Lander-soil interaction impact model test device

Abstract

The invention discloses a testing device for an interactive impact model of a lander and a soil body, which comprises a crossbeam, a cotton thread, a side column, an upper crossbeam supporter, an impact barrel, a lower crossbeam supporter, a glide guide rail, a computer, a signal processor, a soil box, a movable sliding rail and a displacement meter, wherein the crossbeam and the movable sliding rail are respectively fixed at the top and the bottom of the side column; a center below the crossbeam is fixedly connected with the displacement meter; the upper crossbeam supporter and the lower crossbeam supporter are riveted on the side column; the glide guide rail is fixed through the upper crossbeam supporter and the lower crossbeam supporter; the impact barrel is mounted on the glide guide rail and is tensioned and stabilized through the cotton thread; and the soil box is arranged below the impact barrel. By using the testing device, through controlling a height and the mass of a weight, the soil body is impacted with a predetermined impact speed and an impact mass; the testing parameters needed by an impact are conveniently measured in real time; and the interactive power characteristics in an impact process are reflected.

Description

technical field [0001] The invention relates to a model test device for testing the mechanical parameters of the impact process due to the vertical impact of the impact object on the soil, and for reflecting the dynamic characteristics of the interaction between the soil and the impact object. Background technique [0002] At present, with the gradual deepening of human research on space exploration technology beyond the earth, the requirements for lander design are getting higher and higher, and a safe and multi-functional lander is essential. Due to the huge impact of the soil during the lander's landing impact on the soil, in order to ensure that the internal precision instruments are not damaged, the landing area is reasonably selected so that the lander can achieve a soft landing. The measurement of the mechanical properties of the lander's impact on the soil is The focus of model test research. There are many research topics on the interaction between soil and structu...

AI Technical Summary

Problems solved by technology

There are many research topics on the interaction between soil and structure at home and abroad, especially the shear effect. However, there are very few impact test devices that study the vertical impact effect and measure the interaction between the lander and the soil.

Dynamic compaction is the only industrial process similar to impact landing, but the former focuses more on how to strengthen the foundation of the building, and rarely considers the impact of the lander due to the impact of the soil under various working conditions. The real-time mechanical effects of real-time, such as momentum (including impact velocity and mass), impact energy, compactness of soil surface and penetration depth and other factors

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