Welding distortion prediction with elastic FE analysis and mitigation practice in fabrication of cantilever beam component of jack-up drilling rig

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• 作者：Jiangchao Wang^a ; ^{WangJiangchaocn@gmail.com} ; Hongquan Zhao^b ; Jiasheng Zou^b ; Hong Zhou^c ; Zhengfeng Wu^d ; Shizhong Du^d
• 关键词：Welding distortion prediction ; Accurate fabrication ; Elastic FE analysis ; I section welded structure ; Cantilever beam structure
• 刊名：Ocean Engineering
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：130
• 期：Complete
• 页码：25-39
• 全文大小：2980 K
• 卷排序：130

文摘

Welding distortion prediction and mitigation of offshore structure component with elastic FE analysis is demonstrated. Bending distortions of thick plate welded joints have less magnitude due to the symmetrical welding. In-plane shrinkages of welded joints have a dominant contribution to the welding distortion of whole welded structure. Welding sequence influences not only the welding distortion, but also the production schedule and cost. Constraint techniques have a decisive effect on the achievement of entire welding process, and can reduce bending distortion.