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Composite material lightning stroke damage simulation method and device

A composite material and damage simulation technology, applied in computer material science, 3D modeling, image data processing, etc., can solve the problem of lack of lightning strike simulation

Active Publication Date: 2019-07-23
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of the embodiments of the present invention is to provide a lightning strike damage simulation method and device for composite materials, which solves the current lack of lightning strike simulation and simulation, and can be used to simulate the changes in the material properties of composite materials after lightning strikes, avoiding the Real lightning strike test, reducing cost and test cycle

Method used

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  • Composite material lightning stroke damage simulation method and device
  • Composite material lightning stroke damage simulation method and device
  • Composite material lightning stroke damage simulation method and device

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Experimental program
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Effect test

Embodiment approach

[0085] As an optional implementation manner, the boundary conditions include any one or more of the following:

[0086] Concentrated current, electric potential, displacement control, initial temperature, heat exchange coefficient and radiation coefficient of the composite material.

[0087] As an optional implementation, the method is applied in the software ABAQUS.

[0088] As an optional implementation manner, the calculation module 604 is specifically configured to:

[0089] According to the performance parameters, design a user subroutine for calculating the degree of pyrolysis, wherein the degree of pyrolysis represents the degree of performance attenuation of the composite material; according to the geometric model containing the three-dimensional grid, the performance parameters and A simulation model is obtained for the boundary conditions; and a simulation calculation is performed according to the simulation model and the user subroutine to obtain the simulation res...

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Abstract

Embodiments of the invention provide a composite material lightning stroke damage simulation method and device. The composite material lightning stroke damage simulation method includes the steps: establishing a two-dimensional geometric model of composite material, and meshing the geometric model to obtain a geometric model including two-dimensional meshes; offsetting the two-dimensional meshes to obtain a geometric model including three-dimensional meshes; setting for performance parameters and boundary conditions related to coupling of thermal-electrical-structure for the composite material; and obtaining a simulation result characterizing performance change of the composite material according to the geometric model including the three-dimensional meshes, the performance parameters andthe boundary conditions. The composite material lightning stroke damage simulation method and device can solve the problem of lack of lightning stroke simulation, and can be used to simulate the change of material performance of the composite material after lightning strike, thus avoiding the real lightning stroke test, and reducing the cost and the test cycle.

Description

technical field [0001] The invention relates to the technical field of material testing, in particular to a method and device for simulating lightning strike damage to composite materials. Background technique [0002] The application of aviation composite materials has greatly improved the overall performance of the aircraft, including strength performance, fatigue performance, etc., and while the performance has been improved, the aircraft has also been lightened, reducing energy consumption and flight costs. However, damage to the interior or surface of composite materials can easily lead to a great degradation of the structural strength and stiffness of the material. Lightning strike is one of the main causes of damage. When a strong current hits the composite material after the lightning strike, the heat temperature rises sharply in a short period of time, causing the local strength of the material to degrade, or even burn through and break down. [0003] At present, i...

Claims

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Application Information

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IPC IPC(8): G16C60/00G16C20/80G06T17/20
CPCG06T17/20G16C20/80G16C60/00
Inventor 韩龙帅郑学斌王宝川杨建炜姚野金磊李亚东李少博李春光胡开广张伟
Owner SHOUGANG CORPORATION
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