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Residual stress & structural deformation in welded stiffened cylindrical pressure hull: Phase transformation-induced mechanisms

文献类型：期刊论文

作者He, Jiawei1; Zhang, Peng1; Xiang, Yujie1; Sun CQ(孙成奇)2; Tang, Keke1
刊名OCEAN ENGINEERING
出版日期2025-12-01
卷号341页码:15
关键词Stiffened cylindrical pressure hull Welding Phase transformation Residual stress Structural deformation
ISSN号0029-8018
DOI10.1016/j.oceaneng.2025.122517
通讯作者Tang, Keke(kktang@tongji.edu.cn)
英文摘要With marine equipment operating in progressively deeper and more extreme ocean environments, phase transformation-induced welding defects in pressure hull structures have emerged as a critical reliability challenge. To address this, a multiscale thermo-metallurgical-mechanical (TMM) coupled framework is proposed to quantitatively characterize phase transformation effects on weld integrity, and a control strategy for welding stiffened cylindrical pressure hulls is established. The framework elucidates the tripartite interactions between microstructural evolution kinetics, hull-specific structural constraints, and process-induced thermo-mechanical loads governing weld performance. Specimen-scale validation and structural-scale parametric analysis were sequentially conducted to verify the framework's simulation capability. The TMM coupled model demonstrated high computational accuracy, with quantitative evaluation of stiffener geometry and welding parameter interactions on three critical outputs: residual stress distribution, structural deformation patterns, and phase transformation characteristics. The simulated longitudinal and transverse residual stresses exhibited 96.8 % and 98.4 % agreement with X-ray diffraction measurements, respectively. Stiffener geometry analysis confirms web thickness and height independently control residual stress and structural deformation characteristics. Within the optimal heat input window (0.4-0.6 kJ center dot mm-1), welding speed governs the geometric variations of the weld pool. Collectively, the established methodology delivers practical solutions for enhancing weld consistency in industrial manufacturing of deep-sea structures.
分类号一类
WOS关键词TI-6AL-4V ALLOY ; HEAT INPUT ; PREDICTION
资助项目National Natural Science Foundation of China[11872278] ; Natural Science Foundation of Shanghai[25ZR1401355] ; Fundamental Research Funds for the Central Universities
WOS研究方向Engineering ; Oceanography
语种英语
WOS记录号WOS:001562164900002
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Shanghai ; Fundamental Research Funds for the Central Universities
其他责任者Tang, Keke
源URL[http://dspace.imech.ac.cn/handle/311007/103692]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China;
2.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 He, Jiawei,Zhang, Peng,Xiang, Yujie,et al. Residual stress & structural deformation in welded stiffened cylindrical pressure hull: Phase transformation-induced mechanisms[J]. OCEAN ENGINEERING,2025,341:15.
APA He, Jiawei,Zhang, Peng,Xiang, Yujie,孙成奇,&Tang, Keke.(2025).Residual stress & structural deformation in welded stiffened cylindrical pressure hull: Phase transformation-induced mechanisms.OCEAN ENGINEERING,341,15.
MLA He, Jiawei,et al."Residual stress & structural deformation in welded stiffened cylindrical pressure hull: Phase transformation-induced mechanisms".OCEAN ENGINEERING 341(2025):15.

入库方式： OAI收割

来源：力学研究所

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