RU176801U1 - Rail stand for dynamic track testing of materials and structures for impact - Google Patents

Abstract

The utility model relates to test equipment and is intended for ground dynamic track testing of fragments of structures and materials of aviation and rocket and space technology. The rail stand contains a rocket carriage with rocket engines mounted on it, brackets made with the possibility of fixing structural elements on the carriage at different angles in the transverse direction relative to its movement, objects acting on the test structural elements installed using destructible rods on beams placed along rail guides at given points lying on the motion paths of the corresponding structural elements. A loading device is fixed on each bracket, having a mechanical connection with the corresponding structural element and creating a stress-strain state in it. Effect: increasing the reliability of test results. 2 ill.

Description

The utility model relates to test equipment and is intended for ground dynamic track testing of fragments of structures and materials of aviation and rocket and space technology.

A well-known bench for testing materials and protective devices when exposed to high-energy fragments of gas turbine engines, containing a rocket carriage with rocket engines mounted on it and a test sample of material or protective device. RF patent for utility model No. 63064, IPC G01M 7/08, 05/10/2007. The disadvantage of this stand is the impossibility of combining several samples in one test run, including those that are different in mass and size parameters, functional purpose and impact conditions.

Also known is a rail stand for dynamic track testing of materials and structures for impact, containing a rocket carriage, accelerated by rocket engines along rail guides, on which several test samples of the material or structure are simultaneously placed in the transverse direction relative to its movement. Test samples can be mounted on the rocket carriage using brackets at different angles. The objects acting on the test specimens during the impact are installed using destructible rods on the brackets placed along the rail guides at predetermined points lying on the motion paths of the corresponding test specimens. At the same time, in one launch, it is possible to simulate different conditions of impacts in orientation, speed, impact zone and other parameters of the test sample and the object acting on it. RF patent for utility model No. 111654, IPC G01M 7/08, 12/20/2011. This decision was made as a prototype.

The disadvantage of the prototype is the relatively low reliability of the test results, because, unlike the tested samples, the real structural elements in the process of their functioning are in a stress-strain state under the action of trajectory loads. In addition, shell structures may be loaded with internal pressure. The result of the impact, ceteris paribus, will depend on the stress-strain state of the structural elements.

The technical result of the proposed utility model is to increase the reliability of test results.

The technical result is achieved in that in a rail bench for dynamic track testing of structural elements for impact, including a rocket carriage with rocket engines mounted on it, brackets made with the possibility of fixing structural elements on the carriage at different angles in the direction transverse to its movement, objects acting on the test structural elements installed using destructible rods on beams placed along rail guides in predetermined points lying on the trajectories of the movement of the corresponding structural elements, a load device is fixed on each bracket, having a mechanical connection with the corresponding structural element and creating a stress-strain state in it.

The essence of the utility model is illustrated by drawings.

In FIG. 1 shows a side view of the stand. In FIG. 2 is a plan view. The rail stand contains a rocket carriage 1 with rocket engines 2, tested structural members 3 placed on the carriage with brackets 4, loading devices 5 placed on the brackets 4 and having mechanical connection with the corresponding structural member 3. The loading devices 5 are created in the tested structural members stress-strain states arising in them under the action of real trajectory loads. The stand also contains objects 6, acting on the test structural elements 3, installed using destructible rods 7 on the beams 8 at predetermined points along the rail guides 9.

The stand works as follows. Before starting, the test structural elements 3 are placed on the rocket carriage 1 at the required angles in the transverse direction relative to its movement using brackets 4. Using loading devices 5 in the test structural elements 3 create a stress-strain state simulating real trajectory loads. For example, as loading devices 5, jacks can be used to create tensile, compressive, or bending stresses in test samples 3. Objects 6, acting in the process of impact on the test structural elements 3, are installed with a given orientation using destructible rods 7 on the beams 8 placed along the rail guides 9 at predetermined points located on the motion paths of the corresponding test structural elements 3. Rocket carriage 1 with the test by structural elements 3 it is accelerated by rocket engines 2 along rail guides 9. When the carriage 1 reaches the installation points of the acting objects 6 at a given speed, they collide Phenomenon with the corresponding structural element 3.

Thus, the above differences of the claimed utility model from the prototype can improve the reliability of the test results.

Claims (1)

Rail stand for dynamic track testing of structural elements for impact, including a rocket carriage with rocket engines mounted on it, brackets made with the possibility of fixing structural elements on the carriage at different angles in the transverse direction relative to its movement, objects acting on the tested structural elements, installed using destructible rods on beams placed along rail guides at predetermined points lying on the motion paths respectively of existing structural elements, characterized in that a loading device is fixed on each bracket, having a mechanical connection with the corresponding structural element and creating a stress-strain state in it.

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