变尺度网格法在典型焊接节点应力集中系数计算中的应用  

Application of Variable Scale Meshing Method in Calculation of Stress Concentration Factor of Typical Welding Joint

作　　者：张兴刚 窦培林[1] 景宝金[2] 许溢洋 ZHANG Xinggang;DOU Peilin;JING Baojin;XU Yiyang(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China;Marine Design and Research Institute of China,Shanghai 200011,China;Shanghai Ship Design and Research Institute,Shanghai 201203,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]中国船舶及海洋工程设计研究院,上海200011 [3]上海船舶设计研究院,上海201203

出　　处：《中国海洋平台》2019年第6期90-93,共4页China offshore Platform

摘　　要：以第七代半潜式海洋平台设计制造为工程背景,为应对非连续变形结构分析中出现的计算精度和计算时间问题,探究变尺度网格法在计算应力集中系数(Stress Concentration Factor,SCF)中应用的优越性。针对半潜式海洋平台,采用体单元建立下浮体与立柱十字相交节点的有限元模型,对比计算结果的稳定性和精确度,得到以十字焊接节点体单元模型计算SCF的分析中模型可适用的变尺度网格划分的具体方法。Taken the design and manufacture of the seventh generation semi submersible offshore platform as the engineering background,in order to cope with the calculation accuracy and calculation time problems in the analysis of discontinuous deformation structures,the superiority of the application of the variable scale meshing method in calculating the stress concentration factor(SCF)is explored.For the semi submersible offshore platform,a finite element model of the intersection joint of the floating body and the column is established by the body element.Comparing the stability and accuracy of the calculation results,the specific method of variable scale meshing applicable to the model is obtained in the analysis of the SCF calculation of the cross welding joint body element model.

关 键 词：变尺度网格划分 应力集中系数 体单元 十字焊接 

分 类 号：U671.8[交通运输工程—船舶及航道工程]