[1]秦力一,许德刚,周爱民..空间网架焊接空心球节点承载力研究[J].郑州大学学报(工学版),2006,27(03):25-29.[doi:10.3969/j.issn.1671-6833.2006.03.006]
　Qin Liyi,Xu Degang,Zhou Aimin.Study on bearing capacity of hollow ball nodes welded in space grid[J].Journal of Zhengzhou University (Engineering Science),2006,27(03):25-29.[doi:10.3969/j.issn.1671-6833.2006.03.006]
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空间网架焊接空心球节点承载力研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
27
期数:
2006年03期
页码:
25-29
栏目:
出版日期:
1900-01-01

文章信息/Info

Title:

Study on bearing capacity of hollow ball nodes welded in space grid
作者:
秦力一; 许德刚; 周爱民.
郑州大学工程力学系,郑州,450002, 郑州大学工程力学系,郑州,450002, 郑州大学工程力学系,郑州,450002
Author(s):
Qin Liyi; Xu Degang; Zhou Aimin
关键词:
焊接空心球;  有限元分析;  承载力;  破坏机理
Keywords:
DOI:
10.3969/j.issn.1671-6833.2006.03.006
文献标志码:
A
摘要:
对焊接空心球节点,采用ANSYS9.0程序进行了承载力的模拟分析计算,获得了球节点受拉压时壳面弹塑性应力和变形分布规律,定出了破坏带区域在球壳中的确切位置.根据焊接空心球节点的受拉失效机理,提出了球节点塑性失效破坏的三维应力状态分析模型.进而研究了球体-焊缝-钢管一体复杂应力状态下的极限受力分析.应用极限状态计算理论得到焊接空心球节点抗拉承载力计算公式.基于空心球节点受压破坏机理的探讨和试验数据的统计分析,以若干变参数的线性回归方法,获得球节点受压承载力计算公式.数据结果表明,所得空心球节点承载力公式计算值与试验值拟合精度较好.
Abstract:
For the welded hollow ball joints, the ANSYS 9.0 program was used to simulate and calculate the bearing capacity, and the elastic-plastic stress and deformation distribution law of the shell surface when the ball nodes were tensile and compressed, and the exact position of the failure zone area in the spherical shell was determined. According to the tensile failure mechanism of welded hollow ball joints, a three-dimensional stress state analysis model of plastic failure failure of ball joints is proposed. Furthermore, the ultimate force analysis under the complex stress state of sphere-weld-steel pipe was studied. The limit state calculation theory is applied to obtain the calculation formula of the tensile bearing capacity of welded hollow ball joints. Based on the discussion of the compression failure mechanism of hollow ball nodes and the statistical analysis of experimental data, the calculation formula of the compressive bearing capacity of ball nodes is obtained by linear regression method with several variable parameters. The data results show that the calculated value of the obtained hollow ball node bearing capacity formula and the experimental value are well fitted.

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更新日期/Last Update: 1900-01-01