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论文:2017,Vol:35,Issue(5):905-909 |
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引用本文： |
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苟文选, 张芮晨, 耿小亮, 高宗战, 何新党. 一种先进的飞机吊挂结构疲劳寿命仿真分析方法[J]. 西北工业大学学报 |
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Gou Wenxuan, Zhang Ruichen, Geng Xiaoliang, Gao Zongzhan, He Xindang. An Advanced Fatigue Life Simulation Method for Aircraft Suspension Structures[J]. Northwestern polytechnical university |
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| 一种先进的飞机吊挂结构疲劳寿命仿真分析方法 |
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| 苟文选, 张芮晨, 耿小亮, 高宗战, 何新党 |
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| 西北工业大学 力学与土木建筑学院, 陕西 西安 710129 |
| 摘要: |
| 常规的有限元疲劳寿命仿真分析采用连续函数作为形状函数，在处理位移不连续问题时，需将裂尖附近网格进行高密处理和重新剖分来进行裂纹扩展模拟，导致求解规模大，计算效率低。采用扩展有限元法和虚拟裂纹闭合技术，以吊挂结构为研究对象，通过建立局部模型，对疲劳裂纹扩展寿命进行分析计算，使得计算效率提高，且计算结果与试验结果相比，误差仅为8.2%，从而证明了该方法的有效性。 |
| 关键词:
疲劳裂纹扩展
扩展有限元
虚拟裂纹闭合技术
仿真分析
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| An Advanced Fatigue Life Simulation Method for Aircraft Suspension Structures |
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| Gou Wenxuan, Zhang Ruichen, Geng Xiaoliang, Gao Zongzhan, He Xindang |
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| School of Mechanics and Civil & Architecture, Northwestern Polytechnical University, Xi'an 710129, China |
| Abstract: |
| The conventional finite element simulation of the fatigue life analysis using continuous function as shape function, In dealing with the problem of displacement discontinuity, It is necessary to carry out crack propagation simulation by high density meshing and re-segmentation in the vicinity of the crack tip, which leads to large scale and low computational efficiency. In this paper,based on the hanging structure, through the establishment of local model, the extended finite element method and the virtual crack closure technique are used to simulate the fatigue crack propagation life, improving computational efficiency, the calculation results compared with the experimental results, error was only 8.2%, proving the effectiveness of the proposed method. |
| Key words:
ABAQUS
computational efficiency
crack tips
design of experiments
fatigue crack propagation
mesh generation
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| 收稿日期: 2017-03-01
修回日期:
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| DOI: |
| 通讯作者:
Email： |
| 作者简介: 苟文选(1953-),西北工业大学教授、博士生导师,主要从事材料力学行为及实验方法研究。
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参考文献: |
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