| CFRP层合板雷击烧蚀损伤模拟的电流加载方式分析 |
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| 引用本文： | 贾宝惠,刘旭宇,卢翔,单泽众.CFRP层合板雷击烧蚀损伤模拟的电流加载方式分析[J].航空工程进展,2023,14(3):108-117. |
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| 作者姓名： | 贾宝惠 刘旭宇 卢翔 单泽众 |
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| 作者单位： | 中国民航大学,中国民航大学,中国民航大学,中国民航大学 |
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| 摘 要： | 通过改进加载方式减小数值模拟与试验结果误差对于提高仿真准确性具有一定意义。本文探究复合材料层合板在不同形式雷击电流下的烧蚀损伤特性，改进Braginskii 电弧半径扩展公式，建立适用于雷击过程的电弧扩展半径数值模型；基于ABAQUS 建立CFRP 层合板有限元模型，分析不同电流加载方式下的烧蚀损伤情况。结果表明：建立的有限元模型能够模拟CFRP 层合板雷击烧蚀损伤；扩展移动加载造成的损伤面积、损伤深度和损伤体积与试验结果对比误差均约为7%，较其他加载方式仿真结果与试验结果对比具有良好的一致性，模拟复合材料雷击烧蚀损伤时应同时考虑电流扩展和移动的影响。
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| 关 键 词： | 复合材料 雷击 烧蚀损伤 有限元模型 电流加载方式 |
| 收稿时间： | 2022/7/4 0:00:00 |
| 修稿时间： | 2022/10/10 0:00:00 |
Analysis of Current Loading Mode for Lightning Ablation Damage Simulation of CFRP Laminates |
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| jiabaohui,liuxuyu,luxiang and shanzezhong.Analysis of Current Loading Mode for Lightning Ablation Damage Simulation of CFRP Laminates[J].Advances in Aeronautical Science and Engineering,2023,14(3):108-117. |
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| Authors: | jiabaohui liuxuyu luxiang and shanzezhong |
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| Affiliation: | Civil Aviation University of China,Civil Aviation University of China,, |
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| Abstract: | It is significant to improve the simulation accuracy by improving the loading method to reduce the error between the numerical simulation and the test results. The ablation damage characteristics of composite laminates under different forms of lightning current were explored, the Braginskii arc radius expansion formula was improved, and a numerical model of arc expansion radius suitable for lightning strike process was established. A finite element model of CFRP laminate was established based on ABAQUS and the ablation damage under different current loading modes was analyzed. The results show that the finite element model can simulate the lightning strike ablation damage of CFRP laminates. Compared with other loading methods, the damage area, damage depth and damage volume caused by extended moving loading are in good agreement with the test results. The effects of current expanding and movement should be taken into account when simulating lightning strike ablation damage of composite materials.
Keywords: composite; lightning strike; ablation damage; finite element model; current loading method |
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| Keywords: | composite lightning strike ablation damage finite element model current loading method |
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