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。
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.
出处
《工程力学》
EI
CSCD
北大核心
2007年第9期19-25,64,共8页
Engineering Mechanics
基金
山东省教育厅基金项目(J05F01)
教育部留学回国人员科研启动基金项目
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
Tubular KK-joints
balanced axial loads
stress concentration factor
sub-zone mesh generation method
geometrical parameters