Rapid pressure relief and thermo-acoustic vibration comprehensive stress simulation test device

Abstract

The invention discloses a rapid pressure relief and thermo-acoustic vibration comprehensive stress simulation test device which comprises a rapid pressure relief simulation part and a thermo-acousticvibration simulation part. The rapid pressure relief simulation part mainly comprises a controlled pressure relief box, a rapid pressure relief pipeline and a pressure control pipeline; and the thermo-acoustic vibration simulation part comprises a vibration table base body, a vibration table top, a box body, an acceleration sensor, an infrared lamp array, a high-power loudspeaker, a gathering walland a plug. According to the rapid pressure relief and thermo-acoustic vibration comprehensive stress simulation test device, pressure stress, thermal stress, noise stress and vibration stress can besimulated at the same time, the design of the gathering wall and the plug are designed, so that a local high-strength sound field can be formed near a test piece; and a two-pipeline controlled pressure relief mode is adopted, so that the pressure intensity in the controlled pressure relief box is ensured to be accurately controlled in time.

Description

technical field [0001] The invention belongs to the cross-technical fields of environmental testing and aerospace. Specifically, the invention mainly relates to a comprehensive stress testing device capable of simultaneously simulating four stresses of pressure, heat, sound and vibration. Background technique [0002] Here, the background technology is introduced by taking the typical application object of the patented technology, the multi-layer thermal insulation assembly of a spacecraft, as an example. The multi-layer heat insulation component has the characteristics of light weight and strong radiation heat insulation performance, which can significantly reduce the radiation heat exchange between spacecraft products and the surrounding environment, and is one of the most commonly used passive thermal control products for spacecraft [0003] When the spacecraft is launched, the pressure in the outer fairing of the spacecraft in the active stage of the rocket drops rapidly...

AI Technical Summary

Problems solved by technology

[0006] At present, there is a lack of test devices that can directly simulate rapid pressure relief and thermal, acoustic, and vibrational stresses, and the ground verification of multilayer insulation components to withstand rapid pressure relief and thermal, acoustic, and vibrational stresses is not sufficient.

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