Spacecraft explosion shock response spectrum vertical excitation simulation system

Abstract

The invention discloses a spacecraft explosion shock response spectrum vertical excitation simulation system. The system comprises a base, the top of the base is provided with a support assembly, the support assembly is provided with a resonance table top, the center of the bottom of the resonance table top is provided with a waveform generator, and the left side and the right side of the resonance table top are provided with constraint assemblies. And an impact assembly is arranged in the base, the impact assembly is arranged under the waveform generator, and a driving assembly used for driving the restraining assembly to move left and right is arranged on the base. The table top constraint assembly is arranged at the bottom of the resonance table top, the driving part and the guide wheel are arranged, and the table top constraint assembly can move left and right along the resonance table top and clamp and constrain the table top, so that the effective area of the resonance table top can be adjusted, the limited impact area of the resonance table top can be flexibly adjusted for test products with different sizes, and the test flexibility of the simulation system is improved.

Description

technical field [0001] The invention relates to the technical field of spacecraft dynamic tests, in particular to a vertical excitation simulation system of a spacecraft explosion shock response spectrum. Background technique [0002] During the full mission of the spacecraft, it needs to experience various types of mechanical environments, including vibration, noise, shock, acceleration, etc. Among them, the impact environment is mainly generated by various pyrotechnic devices on the spacecraft during the working process. The explosion impact environment is one of the most intense dynamic environments experienced by the spacecraft. It should be completed by means of explosive shock environment simulation test to improve the reliability of the product. [0003] After the release of GJB1027A, the shock response spectrum test is used to simulate the explosion impact, and the shock response spectrum test requires higher equipment capabilities. At present, it is mainly realize...

AI Technical Summary

Problems solved by technology

At present, it is mainly realized in two ways. One is to calculate the corresponding time domain control curve by the vibration controller to control the vibration table to complete the shock test. The vibration table simulation cost is low and the controllability is high, but only low amplitude shock response can be performed. Spectrum simulation, mainly used for low-level (usually below 500g) and narrow frequency range (below 4kHz) shock environment simulation; the other is mechanical shock simulation, usually using a pendulum impact tester or a pneumatic horizontal shock table , when the vertical impact test of the product needs to be installed on the transfer tooling, the impact response spectrum is difficult to control, and the installation process is time-consuming and laborious

[0004] At present, the impact test level of spacecraft products is generally required to exceed 1000g, and the impact test level of some products has reached 2000g, and even the impact test level of some models exceeds 3000g. 200kg, the current technical conditions of the test cannot meet the needs of the test

In order to adapt to the growing needs of spacecraft, avoid insufficient assessment of spacecraft products during the test process, and fail to fully expose product design and manufacturing defects, it is necessary to develop a set of vertical excitation simulation systems that can conduct explosion shock response spectra of spacecraft subsystems.

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