轴力作用下KT型管节点的应力集中系数分析  

Analysis of Stress Concentration Factor for Tubular KT Joints under Balanced Axial Load

作　　者：王文华 张淑华[1] 端传捷 

机构地区：[1]河海大学港口海岸与近海工程学院,南京210098

出　　处：《船海工程》2017年第6期164-168,共5页Ship & Ocean Engineering

摘　　要：为研究平衡的轴向载荷作用下几何参数对KT型管节点应力集中的影响,通过ABAQUS软件建立81个不同几何参数的KT型管节点模型进行数值分析,获得不同参数对应力集中系数大小和分布的影响规律。结果与规范公式进行对比,验证了数模结果的准确性。对KT型管节点,参数γ、τ、θ对SCF数值大小的影响十分显著,参数β对SCF分布的影响最为显著;热点应力的位置并不是固定不变的,几何参数改变其位置有可能会转移。In order to study the effect of geometric parameters on the stress concentration of tubular KT joints under balanced axial load, 81 finite element model with different geometric parameters was established by ABAQUS to get the influence law of geometric parameters upon the value and distribution of stress concentration factor. The results was compared with the published equations from DNV and LR, it proved that the numerical analysis is reliable. For KT joints, the most effective parameters in changing the values of the SCF along the weld toe are y,τ,and O, while the most effective parameter in changing the shape of the SCF distribution curve along the weld toe is β; the position of the hot spot stress shifts when some geometrical parameters are changed.

关 键 词：KT型管节点 几何参数 应力集中系数 热点应力 数值分析 

分 类 号：U661.4[交通运输工程—船舶及航道工程]