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A high-efficiency simulation evaluation method and system for the anti-stone impact performance of automobile coatings

A simulation evaluation and anti-stone impact technology, applied in design optimization/simulation, sustainable transportation, special data processing applications, etc., can solve problems such as poor repeatability of experimental methods, and achieve the effect of avoiding poor experiment repeatability and solving huge simulation scale.

Active Publication Date: 2022-05-31
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This high-efficiency simulation evaluation method for the anti-stone chip performance of automotive coatings not only eliminates the defect of poor repeatability of the experimental method, but also solves the difficulties faced by the simulation method of the whole process of the standard experiment, and provides a basis for the evaluation of the anti-stone chip performance of automotive coatings. A feasible numerical method, the specific technical scheme is as follows

Method used

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  • A high-efficiency simulation evaluation method and system for the anti-stone impact performance of automobile coatings
  • A high-efficiency simulation evaluation method and system for the anti-stone impact performance of automobile coatings
  • A high-efficiency simulation evaluation method and system for the anti-stone impact performance of automobile coatings

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Embodiment 1

[0037] as Figure 1As shown, the present embodiment provides a high efficiency simulation evaluation method for the anti-stone impact performance of the automobile coating, in the present embodiment, the steel ball particles impact the automotive coating sample, in the multi-particle impact working condition, the automotive coating sample is impacted by 10 steel ball particles, such as Figure 2 as shown. Among them, the automotive coating sample size is 100mm×200mm×1mm, the diameter of the steel ball particles is 5mm, and the impact speed and impact angle of each steel ball particle can be calculated by the simulation of fluid and particle coupling. Fluid and particle coupling simulation for the previous research results, the simulation process is not described here, multi-particle impact working conditions of each steel ball particle impact velocity and impact angle in the present embodiment as a known quantity, as shown in Table 1 automotive coating multi-particle impact working ...

Embodiment 2

[0059] as Figure 6 As shown in the present embodiment, there is provided a schematic diagram of an efficient simulation evaluation system structure of an automotive coating resistance to stone impact, comprising, the first building block, the output module, the second building block and the evaluation module;

[0060] Specifically, the first building block, output module, the second building module and the evaluation module are connected in turn, the first building module is used to construct a single particle impact failure finite element analysis model, the single particle impact failure finite element analysis model is used for simulation experiments on the impact of single particle impact of automotive coating samples; the output module is used to obtain multiple groups of single particle impact velocity and impact angle, based on simulation experiments, output multiple groups of single particle impact failure area; the second building module is used to use multiple groups of ...

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Abstract

The invention discloses a high-efficiency simulation evaluation method and system for the anti-stone impact performance of automobile coatings. The method includes: obtaining a single-particle impact damage finite element analysis model for performing simulation experiments on single-particle impact of automobile coating samples; obtaining multiple groups Single-particle impact velocity and impact angle, based on simulation experiments, output multiple groups of single-particle impact damage areas; multiple groups of single-particle impact damage areas are used as discrete data points to construct a three-dimensional surface model for calculating the impact of each particle in multi-particle impact conditions Impact damage area: Based on the impact damage area of ​​each particle, the high-efficiency simulation evaluation of the stone chip resistance performance of automotive coatings is completed. The invention uses a high-efficiency numerical method to evaluate the damage area of ​​the automobile coating in the standard experiment, which not only eliminates the defect of poor repeatability of the experimental method, but also solves the problem of low calculation efficiency of the simulation method, and provides a tool for evaluating the stone chipping resistance of automobile coatings. a feasible numerical method.

Description

Technical field [0001] The present invention belongs to the field of automotive coating stone impact resistance evaluation technology, in particular to a kind of automotive coating stone impact resistance high efficiency simulation evaluation method and system. Background [0002] The car will splash the gravel on the road surface during the driving process, and the splashing rubble hitting the surface of the car coating will lead to the surface of the body rust, affecting the beauty of the vehicle, causing the corrosion of the chassis and other parts to increase the corrosion, the safety performance of the car is reduced, etc., therefore, the analysis of the stone damage phenomenon of the coating, the study of the stone strike failure mechanism of the coating, and the evaluation of the coating's resistance to stone strike are of great research significance. [0003] In terms of experimental research in this field, the two standards commonly used in the test of stone strike resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23
CPCG06F30/23Y02T90/00
Inventor 臧孟炎邹晨祺陈力
Owner SOUTH CHINA UNIV OF TECH