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Analysis Method of Landing Mechanics Environment Based on Retractor Components

A technology of mechanical environment and analysis method, applied in the field of deep space exploration, can solve the problem of not being able to truly respond to the impact response of the payload of the returner, and achieve the effect of saving design costs

Active Publication Date: 2017-03-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the impact response of the payload of the returner cannot be truly reflected, and propose a method for analyzing the landing mechanics environment based on the returner assembly, which is suitable for the design stage of the returner scheme

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  • Analysis Method of Landing Mechanics Environment Based on Retractor Components
  • Analysis Method of Landing Mechanics Environment Based on Retractor Components
  • Analysis Method of Landing Mechanics Environment Based on Retractor Components

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Embodiment Construction

[0031] A method for analyzing the environment of landing mechanics based on returner components, such as figure 1 As shown, the specific steps are as follows:

[0032] Step 1: Divide components according to the predicted requirements of the mechanical environment. The return device is divided into the front end of the return device 1, the side wall of the return device 2, the large beam of the return device 3, the bottom of the return device 4, and the reinforcement beam 5 of the large bottom of the return device, such as figure 2 shown.

[0033] The returner carries a variety of payloads, and the model is very complex, involving a variety of geometric dimensions. The present invention first simplifies the physical model of the returner and divides it into components according to the predicted requirements of the mechanical environment: the fundamental purpose of the soft landing dynamic response analysis of the returner is to obtain the mechanical environment of the payloa...

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Abstract

The invention relates to a landing mechanical environment analysis method based on a returner component, belonging to the technical field of deep space exploration. The landing mechanical environment analysis method based on the returner component comprises the following steps: firstly constructing a non-linear finite element model for soft landing of a returner, then carrying out non-linear finite element solution on the model to obtain the dynamic response of the returner structure; after obtaining the acceleration response of the concerned position, calculating the shock spectrum of the acceleration response of the structure by adopting a recursive digital filtering method to be used for describing the mechanical environment of landing impact of the returner; and finally obtaining the maximum expectation environment by adopting a spectrum enveloping method to be used for formulating the design and test conditions of equipment. The method can be used for quickly carrying out enveloping analysis on impact response spectrum of different working conditions aiming at different simulation working conditions so as to obtain an enveloped impact response spectrum, and the enveloping curve can truly reflect the more harsh condition in the effective load impact response of the returner and can be further optimized accordingly.

Description

technical field [0001] The invention relates to a landing mechanical environment analysis method based on a returner assembly, and belongs to the technical field of deep space exploration. Background technique [0002] The landing of the return capsule on the earth is the final stage of the manned space mission. Whether the return capsule can land safely is an important criterion for the success or failure of the space mission. The landing of the return capsule on the earth is a harsh impact process. During this process, a large impact load will be generated on the astronauts and the equipment and instruments in the cabin. In order to ensure its safe landing, it needs to be analyzed and studied in the initial development and design stage. The safe landing of the reentry module is an important research topic in manned space missions, and all space powers have done a lot of research on this topic when carrying out manned space missions. From the experimental verification meth...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 周思达刘莉陈昭岳陈树霖
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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