A thin-walled structure vibration test device and test method taking into account differential pressure conditions

Abstract

The invention relates to a thin-walled structure vibration test device and a test method taking into account pressure difference conditions, and belongs to the technical field of spacecraft structural product vibration test. The thin-walled structure is a part of the spacecraft cabin, and the thin-walled structure is a circular plate, and the thickness of the circular plate is not more than 15mm, preferably 15mm. The device can realize the vibration test of the thin-walled structure and simultaneously realize the comprehensive loading of the thin-walled structure under pressure difference. It is always in a tight fit state, and the pressure differential conditions are applied evenly and stably; at the same time, the flexible structure of the airbag makes the device have a certain universal type, which is suitable for various spacecraft thin-walled structures with combined pressure differential and vibration conditions vibration test; the test method is simple, reliable and versatile.

Description

technical field [0001] The invention relates to a thin-walled structure vibration test device and a test method taking into account pressure difference conditions, and belongs to the technical field of spacecraft structural product vibration test. The thin-walled structure is a part of the spacecraft cabin, and the thin-walled structure is a circular plate, and the thickness of the circular plate is not more than 15mm, preferably 15mm. Background technique [0002] In recent years, with the continuous development of aerospace technology, parachute recovery and landing systems have been used in various aircraft such as manned space vehicle return capsules, reusable returnable satellite return capsules, deep space probes, and strategic and tactical weapon data modules. widely used. A key component used in conjunction with the parachute recovery and landing system is a thin-walled structure. Its function is to keep the shape of the aircraft intact during flight, and to avoid t...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the current thin-walled structure vibration test cannot realize the test verification of the pressure difference + vibration comprehensive working condition, the present invention will combine the advantages of the above-mentioned airbag structure to invent a thin-walled structure vibration test device and test method that take into account the pressure difference condition, It can realize the comprehensive loading of pressure difference and vibration conditions on the thin-walled structure, and provide a new and efficient test method for the comprehensive vibration test of the thin-walled structure of the spacecraft.

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