几何参数对TY-TY型管节点疲劳性能影响研究  

Research on Influence of Geometric Parameters on Behavior of Tubular TY-TY Joints

作　　者：唐文献[1] 赵海洋[1] 张建[1] 

机构地区：[1]江苏科技大学,江苏镇江202013

出　　处：《机械制造与自动化》2016年第1期67-70,共4页Machine Building & Automation

基　　金：国家自然科学基金项目(51005108);江苏省"六大人才高峰"项目(2011A031);江苏省高校自然科学研究面上项目(12KJB430006);江苏省普通高校研究生科研创新计划项目(CXZZ12_0666)

摘　　要：海洋平台中焊接管节点的疲劳寿命主要受到热点应力值的大小影响。热点应力值的大小决定了管节点在疲劳失效前所能承受的最大循环载荷次数。通过数值模拟该管节点在轴向作用下的应力分布情况,采用多因素正交试验的方法开展管节点的循环试验,考察α、β、γ、θ、τ等参数对其热点应力值影响敏感性。结果表明,参数α对TY-TY管节点处热点应力影响最大,γ、β和τ次之,θ影响最小。试验结果对于TY-TY型管节点的设计具有一定的参考价值。The fatigue life of welded tubular joints in offshore platform is mainly affected by the hot spot stress. Its value can be used to determines the cyclic times of the tubular joints under the maximal load. Therefore, this paper researchas on the axial stress distribution of the tubular joints based on the numerical simulation. Then the method of multi-factor orthogonal experiment is used to do the tube node cycling test in order to inspection the sensitivity of the influence of a,β, y, θ, τ and other important parameters on the hot spot stress value. The results show that parameter a has the greatest influence on the hot spot stress of the tubular TY-TY joints, then y,β and β do, and O has the least. The test results are of a certain reference value for designing the tubular TY-TY joints.

关 键 词：自升式平台 管节点 正交试验 疲劳性能 几何参数 

分 类 号：P752[天文地球—海洋科学] U674.28[交通运输工程—船舶及航道工程]