| 拉伸载荷作用下共面表面裂纹间应力强度因子影响系数的有限元分析 |
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| 引用本文： | 徐建刚,任克亮. 拉伸载荷作用下共面表面裂纹间应力强度因子影响系数的有限元分析[J]. 计算力学学报, 2010, 27(3): 574-576 |
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| 作者姓名： | 徐建刚 任克亮 |
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| 作者单位： | 1. 西北工业大学,力学与土木建筑学院,西安,710072
2. 宁夏大学,物理电气信息学院,银川,750021 |
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| 基金项目： | 教育部科学技术研究重点项目 |
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| 摘 要： | 采用参数化有限元方法,结合节点力法和循环迭代算法,对一有限厚矩形板表面有两个相邻共面半椭圆表面裂纹在拉伸载荷作用下进行了求解,得到了两裂纹在不同形状和相隔距离时的应力强度因子的影响系数,计算结果对含三维广布裂纹结构的剩余强度和疲劳寿命有参考意义.
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| 关 键 词： | 有限元方法 应力强度因子 裂纹影响系数 |
| 收稿时间： | 2008-09-09 |
Finite element solution of the interaction factors between coplanar surface cracks under tension loading |
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| XU Jian-gang and REN Ke-liang. Finite element solution of the interaction factors between coplanar surface cracks under tension loading[J]. Chinese Journal of Computational Mechanics, 2010, 27(3): 574-576 |
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| Authors: | XU Jian-gang and REN Ke-liang |
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| Abstract: | In order to quantitatively describe the rules affecting adjacent cracks, a rectangular plate of finite thickness under remote tensile load with two coplanar semi-elliptical surface cracks of different geometric dimensions in close vicinity is used as a model, and a parametric finite element method along with the nodal forces method and circulatory iterative algorithm are used to calculate the interaction factors .The result provides a theoretical reference to analyze the remaining stress and fatigue span of the structure with multiple surface cracks in three dimensions. |
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| Keywords: | finite element method stress intensity factors surface cracks interaction factor |
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