欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
Truss Spar平台在风、浪、流的作用下，结构受力十分复杂，准确分析其疲劳强度相当困难。通过建立Truss Spar平台三维有限元模型，利用HydroD软件进行载荷预报、波浪搜索，得到产生最大应力幅响应的最不利浪向和相位角。运用Truss 软件进行整体有限元分析，得到的结果作为桁架管节点细化模型的边界条件，再用Nastran软件进行局部分析求得节点的热点应力，修正壁厚影响。最后根据DNV规范的S—N曲线计算了管节点的疲劳寿命。
英文摘要：
It h very difficult to accurately analyze structure fatigue strength of a tress spar platform because of the complex loads generated by constant wind, wave and current actions. A good method is provided to predict the load and calculate the fatigue strength of tubular joints. Three - dimension finite element model of the truss spar platform is introduced in HydroD to search the most serious sea- state where structure stress response amplitude reaches the maximum. Then the FEM calculation is carried out in Sestra to obtain the boundary condition＇ s data robe used in calculating detailed tubular joint＇s model, and with the help of Nastran, hot spot stress can be gained. Finally, according to S- N curves in DNV rules, the life of tubular joints can be predicted after refining the previous hot spot stress.
同期刊论文项目
同项目期刊论文
期刊信息
位置：