大型薄壁游船结构激光弧焊复合变形分析

IF 2.4 3区 工程技术 Q3 ENGINEERING, MANUFACTURING
Liangfeng Li, Yansong Zhang
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引用次数: 0

摘要

近年来,在游轮建造中越来越多地使用板厚为6mm-10mm的薄壁结构。激光-电弧焊作为游轮建造的重要工艺之一,结合激光焊接和电弧焊的优点,以减少面板变形为目的,在薄壁游轮上得到越来越多的应用。然而,由于连续焊缝长度为4m-16m的薄壁结构刚度较弱,容易发生复杂的焊接变形,如屈曲变形。分析了大型薄壁游轮结构在激光弧焊复合焊接过程中随焊缝长度、结构宽度和板厚变化的变形行为。基于热弹塑性和固有应变相结合的方法,对焊接变形引起的屈曲模式进行了预测,并进行了实验验证。对比大型薄壁游轮结构的变形行为,当对接焊接时连续焊缝长度超过7.5m时,焊接变形模式由弯曲变形转变为屈曲变形。比较不同厚度结构在长度为15m时的屈曲行为,当板厚为10mm时屈曲轻微,而当板厚为6mm时,屈曲变形严重,最多可达7个半波长。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hybrid laser-arc welding-induced distortions analysis of large-scale thin-walled cruise ship structures
In recent years there has been increasing use of thin-walled structures with a plate thickness of 6mm-10mm in the construction of cruise ships. As one of the important processes of cruise ship construction, hybrid laser-arc welding, combing the advantages of laser welding and arc welding, is increasingly applied in thin-walled cruise ships with the objective of reducing panel deformation. However, due to the weak stiffness of the thin-walled structure with a continuous weld length of 4m-16m, complex welding deformation, e.g., buckling deformation will be prone to occur. This paper analyzed the deformation behavior of large-scale thin-walled cruise ship structures with the change of weld length, structural width, and plate thickness in hybrid laser-arc welding process. The buckling mode induced by the welding deformation is predicted based on the combination method of thermal elastic-plastic and inherent strain, as well as experimental verification. Comparing the deformation behavior of large thin-walled cruise ship structures, when the continuous weld length exceeds 7.5m during butt welding, the welding deformation mode transitions from bending deformation to buckling deformation. Comparing the buckling behavior of structures with different thicknesses at a length of 15m, a slight buckling occurs with a plate thickness of 10mm, but reducing the plate thickness to 6mm leads to severe buckling deformation with up to 7 half-wavelengths.
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来源期刊
CiteScore
6.80
自引率
20.00%
发文量
126
审稿时长
12 months
期刊介绍: Areas of interest including, but not limited to: Additive manufacturing; Advanced materials and processing; Assembly; Biomedical manufacturing; Bulk deformation processes (e.g., extrusion, forging, wire drawing, etc.); CAD/CAM/CAE; Computer-integrated manufacturing; Control and automation; Cyber-physical systems in manufacturing; Data science-enhanced manufacturing; Design for manufacturing; Electrical and electrochemical machining; Grinding and abrasive processes; Injection molding and other polymer fabrication processes; Inspection and quality control; Laser processes; Machine tool dynamics; Machining processes; Materials handling; Metrology; Micro- and nano-machining and processing; Modeling and simulation; Nontraditional manufacturing processes; Plant engineering and maintenance; Powder processing; Precision and ultra-precision machining; Process engineering; Process planning; Production systems optimization; Rapid prototyping and solid freeform fabrication; Robotics and flexible tooling; Sensing, monitoring, and diagnostics; Sheet and tube metal forming; Sustainable manufacturing; Tribology in manufacturing; Welding and joining
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