Automatic Acquisition Method of Ballistic Limit of Satellite Protective Structure Based on Numerical Simulation

Abstract

The invention relates to a numerical-value-simulation-based automatic ballistic limit acquisition method for a satellite protective structure. The method comprises the following steps: a servo program creates modeling scripts according to key parameters and configurations of a simulation model to be created, calls pre-processing software to read the modeling scripts and execute modeling operations and outputs simulation model k files, an LS-dyna solver is started to calculate and output result files at fixed time intervals, simulation termination judgment is carried out by using the restart analysis function of the LS-dyna solver, simulation is ended until results are stable, data of the obtained result files are displayed graphically, limit points are directly obtained if critical penetration situations are obtained, the limit points are obtained through automatic limit diameter search if the critical penetration situations are not obtained, and a ballistic limit curve and a ballistic limit equation are finally created after the required limit points are obtained. The method has the advantages that the analysis cost is reduced, the cycle is shortened, and simulation results can be applied to engineering design through only being calibrated by a few assisted experiments.

Description

technical field [0001] The invention relates to a protective structure of a key part of a satellite, in particular to a method for automatically acquiring the ballistic limit of a satellite protective structure based on numerical simulation. Background technique [0002] In order to resist the impact of space debris on the satellite, it is necessary to design and install protective structures for the key parts of the satellite. When space debris hits the satellite protective structure, there will be two results: "penetration" and "non-penetration", and the critical point of these two states is called the ballistic limit. The ballistic limit is the most important index to evaluate the protection ability of the protective structure. [0003] Ballistic limit curves and ballistic limit equations are commonly used in engineering to describe the protection capability of a protective structure. The ballistic limit curve refers to the relationship between the fragment diameter and...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of obtaining the ballistic limit of the satellite protective structure by manual analysis, the analysis cycle is long, the analysis cost is high, and there are still human errors, and a method for automatically obtaining the ballistic limit of the satellite protective structure based on numerical simulation is proposed.

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