Loading device for laser-irradiated cylindrical shell test and experimental method

Abstract

The invention relates to a loading device for a laser-irradiated cylindrical shell test and an experimental method. A spring is arranged below a spring cover plate of the loading device for the laser-irradiated cylindrical shell test, and the spring cover plate can move up and down along spring cover plate fixing rods under the action of upward pressure or elasticity of the spring to keep loading a test piece in the whole laser irradiation process and complete a collapse and damage process of a cylindrical shell under the action of laser irradiation and a mechanical load. According to the device and the method, a pressure head is kept vertically pressed downwards in a loading process, and acts on the same point without movement all the time, so that axial pressure application non-uniformity caused by the inclination of the pressure head is effectively avoided; the central axis of the test piece is overlapped with the action line of loaded force without deviation to ensure uniform pressure, as a result, test result bias caused by eccentric pressure on the test piece is avoided, and the accuracy of a test result is improved.

Description

technical field [0001] The invention relates to a sample loading device and an experimental method, belonging to the technical field of macroscopic mechanical performance testing. technical background [0002] The laser irradiation failure test of the cylindrical shell structure is a test to determine the failure time of the material structure under the combined action of mechanical load and laser irradiation. It is also an important aspect of mechanical performance testing and has reference value for the anti-laser design of the structure. It has important engineering application value for the research of laser protective materials and the design of protective structures. At present, the commonly used mechanical testing machine can realize the function of loading, but it cannot maintain the load for the preloaded laser irradiation test, and the existing fixtures and equipment are prone to eccentric compression and axial compression of the specimen when performing cylindrica...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of maintaining the load of the preloaded sample in the laser irradiation test and the problems of eccentric compression and uneven application of axial pressure when compressing the cylindrical shell sample, so as to make the test result more accurate and reduce the test deviation, the present invention Proposed laser irradiation cylindrical shell test loading device and related test methods

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