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论文:2022,Vol:40,Issue(6):1204-1211 |
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引用本文： |
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谢伟, 张亚丹, 马泽华, 冯金蓉, 吴堉. 基于分枝-约界法的典型五孔结构主要失效模式研究[J]. 西北工业大学学报 |
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XIE Wei, ZHANG Yadan, MA Zehua, FENG Jinrong, WU Yu. Study on main failure modes of multiple-holes structures based on branch-bound method[J]. Journal of Northwestern Polytechnical University |
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| 基于分枝-约界法的典型五孔结构主要失效模式研究 |
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| 谢伟1, 张亚丹1,2, 马泽华1,3, 冯金蓉1, 吴堉1 |
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1. 西北工业大学 航空学院, 陕西 西安 710072;
2. 成都飞机工业(集团)有限公司, 四川 成都 610092;
3. 北京航天动力研究所, 北京 100076 |
| 摘要: |
| 针对飞机蒙皮上典型的五孔结构,结合多裂纹结构失效判据,考虑影响多裂纹结构剩余寿命分布的随机因素,将分枝-约界算法应用于典型五孔结构主要失效模式筛选工作,并给出具体的筛选步骤。通过Franc3D裂纹扩展软件预测结构剩余寿命,建立寿命干涉模型,最终形成五孔结构的剩余寿命分布曲线,完成其主要失效模式的筛选。结果表明:利用该算法对结构主要失效模式的筛选与简单的穷举法相比计算量减少了77.2%,对应中值寿命与筛选前误差在12%左右,表明该算法筛选结构主要失效模式结果较为准确;与已有的试验结果相比,用该寿命分布预测的中值寿命较为保守,具有一定的可靠性和准确性。该方法对于此结构安全寿命的评估具有一定的借鉴意义。 |
| 关键词:
五孔结构
分枝-约界算法
寿命干涉模型
可靠性指标
主要失效模式
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| Study on main failure modes of multiple-holes structures based on branch-bound method |
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| XIE Wei1, ZHANG Yadan1,2, MA Zehua1,3, FENG Jinrong1, WU Yu1 |
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1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. Chengdu Aircraft Industrial(Group) Co., Ltd, Chengdu 610092, China;
3. Beijing Aerospace Propulsion Institute, Beijing 100076, China |
| Abstract: |
| Aiming at the typical five-hole structure on the aircraft skin, combined with the failure criterion of multi crack structure and considering the random factors affecting the residual life distribution of multiple crack structure, this paper applies the branch and bound algorithm to the screening of the main failure modes of typical five-hole structure, and gives the specific screening steps. The residual life of the structure is predicted by Franc3D crack propagation software, and the life interference model is established. Finally, the residual life distribution curve of the five-hole structure is formed to complete the screening of its main failure modes. The results show that the efficiency of using the algorithm to screen the main failure modes of the structure has been improved by 77.2%, and the error between the corresponding median life and that before screening is about 12%, indicating that the result of screening the main failure modes of the structure by the algorithm is more accurate. Compared with the existing test results, the median life predicted by the life distribution is more conservative and has certain reliability and accuracy. This method has certain reference significance for the evaluation of the safe life of this multi-holes structure. |
| Key words:
five hole structure
branch-reduction algorithm
life interference model
reliability index
main failure mode
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| 收稿日期: 2022-04-06
修回日期:
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| DOI: 10.1051/jnwpu/20224061204 |
| 基金项目: 国家自然科学基金(11672238)与陕西省自然科学基础研究计划(2020JZ-06)资助 |
| 通讯作者: 张亚丹(1995—),西北工业大学硕士研究生,主要从事材料/结构疲劳断裂与可靠性分析研究。 e-mail:2995875597@qq.com
Email：2995875597@qq.com |
| 作者简介: 谢伟(1978—),西北工业大学副教授,主要从事计算固体力学、材料/结构疲劳断裂与可靠性分析研究
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| 作者相关文章 |
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| 谢伟 在本刊中的所有文章 |
| 张亚丹 在本刊中的所有文章 |
| 马泽华 在本刊中的所有文章 |
| 冯金蓉 在本刊中的所有文章 |
| 吴堉 在本刊中的所有文章 |
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