A Dynamic Analysis Method of Flying Net-Target Collision Based on ls-dyna

A technology for dynamic analysis and target object, applied in the field of LS-Dyna-based flying net-target collision dynamic analysis, it can solve problems such as difficulties, difficult to achieve experimental environment, and difficult to verify, and achieve high reliability. Effect

Active Publication Date: 2021-06-11
NORTHWESTERN POLYTECHNICAL UNIV
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  • 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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  • A Dynamic Analysis Method of Flying Net-Target Collision Based on ls-dyna
  • A Dynamic Analysis Method of Flying Net-Target Collision Based on ls-dyna
  • A Dynamic Analysis Method of Flying Net-Target Collision Based on ls-dyna

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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 a LS-Dyna-based flying net-target collision dynamics analysis method, which utilizes the nonlinear finite element analysis software ANSYS / LS-Dyna to perform the typical rigid-flexible collision dynamics analysis of the flying net-target, In LS-Dyna, establish the dynamic model of the flying net-target collision; in MATLAB, perform data processing on the calculation results of LS-Dyna; analyze the characteristics of the flying net-target collision process according to the processed data. Compared with the existing technology: Compared with the traditional theoretical analysis method, it is simpler, and for the flying net carried by multi-agents, it can also control the multi-agents better to complete the corresponding tasks. Through the Flynet-target collision dynamics simulation model established by ANSYS / LS-Dyna, the traditional rigid-soft collision theory can also be verified.

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 Patents(China)
IPC IPC(8): G06F30/23G06F30/15G06F119/14
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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