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Parameterization simulation method of returner soft landing dynamics

A parametric simulation and land dynamics technology, applied in the field of deep space exploration, can solve problems such as low design accuracy and low design efficiency of beam structures, and achieve the effect of solving design efficiency problems, optimizing design, and avoiding duplication of work.

Active Publication Date: 2016-04-06
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0006] In order to solve the problems of low design efficiency and low design accuracy of the beam structure in the dynamic analysis of the soft landing process of the return vehicle in the prior art, a parametric simulation method for the soft landing dynamics of the return vehicle is provided

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  • Parameterization simulation method of returner soft landing dynamics

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Embodiment Construction

[0029] The content of the present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0030] Step 1: Simplify the returner model.

[0031] The returner carries a variety of payloads, and the model is very complex, involving a variety of geometric dimensions. Therefore, before performing parametric simulation, the present invention first simplifies the physical model of the returner: the fundamental purpose of the soft landing dynamic response analysis of the returner is to obtain the mechanical environment of the payload on the returner, so as to formulate the vibration test of the landing stage condition. The mechanical environment of the payload is generally measured by the shock response spectrum, so the physical quantity that needs to be obtained is the acceleration response at the payload girder (ie, its installation position on the girder). Considering the mass of the payload (instruments on the large beam of t...

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Abstract

The invention relates to a parameterization simulation method of returner soft landing dynamics belonging to the technical field of the deep space exploration. The parameterization simulation method of returner soft landing dynamics is provided for solving the problem in the prior art that the design efficiency and the design precision of the beam structure in analysis of the returner soft landing dynamics are low. The method can generate finite element grid models of every component, automatically finishes beam structure assembly, returner model assembly, solution working condition setting, solution calculation and result extraction, can precisely reflect plastic deformation and beam bearing force state in the returner soft landing process; and the returner comprises a returner front end, a returner side wall, a returner large bottom, a returner large bottom reinforcing beam and a returner beam.

Description

technical field [0001] The invention relates to a parametric simulation method for soft landing dynamics of a return vehicle, and belongs to the technical field of deep space exploration. Background technique [0002] At present, the core of my country's lunar exploration project is manned lunar exploration and ensuring the safe return of astronauts. In order to ensure the safety of the equipment and personnel carried on the returner, make the manned returner return to the earth's surface smoothly and smoothly, and prevent the returner from overloading or dumping, it is necessary to conduct strict dynamic analysis and research on the landing process of the returner. [0003] Scholars from all over the world have carried out various researches on the landing impact of cabins. The research methods mainly include improved trial production tests, empirical theory methods, and finite element simulation calculation methods. A large number of experiments can usually obtain more re...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 刘莉陈昭岳陈树霖周思达
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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