An LS-Dyna based flying net-target collision dynamic analysis method

A dynamic analysis and target technology, applied in the field of LS-Dyna-based flying net-target collision dynamic analysis, can solve problems such as difficult to verify, difficult, and difficult to achieve in an experimental environment.

Active Publication Date: 2019-03-08
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

For the collision dynamics of flexible flying nets and rigid targets, it is difficult to study theoretically, and the experimental environment is difficult to achieve, so it is difficult to verify

Method used

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  • An LS-Dyna based flying net-target collision dynamic analysis method
  • An LS-Dyna based flying net-target collision dynamic analysis method
  • An LS-Dyna based flying net-target collision dynamic analysis method

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Experimental program
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Embodiment Construction

[0047] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0048] 1) Establish the dynamic model of flying net-target collision in LS-Dyna.

[0049] Such as figure 1 Shown is the flow chart of the flying net-target collision dynamics simulation. First, set the element type and material type. Open the LS-Dyna software, select Add element type in the preprocessor toolbar of the main menu, and set real parameters and material parameters, etc. Select the LINK167 unit as the unit type of the flying net, and select the SOLID164 unit as the unit type of the angular mass block and the target of the flying net. Set the actual parameters of the LINK167 unit such as cross-sectional area, initial elongation, etc. Set material properties such as elastic modulus, density, and Poisson's ratio for the flying net, corner mass, and target.

[0050] Establish the geometric model of flying net, corner mass and target. Such as figure ...

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Abstract

The invention relates to an LS-Dyna based flying net-target collision dynamic analysis method, which uses the nonlinear finite element analysis software ANSYS/LS-Dyna for the typical flying net-targetrigid-flexible collision dynamics analysis, and comprises the steps of establishing a flying net-target collision dynamic model in the LS-Dyna; carrying out the data processing on the calculation result of the LS-Dyna in MATLAB; analyzing the characteristics during the flying net-target collision process. Compared with the prior art, the method is simpler than the traditional theoretical analysismethod, and the flying net carried by the multi-agent can better control the multi-agent to complete the corresponding task. By the flying net-target collision dynamic model established through the ANSYS/LS-Dyna, the traditional rigid-flexible collision theory also can be verified relatively.

Description

technical field [0001] The invention belongs to the technical field of computer-aided engineering, and relates to an LS-Dyna-based fly net-target collision dynamics analysis method. Background technique [0002] The collision dynamics between flexible flying nets and rigid objects involves various fields such as aerospace, transportation, and construction. In the field of aerospace, space flying nets can be used to capture space junk such as abandoned spacecraft. The capture process is a typical collision process between flexible flying nets and rigid targets; in the field of transportation, flexible flying nets carried by The net can be used in scenarios such as the transportation of valuables at disaster sites, and the delivery of large and heavy objects by drones; in the field of construction, the flexible flying net carried by multi-agents is used for high-altitude handling and other operations. [0003] CAE (Computer Aided Technology) is widely used in the fields of st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23
Inventor 黄攀峰余航张帆孟中杰张夷斋刘正雄董刚奇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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