Abstract
Experimental studies and calculations of large plastic deformations and fracture of the aluminum alloy plates of different thickness by the shock waves of blasts of powerful explosives in tubes of different lengths and diameters were carried out. The deformations the plates were investigated with a single and consistent impact loading by shock waves. Parameters of shock waves and loads on the plates in the tubes were measured and method of their calculation was worked. The empirical dependences of the maximum residual deflections and increment area of the plates depending on the load pulse parameters and the plates were obtained. Dynamic strength of the aluminum alloy was defined.
Highlights
An ability to concentrate and direct the action of the blast shock wave in tubes is used in oil and gas wells, tunneling, in rocket engines, modeling of natural and technological dynamic processes an explosive type, including blasts of fuel in transport tunnels
An approximate theory of explosives blast in tubes with gas when the gas mass was smaller than the mass of explosion products m the results of measurements of shock waves parameters inside tubes with air at the blasts of powerful explosives at their open end are given in [3, 4]
The discrepancy between the calculated and measured parameters of explosion shock wave was less than 10%, when the gas mass was smaller than the mass of explosion products
Summary
An ability to concentrate and direct the action of the blast shock wave in tubes is used in oil and gas wells, tunneling, in rocket engines, modeling of natural and technological dynamic processes an explosive type, including blasts of fuel in transport tunnels. Due to increased efficiency of operation the blasts in tubes makes it possible to abandon the blast basins and chambers, to simplify the manufacturing. These applications usually used brisance action of contacting blasts [1, 2]. The discrepancy between the calculated and measured parameters of explosion shock wave was less than 10%, when the gas mass was smaller than the mass of explosion products. The study of the dynamic behavior of materials was carried in [5]
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