the shell material, the dependence was received and shown in Fig. 3.