Abstract

The main factors determining the peak shock acceleration reproduced on shock machines are the velocity of collision of the table on which the test device is fixed with the programmer and the properties of the programmer itself. The collision velocity is determined mainly by the height of the freefall drop of the table and is limited by the overall dimensions of the machine. The duration of the pulse depends on the rigidity of the programmer. However, with constant rigidity, it is possible to increase the pulse duration only by increasing the collision velocity of the table and the programmer. One of the well-known ways to increase the velocity of collision is additional acceleration of the table, in particular, with the help of a pneumatic accelerator. The article considers various options for the implementation of a pneumatic accelerator in relation to multiple shock machines. A study of the effectiveness of their use with the help of analytical and computer models has been conducted. The obtained theoretical estimates are confirmed by the results of experimental studies.

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