| 承受平衡轴力的空间KK管节点应力集中系数研究 |
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| 引用本文： | 胡维东,邵永波,杜之富.承受平衡轴力的空间KK管节点应力集中系数研究[J].工程力学,2007,24(9):19-25,64. |
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| 作者姓名： | 胡维东 邵永波 杜之富 |
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| 作者单位： | 烟台大学土木工程学院,烟台,264005 |
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| 基金项目： | 山东省教育厅资助项目
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教育部留学回国人员科研启动基金 |
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| 摘 要： | 采用有限元法分析了空间KK型管节点在承受平衡轴力作用下的应力集中系数。在有限元分析中,首先采用分区网格法产生KK节点的有限元网格,这种方法可以针对不同应力梯度的区域形成不同质量和精度的网格。然后在分区网格法的基础上,采用ABAQUS(2000)通用软件分析计算了KK型管节点在平衡轴力作用下的应力集中系数的大小和分布。最后,通过对30个KK节点模型的有限元分析,研究了KK节点几何参数对其应力集中系数大小以及分布情况的影响。
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| 关 键 词： | KK型管节点 平衡轴力 应力集中系数 分区网格法 几何参数 |
| 文章编号： | 1000-4750（2007）09-0019-07 |
| 修稿时间： | 2006-01-222006-05-16 |
NUMERICAL ANALYSIS OF THE STRESS CONCENTRATION FACTOR OF MULTI-PLANAR TUBULAR KK-JOINTS UNDER BALANCED AXIAL LOADS |
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| HU Wei-dong,SHAO Yong-bo,DU Zhi-fu.NUMERICAL ANALYSIS OF THE STRESS CONCENTRATION FACTOR OF MULTI-PLANAR TUBULAR KK-JOINTS UNDER BALANCED AXIAL LOADS[J].Engineering Mechanics,2007,24(9):19-25,64. |
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| Authors: | HU Wei-dong SHAO Yong-bo DU Zhi-fu |
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| Affiliation: | School of Civil Engineering, Yantai University, Yantai 264005, China |
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| Abstract: | The stress concentration factor of multi-planar tubular KK-joints subjected to balanced axial loads is analyzed using finite element method. Firstly, sub-zone method is used to generate the finite element mesh of a tubular KK-joint. This sub-zone mesh generation method can produce mesh of different qualities and quantities in different stress gradient regions. Thereafter, the magnitude and the distribution of the stress concentration factors along the weld toe for tubular KK-joints subjected to balanced axial loads are analyzed using ABAQUS (2000) software. Finally, through the FE analysis of 30 models, the effects of geometrical parameters on the stress concentration factor values and their distribution are investigated. |
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| Keywords: | Tubular KK-joints balanced axial loads stress concentration factor sub-zone mesh generation method geometrical parameters |
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