Numerical-value-simulation-based automatic ballistic limit acquisition method for satellite protective structure

A protective structure and ballistic limit technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as human error, high analysis cost, and long analysis cycle, and achieve the goal of shortening the acquisition cycle and reducing costs Effect

Active Publication Date: 2013-07-24
BEIHANG UNIV
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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 ana

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  • Numerical-value-simulation-based automatic ballistic limit acquisition method for satellite protective structure
  • Numerical-value-simulation-based automatic ballistic limit acquisition method for satellite protective structure
  • Numerical-value-simulation-based automatic ballistic limit acquisition method for satellite protective structure

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] The present invention is a method for automatically acquiring the ballistic limit of a satellite protective structure based on numerical simulation. First, a user establishes a working directory and a protective structure model k file, copies the impact simulation header file and the protective structure model k file into the working directory, and then fills in the Ballistic Limit automatically obtains the configuration file, starting by e.g. figure 1 The steps shown are for automatic acquisition of ballistic limits. In the automatic ballistic limit acquisition configuration file, the parameters related to the limit point search are given, including: the working directory, the file name of the relevant k file, the two initial values ​​x1 and x2 for the automatic limit diameter search, and the convergence error a; in addition, due to th...

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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 protection structure for key parts of a satellite, in particular to a method for automatically acquiring the ballistic limit of a satellite protection structure based on numerical simulation. Background technique [0002] In order to resist the impact of space debris on satellites, it is necessary to design and install protective structures for key parts of satellites. The impact of space debris on the satellite protective structure will produce two results of "penetration" and "non-penetration", and the critical point of these two states is called the ballistic limit. The ballistic limit is the most important indicator to evaluate the protective ability of protective structures. [0003] In engineering, the ballistic limit curve and ballistic limit equation are often used to describe the protective ability of a protective structure. The ballistic limit curve refers to the relationship between the fragment diameter and the ...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张晓天贾光辉
Owner BEIHANG UNIV
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