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Study on Line-heating Techniques for Bow and Stem Outer Plates

Author: WangZhongQiang
Tutor: LiuYuJun；DengYanPing
School: Dalian University of Technology
Course: Design and manufacture of ships and marine structures
Keywords: Fore and aft outer plate Fire and water processing Impact parameter Deformation law
CLC: U671.3
Type: Master's thesis
Year: 2008
Downloads: 71
Quote: 0
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Abstract


Most of the hull complex curved outer plate is constituted by the three-dimensional incompressible developable surface , a flat steel plate into the curved shape of the hull molding requirements needed to achieve its fire and water processing . Water and fire on the ship hull plate processing automation is mainly concentrated in the large curved steel plate with smaller deflection . Midship most of the outer plate and near the fore and aft section . Such outer plate small deflection , larger the heating line spacing arranged often , in the study by taking appropriate simplified , ignoring some secondary factor to meet the engineering precision to engineering applications level results. hull fore and aft outer plate with large deflection , and a smaller area , plus hot layout characteristics close or even cross impact considerations and analysis of the deformation law will be more complex , more difficult to study them . In this paper, the the hull bow the stern outer plate hydrothermal processing process as the research object , the use of finite element simulation and experimental method of combining three-dimensional transient numerical simulation of line heating process . For plus hotline in the fore and aft of the hull outside board fire and water processing to board edge distance , the heating line spacing , as well as steel plate transverse radius of curvature of three important deformation impact parameters on deformation law launched a study , and then select the typically solid SHIP experiments to verify the reliability of the finite element calculated regularly . Calculated by the finite element simulation , we have come to the influence of the three important parameters on deformation values ??calculated . The numerical the real Ship experimental law of finite element simulation calculation regularity good agreement . Investigated to obtain , hull fore and aft the outer plate hydrothermal molding process parameters to optimize the design of important guiding significance .

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CLC: > Transportation > Waterway transport > Marine Engineering > Ship construction process > Processing of forging, casting and pressure molding process
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