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Research on deformation mitigation mechanism of marine medium plate butt-welded joint based on heating induction
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Qing-ya ZHANGa, Bai-gong WUa, Qiu-ping WANGa, Xing-yu WANGa, Zhen-rui ZHANGa, Hong ZHOUb, Ping LIUc, Jing XUa
Journal of Ship Mechanics | 2025, 29(8) : 1288 - 1298
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Journal of Ship Mechanics | 2025, 29(8): 1288-1298
• Structural Mechanics •
Research on deformation mitigation mechanism of marine medium plate butt-welded joint based on heating induction
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Qing-ya ZHANGa, Bai-gong WUa, Qiu-ping WANGa, Xing-yu WANGa, Zhen-rui ZHANGa, Hong ZHOUb, Ping LIUc, Jing XUa
Affiliations
  • a.Marine Equipment and Technology Institute, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • b.School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • c.School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
Published: 2025-08-20 doi: 10.3969/j.issn.1007-7294.2025.08.011
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The welding displacement of marine medium plate caused by welding seriously affects the structural integrity. Butt-welded joint of AH36 steel with the thickness of 14 mm was fabricated using CO2 welding process and the out-of-plane displacement was straightened using self-developed electromagnetic induction back-heating equipment. A series of experiments were conducted to measure the microstructure, mechanical performance, transverse residual stress and out-of-plane displacement. A welding-back-heating numerical simulation method was proposed, and applied to predict the heating conduction, stress, strain and out-of-plane displacement during the processes of butt welding and back heating. Based on the deformation theory, the transverse bending moment after butt welding and back heating was computed. Results show that the microstructure is mainly cementite and back heating almost has no influence on either the microstructure or mechanical performance. The peak value of transverse residual stress is mainly at the weld seam and becomes larger due to back heating. The back heating generates a larger transverse compressive plastic strain near the surface of AH36 plate, thereby obviously straightening the out-of-plane deformation through the transverse bending moment.

medium plate  /  welding displacement  /  induction heating  /  numerical simulation
Qing-ya ZHANG, Bai-gong WU, Qiu-ping WANG, Xing-yu WANG, Zhen-rui ZHANG, Hong ZHOU, Ping LIU, Jing XU. Research on deformation mitigation mechanism of marine medium plate butt-welded joint based on heating induction[J]. Journal of Ship Mechanics, 2025 , 29 (8) : 1288 -1298 . DOI: 10.3969/j.issn.1007-7294.2025.08.011
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Article Info
doi: 10.3969/j.issn.1007-7294.2025.08.011
  • Receive Date：2025-02-15
  • Online Date：2026-03-26
  • Published：2025-08-20
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  • Received：2025-02-15
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Affiliations
    a.Marine Equipment and Technology Institute, Jiangsu University of Science and Technology, Zhenjiang 212003, China
    b.School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
    c.School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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