SU1415107A1 - Arrangement for testing axially symmetric shell for dynamic compression - Google Patents

Abstract

This invention relates to a testing technique. The aim of the invention is to improve the accuracy of the test. The device comprises a base 1 for mounting the test shell 2, a drummer 3 mounted on a free end of the shell, in the form of a disk, struck with the central part of the drummer 4 and demolishing the head 5 placed between the drummer and the free end of the shell. Upon impact, the spacer is destroyed, which significantly reduces the impact on the shell of the radial shock load. The shell is practically loaded only with a compressive shock load, which increases the accuracy of the tests. 3 il.

Description

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The invention relates to a test and enbHoft technique, namely, devices for testing axisymmetric shells for dynamic compression.

The purpose of the invention is to increase the point by reducing the effect of ijiia on the test shell of the radial shock load.

Figure 1 shows the proposed device, a General view; in Fig. 2, this | ke, at the moment of impact of the striker with the impact; in FIG. 3 - the same, after walking {striking the striker of the striker. : The device contains a base 1 | for installing the test shell 2, a drummer 3 in the form of a disk, placing JMoro on the free end of the shell 2, 1 impacted with the central part of the shock 2 head 4, located between the first drummer 3 and the free end of the obo; pads 2 destructible spacer 5 and restrictive cylinder 6.

The device works as follows.

The impulse loading of the central part of the drummer 3 is created by the pre-accelerated striker 4. When the striker 4 collides with the drummer 3, the striker 5 is destroyed. The pulse duration is determined by the time of the destruction of the spacer 5 when the striker 3 moves from the initial position (Fig. 1) to the position in which the paddle 3. rests on the limiting cylinder 6 (FIG. 3). Reducing the duration of the shock pulse can significantly reduce the bending of the free end of the shell 2, as well as offset from the noise associated with the imposition of the direct and reflected pulses. The presence of destructible spacers 5 leads only to the creation of an axial compressive load and significantly reduces the effect of radial shock load on the shell 2.

Spacer 5 can be made of a brittle material (glass, ceramics, etc.) or in the form of an element with a liquid filler, in which the upper and lower bases are rigid and the side walls are made of elastic material (for example, rubber). The height of the limiting cylinder 6 is chosen equal to or greater than the height of the test shell 2,

Claims (1)

Invention Formula A device for testing an axially symmetric shell for dynamic compression, containing a base for mounting the test shell, a drummer in the form of a disk, mounted on the free end of the shell, collides with the central part of the impactor, in order to improve the accuracy by reducing the effect of the radial shock load on the test shell; it is provided with a hammer placed by the mezvdu and a free end of the shell of the spacer being destroyed. faz.Z (rig. 3