Thin-wall structure vibration test device and test method considering differential pressure condition

Abstract

The invention relates to a thin-wall structure vibration test device and test method considering differential pressure conditions, and belongs to the technical field of spacecraft structure product vibration tests. A thin-wall structure serves as a part of a spacecraft cabin and is a circular plate, and the thickness of the circular plate is not larger than 15 mm, preferably 15 mm. The device cansynchronously realize the comprehensive loading of the bearing pressure difference of the thin-wall structure while realizing the vibration test of the thin-wall structure. The device adopts an air bag flexible structure as an application carrier of the pressure difference condition, so that it is ensured that the device is always in a tight fit state with the thin-wall structure in the test process, and the pressure difference condition is uniformly and stably applied; meanwhile, an air bag flexible structure is adopted, so that the device has certain universality and is suitable for vibration tests of various spacecraft thin-wall structures with pressure difference and vibration combined working conditions; the test method is simple, reliable and high in universality.

Description

technical field [0001] The invention relates to a thin-walled structure vibration test device and a test method that take into account pressure difference conditions, and belongs to the technical field of vibration tests of spacecraft structure products. The thin-walled structure is used as a part of the spacecraft cabin, and the thin-walled structure is a circular plate, the thickness of which is not greater than 15mm, preferably 15mm. Background technique [0002] In recent years, with the continuous development of aerospace technology, the parachute recovery landing system has been widely used in various types of aircraft such as manned space vehicle return capsule, reusable return satellite return capsule, deep space probe, strategic and tactical weapon data cabin, etc. widely used. A key component used in conjunction with the parachute recovery landing system is a thin-walled structure. Its function is to keep the shape of the aircraft intact during the flight and to a...

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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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